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Items in the subject area " Crop husbandry > Weed management"

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Number of items at this level: 630.

Submitted for peer-review but not yet accepted

Holst, Niels; Melander, Bo; Rasmussen, Ilse A. and Hansen, Preben Klarskov (2012) Cirsium arvense responses to stubble cultivation and catch crops in organic cropping systems. Annals of Applied Biology, , - . [Submitted]

Holst, Niels; Riemens, Marleen and Rasmussen, Ilse A. (2012) A physiologically-based model of Cirsium arvense and Tussilago farfara growth and control. Weed Research, , - . [Submitted]

Melander, Bo; Nørremark, Michael and Fløjgaard, Erik (2012) A new concept for the control of Elytrigia repens in organic crop production. Weed Research, , - . [Submitted]

Nkurunziza, Libère; Andreasen, Christian; Liu, Fulai and Streibig, Jens Carl (2011) Drought Tolerance and Perennial Weed Management. Weed Science. [Submitted]

Rasmussen, Ilse A. (2002) The effect of sowing strategy, row distance and mechanical weed control on weeds and yield in organic winter wheat. [Submitted]

Peer-reviewed and accepted

Ackermann, Kerstin and Saucke, Dr. Helmut (2005) Einfluss des Gemengepartners Leindotter (Camelina sativa L.) auf Beikrautbesatz, Schädlingsbefall und Ertrag in Körnererbsen. [Effect of the companion crop linseed dodder (Camelina sativa L.) on weed development, pest incidence and yield in grain peas.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

Altieri, Dr Miguel; Lovato, Dr. Paulo; Lana, Mr Marcos and Bittencourt, Mr Henrique (2008) Testing and scaling-up agroecologically based organic conservation tillage systems for family farmers in southern Brazil. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Amosse, Camille; Celette, Florian; Jeuffroy, Marie-Hélène and David, Christophe (2013) Wheat/forage legume intercropping in organic grain system: an answer to both weed and nitrogen deficiency issues. [Association relais blé/légumineuse fourragère en sytème céréalier biologique : une réponse pour le contrôle des adventices et la nutrition azotée des cultures.] Innovations Agronomiques, 32, pp. 21-33.

Araújo, Érica de Oliveira ; Santo, Catarina Lima do Espirito and Santana, Cássia Nascimento (2010) Potencial alelopático de extratos vegetais de Crotalaria juncea sobre a germinação de plantas daninhas. [Alellopathyc potential of vegetable extracts of Crotalaria juncea on germination of weed.] Revista Brasileira de Agroecologia, 5 (2), pp. 109-115.

Araújo, J.C.; Moura, E.G.; Aguiar, A.C.F. and Mendonça, V.C.M. (2007) Supressão de plantas daninhas por leguminosas anuais em sistema agroecológico na Pré-Amazônia. [Suppression of weeds by annual leguminous plants under Amazon agroecological system.] Planta Daninha, 25 (2), pp. 267-275.

Armengot, Laura; José María, Laura; Chamorro, Dr. Lourdes; Romero, Albert and Sans, Dr. F. Xavier (2008) The effect of Avena sterilis L. invasion on weed abundance and diversity in conventional and organic cereal fields in the Mediterranean region. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Arslan, Zübeyde Filiz and Uygur, F.Nezihi (2011) Domates üretiminde sorun olan yabancı otlara karşı organik tarıma uygun bazı mücadele yöntemlerinin araştırılması. [Research on some methods approprıate for organic farming on weed species in tomato cultivation.] PhD thesis, Çukurova Üniversitesi, Fen Bilimleri Enstitüsü, Bitki Koruma Anabilim Dalı. . [Unpublished]

Ascard, J.; Hatcher, P.E.; Melander, B. and Upadhyaya, M.K. (2007) Thermal Weed Control. In: Upadhyaya, M.K. and Blackshaw, R.E. (Eds.) CAB International 2007. Non-chemical Weed Management. CAB International, chapter 10, pp. 155-175.

Ascard, Johan and Fogelberg, Fredrik (2008) Mechanical In-Row Weed Control in Transplanted and Direct-Sown Bulb Onions. Biological Agriculture and Horticulture, 25, pp. 235-251.

Atanassova, D. and Koteva, V. (2005) Verunkrautung in einer ökologischen Fruchtfolge. [Weed infestation in an ecological crop rotation system.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

Ausmane , M.; Gaile, Z. and Melngalvis, I. (2008) THE INVESTIGATION OF CROP WEEDINESS IN THE CROP ROTATION OF ORGANIC FARMING SYSTEM. Latvian Journal of Agronomy, No.10, pp. 25-31.

BARBERI, PROF. P.; BIGONGIALI, DR. F.; ANTICHI, DR. D.; CARLESI, DR. S.; FONTANELLI, DR. M.; FRASCONI, DR. C. and LULLI, DR. L. (2008) Innovative crop and weed management strategies for organic spinach: crop yield and weed suppression. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Becker, Konstantin and Gengenbach, Heinz (2007) Das Anbauverfahren Weite Reihe. [The "wide row" cultivation method.] Fachinformationen - Ökologische Landwirtschaft und ökologischer Gartenbau, no. 1/2007. Landesbetrieb Landwirtschaft Hessen (LLH), DE-Kassel in Zusammenarbeit mit der Justus-Liebig-Universität Giessen (Professur für Organischen Landbau) und der Bundesanstalt für Landwirtschaft und Ernährung (BLE)..

Becker, Konstantin and Leithold, Günter (2007) Das Anbaukonzept Weite Reihe bei verschiedenen Druschkulturen unter Berücksichtung des Vorfruchtwertes. Paper at: Zwischen Tradition und Globalisierung - 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Stuttgart, Deutschland, 20.-23.03.2007.

Bilalis, Ass. Prof. D.; Konstantas, MSc A.; Efthimiadou, MSc A.; Papatheohari, Dr Y and Kakampouki, MSc I. (2008) Effect of two Oat–legumes intercrop systems on weed flora under Mediterranean conditions. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Bochtis, D.D.; Sørensen, C.G.; Jørgensen, R.N. ; Nørremark, M.; Hameed, I.A. and Swain, K.C. (2011) Robotic weed monitoring. Acta Agriculturae Scandinavica Section B. Soil and Plant Science, 61, pp. 202-208.

Böhm, Herwart (2009) Körnerleguminosen - Stand des Wissens sowie zukünftiger Forschungsbedarf aus Sicht des Ökologischen Landbaus. [Grain legumes - state of knowledge and need for future research from the view of organic farming.] Journal für Kulturpflanzen, 61 (9), pp. 324-331.

Böhm, Herwart and Verschwele, Arnd (2004) Ampfer- und Distelbekämpfung im Ökolandbau. [Control of Rumex spp. and Cirsium arvense in organic farming.] Landbauforschung Völkenrode, Sonderheft 273, pp. 39-47.

Braband, D. and van Elsen, T. (2006) Ackerwildkräuter als „ökologische Leistung“ – Entwicklung einer Methode zur Feststellung förderwürdiger, artenreicher Ackerflächen. Zeitschrift für Pflanzenkrankheiten und Pflanzenschutz, Journal of Plant Diseases and Protection, Sonderheft XX, pp. 535-546.

BRANDSÆTER, L.O.; FOGELFORS, H.; FYKSE, H.; Graglia, E.; JENSEN, R.K.; Melander, B.; Salonen, J. and Vanhala, P. (2010) Seasonal restrictions of bud growth on roots of Cirsium arvense and Sonchus arvensis and rhizomes of Elymus repens. Weed Research, 50 (2), pp. 102-109.

Brandsæter, Lars O. ; Mangerud, Kjell and Rasmussen, Jesper (2012) Interactions between pre- and post-emergence weed harrowing in spring cereals. Weed Research, 52, pp. 338-347.

Brighenti, Alexandre Magno and Brighenti, Deodoro Magno (2009) Controle de plantas daninhas em cultivos orgânicos de soja por meio de descarga elétrica. [Weed control in organic soybean using electrical discharge.] Ciência Rural, 39, pp. 2315-2319.

Bufler, Gebhard; Hübner, Oliver and Funk, Rainer (2013) Qualität und Ertrag von Öko-Zwiebeln: Vergleich von Pflanzung und Direktsaat. Poster at: 12. Wissenschaftstagung Ökologischer Landbau, Rheinische Friedrich-Wilhelms-Universität, Bonn, 5. bis 8. März 2013.

Cici, S.-Z.-H.; Kristiansen, P. and Sindel, B.M. (2005) Improving competitive ability of chickpea with sowthistle. Paper at: 15th Australian Weeds Conference Papers and Proceedings. Managing Weeds in a Changing Climate, Adelaide Convention Centre, Adelaide, South Australia, 24-28 September 2006.

Cirujeda, A.; Melander, B.; Rasmussen, K. and Rasmussen, I.A. (2003) Relationship between speed, soil movement into the cereal row and intra-row weed control efficacy by weed harrowing. Weed Research, 43 (4), pp. 285-296.

Clarke, Dr S.M.; Jones, Dr. H; Haigh, Miss Z; Boyd, Miss H and Wolfe, Prof. M.S. (2008) Effects of husked oat varieties, variety mixtures and populations on disease levels, crop cover and their resulting yields. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Corrêa, Maria Lita Padinha; Galvão, João Carlos Cardoso; Fontanetti, Anastácia; Ferreira, Lino Roberto and Miranda, Glauco Vieira (2011) Dinâmica populacional de plantas daninhas na cultura do milho em função de adubação e manejo. [Population dynamics of weeds in maize culture in relation to fertilization and management.] Revista Ciência Agronômica, 42 (2), pp. 354-363.

Crowley, Oliver; Döring, Thomas F. and Measures, Mark (2012) Using minimum tillage to improve the efficiency of ecosystem service delivery on organic farms. In: McCracken, K (Ed.) Agriculture and the Environment IX, Valuing Ecosystems: Policy, Economic and Management Interactions, pp. 169-174.

Döring, Thomas F.; Storkey, Jonathan; Baddeley, J. A.; Crowley, Oliver; Howlett, S. A.; McCalman, Heather; Pearce, Helen; Roderick, Stephen and Jones, H E (2012) Legume Based Plant Mixtures for Delivery of Multiple Ecosystem Services: weed diversity and weed control. In: McCracken, K (Ed.) Agriculture and the Environment IX, Valuing Ecosystems: Policy, Economic and Management Interactions, pp. 169-174.

Dorn, Brigitte; Jossi, Werner and van der Heijden, Marcel (2011) Leguminosen als Zwischenbegrünung im ökologischen Ackerbau mit konservierender Bodenbearbeitung. [Leguminous cover crops in organic farming systems with conservation tillage.] Poster at: 11. Wissenschaftstagung Ökologischer Landbau, Gießen, 15.-18. März 2011.

Dvorak, Petr; Tomasek, Jaroslav; Hamouz, Karel and Micak, Libor (2013) Začlenění systému povrchového mulčování do technologie pěstování brambor. [Integration of surface mulching in potato cultivation technology.] Česká zemědělská univerzita v Praze, katedra rostlinné výroby, FAPPZ, Praha.

Finze, Jana and Böhm, Herwart (2004) Bedeutung von direkten Regulierungsmaßnahmen und dem Beweidungsmanagement auf den Besatz mit Ampfer-Arten (Rumex spp.) im ökologisch bewirtschafteten Grünland. [Effect of direct measures and grazing management on the density of dock species (Rumex spp.) in organically managed grassland.] Zeitschrift für Pflanzenkrankheiten und Pflanzenschutz, Sonderheft XIX, pp. 527-535.

Finze, Jana and Böhm, Herwart (2003) Strategien zur Ampferbekämpfung im Grünland unter den Bedingungen des ökologischen Landbaus. In: Beiträge der 47. Jahrestagung der AGGF, Wissenschaftlicher Fachverlag Dr. Fleck, D-Gießen, Mitteilungen der Arbeitsgemeinschaft Grünland und Futterbau 2003, no. Band 5, pp. 137-140.

Fischer-Arndt, Meike; Neuhoff, Daniel; Tamm, Lucius and Köpke, Ulrich (2010) Effects of weed management practices on enteric pathogen transfer into lettuce (lactuca sativa var. capitata). Food Control, 21, pp. 1004-1010.

Fogelfors, Håkan; Brandsætter, Lars Olav; Graglia, Scientist Enrico; Vanhala, Petri; Salonen, Jukka and Håkansson, Sigurd (2003) Dormancy of vegetative reproduction in some perennial weeds. In: Niemeläinen, Oiva and Topi-Hulmi, Mari (Eds.) Nordic Agriculture in Global Perspective, Tampere University Print, Tampere Finland, p. 97.

FONTANELLI, DR. M.; FRASCONI, DR. C.; LULLI, DR. L.; ANTICHI, DR. D.; BIGONGIALI, DR. F.; CARLESI, DR. S.; BARBERI, PROF. P. and PERUZZI, PROF. A. (2008) Innovative crop and weed management strategies in organic spinach: machine performances and cultivation costs. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Gallandt, Eric and Molloy, Thomas (2008) Exploiting weed management benefits of cover crops requires pre-emption of seed rain. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Graglia, Enrico and Melander, Bo (2005) Mechanical control of Cirsium arvense in organic farming. Paper at: 13. European Weed Research Society Symposium, Bari, Italy, 20-23 June. [In Press]

Graglia, Enrico; Melander, Bo; Grøndal, Henrik and Jensen, Rikke K. (2004) Effect of repeated hoeing on growth of Cirsium arvense. In: XII International Conference on Weed Biology, pp. 107-112.

Graglia, Enrico; Melander, Bo and Jensen, Rikke (2005) Mechanical and cultural strategies to control Cirsium arvense. Weed Research (46), pp. 304-312.

Griepentrog, Hans W.; Nørremark, Michael; Nielsen, Henning and Blackmore, Simon (2005) Seed Mapping of Sugar Beet. journal, 6 (2), pp. 157-165.

Griepentrog, Hans W.; Nørremark, Michael; Nielsen, Henning and Blackmore, Simon (2003) Individual plant care in cropping systems. Paper at: 4th European Conference on Precision Agriculture, Berlin, Germany, July 2003.

Grosse, Meike; Haase, Thorsten and Heß, Jürgen (2014) Wirkung von reduzierter Bodenbearbeitung und Gründüngung im Ökologischen Landbau auf den Beikrautbesatz. In: Tagungsband 26. Deutsche Arbeitsbesprechung über Fragen der Unkrautbiologie und -bekämpfung.

Grundy, A.C.; Peters, N.C.B.; Rasmussen, I.A.; Hartmann, K.A.; Sattin, M.; Andersson, L.; Mead, A.; Murdoch, A.J. and Forcella, F. (2003) Emergence of Chenopodium album and Stellaria media of different origins under different climatic conditions. Weed Research, 43 (3), pp. 163-176.

Grundy, A.C.; Peters, N.C.B.; Rasmussen, I.A.; Hartmann, K.A.; Sattin, M.; Andersson, L.; Mead, A.; Murdoch, A.J. and Forcella, F. (2002) Emergence of Chenopodium album and Stellaria media under different climatic conditions. In: Bastiaans, L.; Baumann, D.T.; Christensen, S.; Hatcher, P.E.; Kudsk, P.; Grundy, A.C.; Marshall, E.J.P.; Streibig, J.C. and Tei, F. (Eds.) Proceedings: 12th EWRS Symposium, EWRS Bookstore, Postbus 28, NL-6865 ZG Doorwerth, The Netherlands, pp. 264-265.

Haase, Thorsten and Heß, Jürgen (2011) Strategien zur Regulierung der Ackerkratzdistel (Cirsium arvense) im Ökologischen Landbau. [Regulation of Canayda thistle (Cirsium arvense) by soil tillage in organic farming.] Poster at: 11. Wissenschaftstagung Ökologischer Landbau, Gießen, 16.-18. März 2011.

Haigh, Z. E. L.; Baddeley, J. A.; Boyd, H. E.; Clarke, S.; Jones, H.; Rees, R. M. and Wolfe, M. S. (2008) Organic winter wheat: optimising planting. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Hameed, I.A. ; Bochtis, D.D.; Sørensen, C.G and Nørremark, M. (2010) Automated generation of guidance lines for operational field planning. Biosystems Engineering, 107, pp. 294-306.

Hänsel, Martin (2007) Anbau von Erbsen, Sommerweizen und -gerste in Reinsaaten und in Gemengen. [Cultivation of Peas, Spring Wheat and Spring Barley Sole and Intercropped.] Paper at: Zwischen Tradition und Globalisierung - 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Stuttgart, Deutschland, 20.-23.03.2007.

Hänsel, Martin (2011) Regeneration von Körnerleguminosen nach physikalischer Schädigung in der Jugendphase. Paper at: 11. Wissenschaftstagung Ökologischer Landbau, Gießen, 16.-18. März 2011.

Hansen, Preben Klarskov; Rasmussen, Ilse A.; Holst, Niels and Andreasen, Christian (2007) Tolerance of four spring barley (Hordeum vulgare L.) varieties to weed harrowing. Weed Research, 47 (3), pp. 241-251.

Hansen, Preben Klarskov; Willas, Jakob and Kristensen, Kristian (2008) A weed suppressive index for spring barley (Hordeum vulgare L.) varieties. Weed Research Oxford, 48, pp. 225-236.

Hartl, W.; Berger, S.; Birschitzky, J.; Bistrich, H.; Bürstmayr, H.; Diethart, I.; Flamm, C.; Fleck, A.; Friedel, J.; Fuchs, F.; Girsch, L.; Grausgruber, H.; Gollner, M.; Hofer, M.; Hrbek, R.; Jakupaj, S.; Huber, K.; Kinastberger, A.; Lafferty, J.; Leonhardt, C.; Löschenberger, F.; Luftensteiner, H.; Mechtler, K.; Oberforster, M.; Petrasek, R.; Ratzenböck, A.; Schulmeister, K.; Schweiger, P.; Vollmann, J.; Weinhappel, M.; Winkler, J. and Zechner, E. (2009) Österreichisches Projekt Grundlagen zur Züchtung, Vermehrung und Sorten-/Saatgutprüfung für den Biolandbau: Ergebnisübersicht. Poster at: 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.

Hatcher, Lecturer Paul and Melander, Senior scientist Bo (2003) Combining physical, cultural and biological methods: prospects for integrated non-chemical weed management strategies. Weed Research, 43 (5), pp. 303-322.

Heilmann, Hartmut (2011) Probiotische Aspekte des Auftretens der Ackerkratzdistel (CIRSIUM ARVENSE (L.) SCOP.) im Lichte eines ganzheitlichen Forschungsansatzes. Poster at: 11. Wissenschaftstagung Ökologischer Landbau, Gießen, 15.-18. März 2011.

Hiltbrunner, J.; Liedgens, M.; Stamp, P. and Streit, B. (2005) Einfluss von lebenden Mulchen auf die Begleitflora und die Weizenerträge unter Bedingungen des Ökolandbau. [Impact of living mulches on weeds and yield of winter wheat in organic farming.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

Hiltbrunner, Jürg; Herzog, Christine; Hunziker, Hans-Ruedi and Scherrer, Caroline (2009) Mechanische Unkrautregulierung in der Saatreihe von Soja. Paper at: 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.

Hiltbrunner, Jürg and Liegdens, M. (2008) Performance of winter wheat varieties in white clover living mulch. Biological Agriculture & Horticulture, 26, pp. 85-101.

Himstedt, M. and van Elsen, T. (2006) Vegetationskundliche Untersuchungen auf Äckern des ökologischen Landbaus am Beispiel ausgewählter Betriebe in Mittel- und Norddeutschland. Zeitschrift für Pflanzenkrankheiten und Pflanzenschutz, Journal of Plant Diseases and Protection, Sonderheft XX, pp. 597-604.

Holst, N.; Rasmussen, I.A. and Bastiaans, L. (2007) Field weed population dynamics: a review of model approaches and applications. Weed Research, 47 (1), pp. 1-14.

Hotze, C. and van Elsen, T. (2006) Ackerwildkräuter konventionell und biologisch bewirtschafteter Äcker im östlichen Meißnervorland – Entwicklung in den letzten 30 Jahren. Zeitschrift für Pflanzenkrankheiten und Pflanzenschutz, Journal of Plant Diseases and Protection, Sonderheft XX, pp. 547-555.

Hunger, Stefan; Pekrun, Carola and Claupein, Wilhelm (2001) Der Stoppelhobel – eine Alternative zu herkömmlichen Geräten der Stoppelbearbeitung im Ökologischen Landbau? [The shallow plough - an alternative to usual machinery for stubble tillage in organic farming?] In: Reents, Hans-Jürgen (Ed.) Von Leit-Bildern zu Leit-Linien: Beiträge zur 6. Wissenschaftstagung zum Ökologischen Landbau, Verlag Dr. Köster, Berlin, 357 -360.

Hyvönen, Terho (2011) Impact of temperature and germination time on the success of a C4 weed in a C3 crop: Amaranthus retroflexus and spring barley. Agricultural and Food Science, 20 (2), pp. 183-189.

Hyvönen, Terho and Jalli, Heikki (2011) Alien species in the Finnish weed flora. Agricultural and Food Science, 20 (1), pp. 86-95.

Jacobsen, Sven-Erik; Christiansen, J.L. and Rasmussen, Jesper (2010) Weed harrowing and inter-row hoeing in organic grown quinoa (Chenopodium quinoa Willd.). Outlook on Agriculture, 39 (3), pp. 323-327.

Jensen, Rikke K.; Rasmussen, Jesper and Melander, Bo (2004) Selectivity of weed harrowing in lupin. Weed Research, 44, pp. 245-253.

Jobst, Florian; Urbatzka, Peer and Demmel, Markus (2013) Ergebnisse einer Umfrage zur Anbautechnik im ökologischen Sojabohnenanbau in Bayern und Österreich. Paper at: 12. Wissenschaftstagung Ökologischer Landbau, Rheinische Friedrich-Wilhelms-Universität, Bonn, 5. bis 8. März 2013.

Jørgensen, Rasmus N.; Nørremark, Michael; Sørensen, Claus G. and Andersen, Nils Axel (2008) Utilising scripting language for unmanned and automated guided vehicles operating within row crops. Computers and electronics in agriculture, 62, pp. 190-203.

Kaar, B. and Freyer, B. (2008) Weed species diversity and cover-abundance in organic and conventional winter cereal fields and 15 years ago. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Kainz, M; Gerl, G; Lemnitzer, B; Bauchenß, J and Hülsbergen, K-J (2005) Wirkungen differenzierter Bodenbearbeitungssysteme im Dauerversuch Scheyern. [Effects of Different Tillage Systems in the Long-term Field Experiment Scheyern.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

Kelderer, Markus; Casera, Claudio and Lardschneider, Ewald (2006) Was bringen die derzeit 'verfügbaren' Bioherbizide? [What can we expect from the commercially available bio-herbicides?] In: Boos, Markus (Ed.) ecofruit - 12th International Conference on Cultivation Technique and Phytopathological Problems in Organic Fruit-Growing: Proceedings to the Conference from 31st January to 2nd February 2006 at Weinsberg/Germany, Fördergemeinschaft Ökologischer Obstbau e.V. (FÖKO), Traubenplatz 5, D-74189 Weinsberg, pp. 172-177.

König, Dr. Hans-Peter and Koch, Dr. Heinz-Josef (2005) Strategien der Unkrautregulierung in Zuckerrüben - Ergebnisse aus Anbauvergleichen. [Strategies of weed control in sugar beet - results from on-farm trials.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

Köpke, Prof. Ulrich and Schulte, Harald (2008) Direct Seeding of Faba Beans in Organic Agriculture. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Krauss, Maike; Berner, Alfred; Burger, Dieter; Wiemken, Andres; Niggli, Urs and Mäder, Paul (2010) Reduced tillage in temperate organic farming: implications for crop management and forage production. Soil Use and Management, 26, pp. 12-20.

Kristiansen, Mr P; Sindel, Dr B and Jessop, Dr R (2003) Agronomic and economic evaluation of weed management methods in organic herb and vegetable production systems. In: Proceedings of the 11th Australian Agronomy Conference, CD-ROM. Australian Society of Agronomy.

Kristiansen, P.E.; Sindel, B.M. and Jessop, R.S. (2008) Weed management in organic echinacea (Echinacea purpurea) and lettuce (Lactuca sativa) production. Renewable Agriculture and Food Systems, 23 (2), pp. 120-135.

Kuchtová, Perla (2010) Ekologický mák. [Organic Poppy Seed.] In: Mák. 1 edition. Český mák - sdružení pravnických a fyzických osob, Praha, chapter 20, pp. 279-286.

Kuchtová, Perla; Kazda, Jan; Cihlář, Pavel; Plachka, Eva; Hajkova, Miroslava; Havel, Jiří and Dvorak, Petr (2009) Vliv vybraných přípravků a jejich kombinací na výnos máku (Papaver somniferum L.). [Influence of different preparations and their combinations on the yield of poppy seed (Papaver somniferum L.).] In: Bečka, David (Ed.) Prosperující olejniny 2009, 2009 (1), pp. 82-87.

Laber, Hermann and Stützel, Hartmut (2003) Ertragswirksamkeit der Restverunkrautung in Gemüsekulturen nach nichtchemischen Unkrautregulationsmaßnahmen. [Yield effects of residual weeds in vegetable crops after nonchemical weed regulation.] Pflanzenbauwissenschaften, 7 (1), pp. 29-38.

Laber, Hermann and Stützel, Hartmut (2000) Nebenwirkungen mechanischer Unkrautregulationsmaßnahmen im Gemüsebau. [Side effects of mechanical weed control measures in vegetable production.] Zeitschrift für Pflanzenkrankheiten und Pflanzenschutz, Sonderheft, XVII, pp. 653-660.

Latsch, Dr. Roy and Sauter, Dr. Joachim (2009) Ergebnisse zur Ampferbekämpfung mittels Mikrowellentechnologie. Paper at: 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.

Latsch, Roy; Sauter, Joachim and Kaeser, Alexandra (2011) Ampferkontrolle mittels Heissdampfinjektion. [Dock control with hot water steam.] Poster at: 11. Wissenschaftstagung Ökologischer Landbau, Gießen, 15.-18. März 2011.

Latsch, Roy; Sauter, Joachim and Sauter, Monika (2013) Eignung unterschiedlicher Applikationsköpfe für die Ampferbekämpfung mit Heißwasser. Paper at: 12. Wissenschaftstagung Ökologischer Landbau, Rheinische Friedrich-Wilhelms-Universität, Bonn, 5. bis 8. März 2013.

Loges, Dr Ralf; Häussler, M. Sc Robert and Taube, Prof. Dr. Friedhelm (2009) Beitrag einer termingerecht durchgeführten Kainit-Düngung zur Beikrautregulierung in Winterweizen. Poster at: 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.

Lötjönen, T.; Vanhala, P.; Hurme, T. and Salonen, J. (2005) Sonchus arvensis - a challenge for organic farming. In: NJF Report, Nordic Association of Agricultural Scientists, 1 (1), pp. 189-192.

Lukashyk, P; Berg, B and Köpke, U (2005) Einsatz des Striegels zur Regulierung von Vicia hirsuta in Winterweizen. [Controlling Vicia hirsuta in winter wheat by using a tine - harrow.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

Lukashyk, P; Berg, M and Köpke, U (2005) Kontrolle von Cirsium arvense durch Stoppelbearbeitung. [The effect of stubble tillage on Cirsium arvense.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

Lukashyk, P.; Berg, M.; Juroszek, P. and Köpke, U. (2002) Direkte Kontrolle von Vicia hirsuta (L.) S.F. Gray in Wintergetreide. [Direct control of Vicia hirsuta (L.) S.F. Gray in winter grains.] In: Maidl, F.-X. and Diepenbrock, W. (Eds.) Mitteilungen der Gesellschaft für Pflanzenbauwissenschaften, Verlag Freisinger Künstlerpresse W. Bode, 14, pp. 173-174.

Lukashyk, P.; Berg, M. and Köpke, U. (2004) Direkte Kontrolle von Vicia hirsuta (L.) S.F. GRAY in Getreidebeständen des Organischen Landbaus. [Direct control of Vicia hirsuta (L.) S.F. GRAY in winter cereals of organic farming.] Zeitschrift für Pflanzenkrankheiten und Pflanzenschutz (Sonderheft XIX), pp. 503-510.

Lukashyk, P. and Köpke, U. (2005) Combination of different methods for direct control of vicia hirsuta in winter wheat. In: Köpke, Ulrich; Niggli, Urs; Neuhoff, Daniel; Cornish, Peter; Lockeretz, Willie and Willer, Helga (Eds.) Researching Sustainable Systems. Proceedings of the First Scientific Conference of the International Society of Organic Agriculture Research (ISOFAR). Research Institute of Organic Agriculture FiBL, CH-Frick, and International Society of Organic Agriculture Research (ISOFAR), c/o Institute of Organic Agriculture IOL, DE-University of Bonn, pp. 119-122.

Lux, Guido; Pötzsch, Frank and Schmidtke, Knut (2013) Regulierung annueller Samenunkräuter durch den Einsatz von Grünguthäcksel unter Bedingungen des ökologischen Landbaus. Paper at: 12. Wissenschaftstagung Ökologischer Landbau, Rheinische Friedrich-Wilhelms-Universität, Bonn, 5. bis 8. März 2013.

Massucati, Luiz; Geib, Ben and Köpke, Ulrich (2011) Effekte temporärer Direktsaat von Ackerbohnen (Vicia faba sp.) auf die Segetalflora im Ökologischen Landbau. Poster at: 11. Wissenschaftstagung Ökologischer Landbau, Gießen, 15.-18. März 2011.

Melander, B. and Jørgensen, M.H. (2005) Soil steaming to reduce intrarow weed seedling emergence. Weed Research, 45 (3), pp. 202-211.

Melander, Bo (2004) Nonchemical weed control: New Directions. In: Goodman, Robert M. (Ed.) Encyclopedia of Plant and Crop Science. Marcel Dekker, Inc., New York, pp. 1-3.

Melander, Bo; Cirujeda, Alicia and Jørgensen, Martin Heide (2003) Effects of inter-row hoeing and fertilizer placement on weed growth and yield of winter wheat. Weed Research, 43 (6), pp. 428-438.

Melander, Bo; Rasmussen, Ilse A and Bertelsen, Inger (2005) Integration of Elymus repens control and post-harvest catch crop growing in organic cropping systems. Paper at: 13th European Weed Research Society Symposium, Bari, Italy, 19 - 23 June 2005. [In Press]

Melander, Bo; Rasmussen, Ilse A. and Barberi, Paolo (2005) Integrating Physical and Cultural Methods of Weed Control – Examples from European Research. Weed Science, 53, pp. 369-381.

Melander, Senior scientist Bo (1998) Economic Aspects of Physical Intra-Row Weed Control in Seeded Onions. In: Foguelman, Dina and Lockeretz, Willie (Eds.) Proceedings og the 12th International IFOAM Scientific Conference, pp. 180-185.

Melander, Senior scientist Bo (1998) Interactions between soil cultivation in darkness, flaming, and brush weeding when used for in-row weed control in vegetables. Biological Agriculture & Horticulture, 16 (1), pp. 1-14.

Melander, Senior scientist Bo (1997) Optimization of the adjustment of vetical axis rotary brush weeder for intra row weed control in row crops. Journal of Agricultural Engineering Research, 68, pp. 39-50.

Melander, Senior scientist Bo and Hartvig, Technicians Peter (1997) Yield responses of weed-free seeded onions [Allium cepa (L.)] to hoeing close to the row. Crop Protection, 16 (7), pp. 687-691.

Melander, Senior scientist Bo and Rasmussen, Scientist Gitte (2001) Effects of cultural methods and physical weed control on intrarow weed numbers, manual weeding and marketable yield in direct-sown leek and bulb onion. Weed Research, 41 (6), pp. 491-508.

Melander, Senior scientist Bo and Rasmussen, Scientist Karsten (2000) Reducing intra-row weed numbers in row crops by means of a biennial cultivation system. Weed Research, 40 (2), pp. 205-218.

Melander, B.; Kristensen, J.K.; Kristensen, K.; Mathiassen, S.K.; Nørremark, M. and Kristensen , E.F. (2011) Physical destruction of the sprouting ability of Elytrigia repens rhizome buds. Weed Research, 51, pp. 469-477.

Melander, B. and Olesen, J.E. (2013) Improved weed management in organic crop production. In: Løes, Anne-Kristin; Askegaard, Margrethe; Langer, Vibeke; Partanen, Kirsi; Pehme, Sirli; Rasmussen, Ilse A.; Salomon, Eva; Sørensen, Peter; Ullvén, Karin and Wivstad, Maria (Eds.) Organic farming systems as a driver for change, NJF Report, no. 9 (3), pp. 81-82.

Melander, Bo (2011) Mechanical, thermal and robotic weeding for minimising laborious hand-weeding in row crops. In: Neuhoff, Daniel; Halberg, Niels; Rasmussen, Ilse A.; Hermansen, J.E.; Ssekyewa, Charles and Sohn, Sang Mok (Eds.) ISOFAR International Scoiety of Organic Agriculture Research, ISOFAR, 1, Organic crop production, pp. 688-691.

Melander, Bo and Kristensen, J.K. (2011) Soil steaming effects on weed seedling emergence under the influence of soil type, soil moisture, soil structure and heat duration. Annals of Applied Biology, 158, pp. 194-203.

Melander, Bo; Nørremark, Michael and Kristensen, E.F. (2013) Combining mechanical rhizome removal and cover crops for Elytrigia repens control in organic barley systems. Weed Research, 53 (6), pp. 461-469.

Melander, Bo; Rasmussen, Ilse A.; Holst, Niels and Hansen, Preben Klarskov (2012) Direct control of perennial weeds between crops – implications for organic farming. Crop Protection, 40, pp. 36-42.

Moos, Jan Hendrik; Paulsen, Hans Marten and Rahmann, Gerold (2013) Monitoring der Deckungsgrade der Segetalflora auf Flächen des ökologischen Landbaus über einen Zeitraum von 10 Jahren. Poster at: 12. Wissenschaftstagung Ökologischer Landbau, Rheinische Friedrich-Wilhelms-Universität, Bonn, 5. bis 8. März 2013.

Nkurunziza, L. and Streibig, J.C. (2013) Temperature effect on fructan storage and regeneration of Canada thistle (Cirsium arvense (L.) Scop). In: Løes, Anne-Kristin; Askegaard, Margrethe; Langer, Vibeke; Partanen, Kirsi; Pehme, Sirli; Rasmussen, Ilse A.; Salomon, Eva; Sørensen, Peter; Ullvén, Karin and Wivstad, Maria (Eds.) Organic farming systems as a driver for change, NJF Report, no. 9 (3), pp. 79-80.

Nkurunziza, Libère and Streibig, Jens Carl (2010) Carbohydrate dynamics in roots and rhizomes of Cirsium arvense and Tussilago farfara. Weed Research, 51 (5), pp. 461-468.

Nørremark, Michael and Griepentrog, Hans W. (2003) A method for high accuracy geo-referencing of data from field operations. Paper at: 4th European Conference on Precision Agriculture, Berlin, Germany, July 2003.

Oberholzer, Hans-Rudolf; Fließbach, Andreas; Mäder, Paul and Mayer, Jochen (2009) Einfluss von biologischer und konventioneller Bewirtschaftung auf biologische Bodenqualitätsparameter im DOK Langzeitversuch. In: Wiesler, F.; Schenkel, H. and Ebertseder, T. (Eds.) Produktivität und Umweltschonung in der Landwirtschaft – ein Widerspruch?, VDLUFA-Verlag, D-Speyer, p. 96.

Olesen, Jørgen E.; Hansen, Preben Klarskov; Berntsen, Jørgen and Christensen, Svend (2004) Simulation of Above-Ground Suppression of Competing Species and Competition Tolerance in Winter Wheat Varieties. Field Crop Research, 89, pp. 263-280.

P. Massucati, Dipl.-Ing.agr. Luiz F.; Windisch, Evi; Täufer, Frank and Köpke, Prof. Dr. Ulrich (2009) Kontrolle von Rumex spp. mit Citronella-Öl im Organischen Landbau. Paper at: 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.

P. Massucati, Luiz F. and Köpke, Ulrich (2010) Weed Control with Straw Residues in Occasional Direct Seeding of Faba Bean (Vicia faba sp.) in Organic Agriculture. In: Gil Ribes, Jesús Antonio; Gonzáles Sánchez, Emilio Jesús; Ordónez Hernández, Rafaela and Veroz Gonzáles, Óscar (Eds.) Towards Agro-Environmental Climate and Energetic Sustainability, V.A. Impresores, S.A., Madrid, pp. 575-584.

Parveaud, Claude-Eric; Gomez, Christelle; Bussi, Claude and Capowiez, Yvan (2010) Effect of permanent ground cover on agronomic properties and soil fertility in an organic peach orchard. Poster at: 28th International Horticultural Congress, Lisbonne, Portugal, 22-27 August 2010.

Parveaud, Claude-Eric; Gomez, Christelle; Bussi, Claude and Capowiez, Yvan (2012) Effect of White clover (Trifolium repens cv. Huia) cover crop on agronomic properties and soil biology in an organic peach orchard. ACTA HORTICULTURAE, 933 (1), pp. 373-380.

Paulsen, Hans Marten; Schochow, Martin; Ulber, B; Kühne, Stefan and Rahmann, Gerold (2006) Mixed cropping systems for biological control of weeds and pests in organic oilseed crops. In: Atkinson, Chris and Younie, David (Eds.) What will organic farming deliver?, AAB Office, Warwick, UK, Aspects of Applied Biology, no. 79, pp. 215-220.

Peigné, Joséphine; Vian, Jean-François; Cannavaccuiolo, Mario; Aveline, Anne and Gautronneau, Yvan (2010) Weeds and crop yields under conservation tillage in organic farming. In: Wery, Jacques; Shili-Touzi, I. and Perrin, Aurélie (Eds.) Proceedings of AGRO2010, XIth Congress of the European Society of Agronomy.

Pekrun, Carola and Claupein, Wilhelm (2006) The implication of stubble tillage for weed population dynamics in organic farming. Weed Research, 46 (5), pp. 414-423. [In Press]

Pekrun, Carola and Claupein, Wilhelm (2005) Bedeutung der Stoppelbearbeitung für die Unkrautkontrolle im Ökologischen Landbau. [The implication of stubble tillage for weed control in Organic Farming.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

Pekrun, Carola and Claupein, Wilhelm (2004) The effect of stubble tillage and primary tillage on population dynamics of Canada Thistle (Cirsium arvense) in organic farming. Journal of Plant Diseases and Protection, Special Issue, XIX, pp. 483-490.

Pekrun, Carola and Claupein, Wilhelm (2001) Einfluß der Stoppelbearbeitung auf Ertagsbildung und Unkrautaufkommen unter den Produktionsbedingungen des Ökologischen Landbaus unter besonderer Berücksichtigung der Wirkung des Stoppelhobels. [The influence of stubble tillage on yields and weeds under the conditions of organic farming with special reference to shallow ploughing post harvest.] In: Reents, Hans Jürgen (Ed.) Von Leit-Bildern zu Leit-Linien: 6. Wissenschaftstagung zum Ökologischen Landbau, Verlag Dr. Köster, Berlin, pp. 203-206.

Pekrun, Carola; Hofrichter, Veit; Link, Johanna; Thymian, Frank; Thumm, Ulrich and Claupein, Wilhelm (2005) Beeinflussung der generativen Vermehrung von Rumex obtusifolius durch produktionstechnische Maßnahmen. [Influencing generative reproduction of Rumex obtusifolius by agronomic means.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

Pekrun, Dr. Carola; Jund, Dorothea; Hofrichter, Veit; Wagner, Susanne; Thumm, Ulrich and Claupein, Wilhelm (2002) Pflanzen- und ackerbauliche Maßnahmen zur Ampferbekämpfung auf Acker- und Grünlandflächen unter den Produktionsbedingungen des Ökologischen Landbaus. [Indirect means of weed control against Rumex spec. on arable fields and grassland in organic farming.] Zeitschrift Pflanzenkrankheiten Pflanzenschutz, Sonderheft, XVIII, pp. 533-540.

Peruzzi, A.; Raffaelli, M.; Fontanelli, M.; Frasconi, C.; Ginanni, M. and Lulli, L. (2008) Physical Weed Control in Organic Carrot in Sicily (Italy). Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Peruzzi, A.; Raffaelli, M.; Fontanelli, M.; Frasconi, C.; Lulli, L. and Ginanni, M. (2008) Innovative Mechanization of Garlic in Vessalico (North Italy). Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Peruzzi, A.; Raffaelli, M.; Ginanni, M.; Lulli, L.; Frasconi, C. and Fontanelli, M. (2008) Innovative strategies for physical weed control on processing tomato in the Serchio Valley (Central Italy). Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Petersen, J. (2003) Weed - spring barley competition for applied nitrogen in pig slurry. Weed Research (43), pp. 33-39.

Rasmussen, I.A.; Askegaard, M. and Olesen, J.E. (2005) Long-term organic crop rotation experiments for cereal production - perennial weed control and nitrogen leaching. In: Köpke, U.; Niggli, U.; Neuhoff, D.; Cornish, P.; Lockeretz, W. and Willer, H. (Eds.) Researching Sustainable Systems: Proceedings of the First Scientific Conference of the International Society of Organic Agriculture Research (ISOFAR), International Society of Organic Agriculture Research (ISOFAR), pp. 227-230.

Rasmussen, I.A.; Askegaard, M. and Olesen, J.E. (2005) Management of perennial weeds and nitrogen leaching in arable cropping systems. In: NJF Report, Nordic Association of Agricultural Scientists (NJF), 1 (1), pp. 153-156.

Rasmussen, I.A.; Askegaard, M.; Olesen, J.E. and Kristensen, K. (2006) Effects on weeds of management in newly converted organic crop rotations in Denmark. Agriculture, Ecosystems & Environment, 113, pp. 184-195.

Rasmussen, Ilse A. (2004) The effect of sowing date, stale seedbed, row width and mechanical weed control on weeds and yields of organic winter wheat. Weed Research, 44 (1), pp. 12-20.

Rasmussen, Ilse A. (2004) Weed management in organic cropping systems. In: Goodman, Robert M. (Ed.) Encyclopedia of Plant and Crop Science. Marcel Dekker Inc., pp. 1-4.

Rasmussen, Ilse A.; Askegaard, Margrethe and Olesen, Jørgen E. (2006) The Danish organic crop rotation experiment for cereal production 1997-2004. In: Raupp, J.; Pekrun, C.; Oltmanns, M. and Köpke, U. (Eds.) Long-term Field Experiments in Organic Farming. ISOFAR (International Society of Organic Agriculture Research) Scientific Series. Verlag Dr. Köster, pp. 117-134.

Rasmussen, Ilse A.; Askegaard, Margrethe and Olesen, Jørgen E. (1999) Plant protection in an organic crop rotation experiment for grain production. In: Olesen, Jørgen E.; Eltun, Ragnar; Gooding, Mike J.; Jensen, Erik Steen and Köpke, Ulrich (Eds.) DARCOF report no. 1: Designing and testing crop rotations for organic farming. Proceedings from an international workshop, Danish Research Centre for Organic Farming, pp. 321-330.

Rasmussen, Ilse A.; Askegaard, Margrethe and Olesen, Jørgen E. (1999) Weed control in organic crop rotations for grain production. In: Kropff, M.J.; Gut, D.; Streibig, J.C. and Baumann, D.T. (Eds.) Proceedings 11th EWRS Symposium, European Weed Research Society, p. 98.

Rasmussen, Ilse A. and Holst, Niels (2003) Computer model for simulating the long-term dynamics of annual weeds: from seedlings to seeds. Aspects of Applied Biology (69), pp. 277-284.

Rasmussen, Jesper (2003) Punch planting, flame weeding and stale seedbed for weed control in row crops. Weed Research, 43, pp. 393-403.

Rasmussen, Jesper; Bibby, Bo Martin and Schou, Anders P. (2008) Investigating the selectivity of weed harrowing with new methods. Weed Research, 48 (6), pp. 523-532.

Rasmussen, Jesper; Kurtzmann, J.I. and Jensen, A. (2004) Tolerance of competitive spring barley cultivars to weed harrowing. Weed Research, 44, pp. 446-452.

Rasmussen, Jesper; Mathiasen, Helle and Bibby, Bo Martin (2010) Timing of post-emergence weed harrowing. Weed Research, 50, pp. 436-446.

Rasmussen, Jesper; Nielsen, Helle H. and Gundersen, Hanne (2009) Tolerance and selectivity of cereal species and cultivars to postemergence weed harrowing. Weed Science, 57, pp. 338-345.

Rasmussen, Jesper and Nørremark, Michael (2006) Digital image analysis offers new possibilities in weed harrowing research. Zemdirbyste/Agriculture, 93 (4), pp. 155-165.

Rasmussen, Jesper; Nørremark, Michael and Bibby, Bo Martin (2007) Assessment of leaf cover and crop soil cover in weed harrowing research using digital images. Weed Research, 47, pp. 299-310.

Rasmussen, K. (2002) Influence of liquid manure application method on weed control in spring cereals. Weed Research (42), pp. 287-298.

Rasmussen, I.A. (2011) Use of competitive crops to reduce Cirsium arvense. In: Neuhoff, Daniel; Halberg, Niels; Rasmussen, Ilse A.; Hermansen, John; Ssekyewa, Charles and Sohn, Sang Mok (Eds.) Organic is Life - Knowledge for Tomorrow. Organic Crop Production. Proceedings of the Third Scientific Conference of the International Society of Organic Agriculture Research, 1, pp. 692-695.

Rasmussen, Ilse A.; Melander, Bo; Askegaard, Margrethe; Kristensen, Kristian and Olesen, Jørgen E. (2014) Elytrigia repens population dynamics under different management schemes in organic cropping systems on coarse sand. European Journal of Agronomy, 58, 18-27.

Rasmussen, Jesper (2011) Erfaringer med nye teknologier i rækkeafgrøder. [Experiences with new technologies in row crops.] Speech at: Plantekongres, Herning Kongrescenter, 11.-13. januar 2011.

Rasmussen, Jesper; Griepentrog, Hans W.; Nielsen, J. and Henriksen, Christian Bugge (2012) Automated intelligent rotor tine cultivation and punch planting to improve the selectivity of mechanical intra-row weed control. Weed Research, 52, 327- 337.

Rasmussen, Jesper; Henriksen, Christian Bugge; Griepentrog, Hans W. and Nielsen, Jon (2011) Punch planting, flame weeding and delayed sowing to reduce intra-row weeds in row crops. Weed Research, 51, pp. 489-498.

Renaud, E.N.C; Lammerts van Bueren, E.T.; Paulo, M.J.; Eeuwijk, F.A.; Juvik, J.A.; Hutton, M.G. and Myers, J. R (2014) Broccoli cultivar performance under organic and conventional management systems and implications for crop improvement. Crop Science, 54 (4), pp. 1539-1554.

Riesinger, Paul and Hyvönen, Terho (2006) Weed occurrence in Finnish coastal regions: a survey of organically cropped spring cereals. Agricultural and Food Science, 15 (2), pp. 166-182.

Ringselle, B.; Andersson, L.; Bergkvist, G. and Aronsson, H. (2013) Resource effective control of Elymus repens. In: Løes, Anne-Kristin; Askegaard, Margrethe; Langer, Vibeke; Partanen, Kirsi; Pehme, Sirli; Rasmussen, Ilse A.; Salomon, Eva; Sørensen, Peter; Ullvén, Karin and Wivstad, Maria (Eds.) Organic farming systems as a driver for change, NJF Report, no. 9 (3), pp. 77-78.

Rueda-Ayala, Victor ; Rasmussen, Jesper and Gerhards, Roland (2010) Mechanical weed control. In: Oerke, E-C; Gerhards, R; Menz, G and Sikora, RA (Eds.) Precision Crop Protection – the Challenge and Use of Heterogeneity. Springer, London, chapter 17, pp. 279-294.

Rueda–Ayala , Victor; Rasmussen, Jesper; Gerhards , Roland and Fournaise , N.A. (2011) The influence of post-emergence weed harrowing on selectivity, crop recovery and crop yield in different growth stages of winter wheat. Weed Research, 51, pp. 478-488.

Salonen, Jukka; Hyvönen, Terho and Jalli, Heikki (2005) Weed flora and weed management of field peas in Finland. Agricultural and Food science, 14 (2), pp. 189-201.

Salonen, Jukka; Hyvönen, Terho and Jalli, Heikki (2011) Composition of weed flora in spring cereals in Finland - a fourth survey. Agricultural and Food Science, 20 (3), pp. 245-261.

Sans, F. X.; Berner, A.; Armengot, L. and Mäder, P. (2011) Tillage effects on weed communities in an organic winter wheat-sunflower-spelt cropping sequence. Weed Research, 51, pp. 413-421.

Sauter, Joachim; Latsch, Roy; Sauter, Monika and Odermatt, Walter (2013) Erd-Wurzel-Separation nach dem maschinellen Ausstechen von Ampfer (Rumex obtusifolius). Paper at: 12. Wissenschaftstagung Ökologischer Landbau, Rheinische Friedrich-Wilhelms-Universität, Bonn, 5. bis 8. März 2013.

Schjønning, Per; Rasmussen, Karl J.; Munkholm, Lars J. and Nielsen, Peter S. (2002) Jordbearbejdning i økologisk jordbrug – pløjedybde og ikke-vendende jordløsning [Soil tillage in organic farming – ploughing depth and non-inversion deep tillage]. DJF Rapport, Markbrug, no. 82. Danish Institute of Agricultural Science, Department of Crop Physiology and Soil Science.

Schmidtke, Knut; Wunderlich, Beate and Meyercordt, Armin (2013) Lassen sich Winterweizensorten hinsichtlich ihres Beschattungsvermögens statistisch gesichert in Landessortenversuchen voneinander unterscheiden? Paper at: 12. Wissenschaftstagung Ökologischer Landbau, Rheinische Friedrich-Wilhelms-Universität, Bonn, 5. bis 8. März 2013.

Schochow, Dipl.-Ing. agr. Martin and Paulsen, Dr. Hans Marten (2005) Unkrautunterdrückung von ökologischen Mischfruchtanbausystemen: Effektivitätskontrolle durch Messung der photosynthetisch aktiven Strahlung. [Weed suppression of organic mixed cropping systems: Control of efficiency with measurement of photosynthetic active radiation.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

Schrade, Sabine; Pekrun, Carola; Oechsner, Hans and Claupein, Wilhelm (2003) Untersuchungen zum Einfluss der Biogasgärung auf die Keimfähigkeit von Unkraut- und Kulturpflanzensamen unter besonderer Berücksichtigung des Ampfers (Rumex obtusifolius). [Studies on the impact of biogas fermentation on germinability of weed and crop seeds with special consideration of Rumex obtusifolius.] In: Freyer, Bernhard (Ed.) 7. Wissenschaftstagung zum ökologischen Landbau: Ökologischer Landbau der Zukunft, pp. 531-532.

Schultz, Britta and Saucke, Dr. Helmut (2005) Einfluss verschiedener Saattermine auf den Erbsenwicklerbefall (Cydia nigricana Fabr.) in ökologischen Gemüseerbsen. In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

Schulz, Franz; Brock, Christopher and Leithold, Günter (2009) Effekte unterschiedlicher Systeme der Grundbodenbearbeitung auf Erträge und Beikraut im Dauerfeldversuch Gladbacherhof. Paper at: 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.

Sjursen, Helge; Brandsæter, Lars Olav and Seljåsen, Randi (2008) Change of the weed seed bank during the first four years of a five-course crop rotation with organic vegetables. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Sprenger, B. (2005) Auswirkungen reduzierter Bodenbearbeitung und Vorfrucht auf die Unkrautvegetation. [Effects of reduced tillage and previous crop on weed vegetation.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

Stumm, Christoph; Berg, Dr. Martin and Köpke, Prof. Dr. Ulrich (2009) Anbau und Düngung von Winterraps (Brassica napus L.) im Ökologischen Landbau. Paper at: 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.

Stumm, Christoph and Köpke, Ulrich (2007) Untersaaten in Kartoffeln zur Reduzierung der Spätverunkrautung. [Underseeds in potatoes to reduce late weed infestation.] Paper at: Zwischen Tradition und Globalisierung - 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Stuttgart, Deutschland, 20.-23.03.2007.

Suter, Matthias; Siegrist-Maag, Sandra and Luescher, Andreas (2007) Beeinflusst die Bewirtschaftung das Vorkommen von Jakobskreuzkraut (Senecio jacobaea)? [Can the occurrence of Senecio jacobaea be influenced by management practice?] Paper at: Zwischen Tradition und Globalisierung - 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Stuttgart, Deutschland, 20.-23.03.2007.

Suter, Dr. Matthias and Lüscher, Dr. Andreas (2009) On-Farm Risikoanalysen zur Entwicklung von Kontrollmaßnahmen bei Kreuzkraut-Arten. [On-farm risk-assessment supports the control of Senecio species.] Paper at: 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.

Swain, Kishore; Nørremark, Michael; Jørgensen, Rasmus N.; Midtiby, Henrik S. and Green, Ole (2011) Weed identification using an automated active shape matching (AASM) technique. Biosystems Engineering, 110, pp. 450-457.

Sørensen, C.G.; Jørgensen, R.N.; Maagaard, J.; Bertelsen, K.K.; Dalgaard, L. and Nørremark, M. (2010) Conceptual and user-centric design guidelines for a plant nursing robot. Biosystems Engineering, 105 (1), pp. 119-129.

Talgre, Liina and Eremeev, Viacheslav (2012) Kõrreliste vahekultuuride mõju umbrohtumusele. [Influence of graminaceous green manure on weeds.] In: Metspalu, Luule and Luik, Anne (Eds.) "Teaduselt mahepõllumajandusele" konverentsi toimetised.

Teasdale, John R. and Cavigelli, Michel A. (2008) Performance of Organic Grain Cropping Systems in Long-Term Experiments. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Tein, Berit; Eremeev, Viacheslav; Reintam, Endla; Talgre, Liina; Sanchez de Cima, Diego and Luik, Anne (2013) Effect of green manures on weeds, crop yields and soil properties in Estonia. Poster at: 7th ORC Organic Producers Conference: Making producer-led innovation a reality, Birmingham, UK, January 2013.

Thomsen, M.G.; Brandsæter, L.O.; Mangerud, K. and Riley, H. (2013) Control of perennial weeds based on weed biology and environmental considerations. In: Løes, Anne-Kristin; Askegaard, Margrethe; Langer, Vibeke; Partanen, Kirsi; Pehme, Sirli; Rasmussen, Ilse A.; Salomon, Eva; Sørensen, Peter; Ullvén, Karin and Wivstad, Maria (Eds.) Organic farming systems as a driver for change, NJF Report, no. 9 (3), pp. 75-76.

Tyystjärvi, Esa ; Nørremark, Michael; Mattila, Heta ; Keränen, Mika ; Hakala-Yatkin, Marja ; Ottosen, Carl-Otto and Rosenqvist, Eva (2011) Automatic identification of crop and weed species with chlorophyll fluorescence induction curves. Precision Agriculture, 12, pp. 546-563.

Urbatzka, MSC Peer; Graß, Dr. Rüdiger and Schüler, Dr. Christian (2005) Nutzung pflanzengenetischer Ressourcen für den ökologischen Landbau am Beispiel von Wintererbsen. [Use of plant genetic resources in organic agriculture - the example of winter pea.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

van der Heijden, Marcel; Wittwer, Raphael; Honegger, Adi and Hegglin, Django (2013) Welchen Einfluss hat die Dauer der biologischen Bewirtschaftung auf den Ertrag und die Biodiversität im Maisanbau? Ergebnisse einer Praxisstudie. Paper at: 12. Wissenschaftstagung Ökologischer Landbau, Rheinische Friedrich-Wilhelms-Universität, Bonn, 5. bis 8. März 2013.

van der Weide, R.Y.; Bleeker, P.O.; Achten, V.T.J.M.; Plotz, L.A.; Fogelberg, F. and Melander, B. (2008) Innovation in mechanical weed control in crop rows. [Nye mekaniske metoder til bekæmpelse af ukrudt i rækken i rækkeafgrøder.] Weed Research, 48, pp. 215-224.

van Elsen, T.; Köpke, U.; Pallutt, B. and Jüttersonke, B. (2006) Maßnahmen zur Unkrautregulierung. In: Kühne, S.; Burth, U. and Marx, P. (Eds.) Biologischer Pflanzenschutz im Freiland. Pflanzengesundheit im Ökologischen Landbau. Ulmer, Stuttgart, pp. 17-40.

van Loenen, M. C. A., ; Turbett, Y., ; Mullins, C. E., ; Feilden, N. E. H., ; Wilson, M. J., ; Leifert, C., and Seel, W. E., (2003) Low temperature-short duration steaming of soil kills soil-borne pathogens, nematode pests and weeds. European Journal of Plant Pathology, 109 (9), pp. 993-1002.

Vanhala, Petri; Lötjönen, Timo; Hurme, Timo and Salonen, Jukka (2006) Managing Sonchus arvensis using mechanical and cultural methods. Agricultural and Food Science, 15 (4), pp. 444-458.

Vanhala, Petri and Pietola, Liisa (2003) Effect of conservation tillage and peat application on weed infestation on a clay soil. Agricultural and Food Science in Finland, 12 (2), pp. 133-145.

Verschwele, Arnd (2008) Effects of sowing measures on weeds and yield of organically grown wheat. In: Hurle, Karl (Ed.) Proceedings of the 5th International Weed Science Congress, Vancouver, Canada. , pp. 255-256.

Verschwele, Arnd (2007) Phytotoxische Wirkungen pflanzlicher Öle auf Keimung und Wachstum von Unkräutern. In: Mitteilungen aus der Biologischen Bundesanstalt für Land- und Forstwirtschaft. 55. Deutsche Pflanzenschutztagung in Göttingen 25. - 28. September 2006. , pp. 245-246.

Verschwele, Arnd and Zwerger, Peter (2005) Effects of organic farming on weed abundance - long-term results from a site in northern Germany. [Auswirkungen des Ökologischen Landbaus auf die Verunkrautung - Langzeitergebnisse von einem Standort in Norddeutschland.] In: Barberi, Paolo, et al. (Ed.) Proceedings of the 13th EWRS Symposium, EWRS.

Verschwele, Dr. Arnd (2009) Versuche zum Falschen Saatbett bei Winterweizen. Paper at: 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.

Verschwele, Dr. Arnd (2005) Unkrautregulierung mit Herbiziden - Chancen und Risiken für den Ökologischen Landbau. [Weed control with herbicides - chances and risks for organic farming.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

Verschwele, Arnd (2011) Optimierung der Unkrautbekämpfung in Körnererbsen. [Improving weed control in peas.] Poster at: 11. Wissenschaftstagung Ökologischer Landbau, Gießen, 15.-18. März 2011.

von Fragstein und Niemsdorff, P. and Kristiansen, P. (2006) Crop agronomy in organic agriculture. In: Kristiansen, P.; Taji, A. and Reganold, J. (Eds.) Organic Agriculture: a Global Perspective. CSIRO Publishing, Collingwood, pp. 53-82.

Zaller, Johann G (2006) Allelopathic effects of Rumex obtusifolius leaf extracts against native grassland species. Journal of Plant Diseases and Protection. Special Issue, XX, pp. 463-470.

Zaller, Johann G (2004) Competitive ability of Rumex obtusifolius against native grassland species: above- and belowground allocation of biomass and nutrients. Journal of Plant Diseases and Protection, 19, pp. 345-351.

Østergård, H.; Kristensen, K.; Pinnschmidt, H.O.; Hansen, P.K. and Hovmøller, M.S. (2008) Predicting spring barley yield from variety-specific yield potential, disease resistance and straw length, and from environment-specific disease loads and weed pressure. Euphytica, 163, pp. 391-408.

Not peer-reviewed

Wilhelm, Birgit and Hensel, Oliver (Eds.) (2011) Landtechnische Lösungen zur Beikrautregulierung im Ökolandbau. [Agricultural engineering solutions for weed control in organic farming.] DITSL GmbH, D-Witzenhausen.

Fischl, Martin; Kranzler, Andreas and Lindenthal, Thomas (Eds.) (2008) Bioherbstanbau 2008: Wintergetreide - Informationen zu Sorten, Saatgut, Richtlinien, Krankheiten und Beikrautregulierung. Ländliches Fortbildungsinstitut Österreich, A-Wien.

Østergård, H. and Fontaine, L. (Eds.) (2006) Cereal crop diversity: Implications for production and products. ITAB, Paris. Proceedings of COST SUSVAR workshop, La Besse, Paris (FR), 12-15 Jun 2006.

Häseli, Andreas (Ed.) (2006) Fachtagung Bioobstbau 2006. [Proceedings of the FiBL Organic Fruit Seminar 2006.] Forschungsinstitut für biologischen Landbau (FiBL), CH-Frick.

Häseli, Andreas (Ed.) (2004) Tagungsband zur FiBL Obstbautagung 28.01.2004 in Frick. [Proceedings of the FiBL fruit seminar, 28.1.2004 in Frick.] Forschungsinstitut für biologischen Landbau, Frick. Proceedings of FiBL Obstbautagung, Frick, 28.01.2004.

Böhm, Herwart; Engelke, Thomas; Finze, Jana; Häusler, Andreas; Pallutt, Bernhard; Verschwele, Arnd and Zwerger, Peter (Eds.) (2003) Strategien zur Regulierung von Wurzelunkräutern im ökologischen Landbau. [Strategies to root-weed regulation in organic agriculture.] Bundesforschungsanstalt für Landwirtschaft (FAL), Braunschweig, Landbauforschung Völkenrode - Sonderheft, no. 255. Proceedings of Expertenkolloquium "Strategien zur Regulierung von Wurzelunkräutern im ökologischen Landbau", Braunschweig, 18. - 19. Februar 2003.

Kühne, Stefan and Britta Friedrich, Biologische Bundesanstalt für Land- und Forstwirtschaft, Braunschweig (Eds.) (2002) Hinreichende Wirksamkeit von Pflanzenschutzmitteln im ökologischen Landbau sowie Saat- und Pflanzgut für den ökologischen Landbau. [Sufficient Effeciency of Plant Protection Products in Organic Farming and Seeds and Propagation Material for Organic Farming.] Saphir Verlag, D-Ribbesbüttel, Berichte aus der Biologischen Bundesanstalt, Heft, no. 95. Proceedings of Pflanzenschutz im Ökologischen Landbau - Probleme und Lösungsansätze - Fünftes Fachgespräch am 28. Juli 2001 in Kleinmachnow - "Hinreichende Wirksamkeit von Pflanzenschutzmitteln im ökologischen Landbau sowie Saat- und Pflanzgut für den ökologisch.

Bernhard Pallutt, Biologische Bundesanstalt für Land- und Forstwirtschaft, Braunschweig (Ed.) (2000) Unkrautregulierung im ökologischen Landbau. [Weed Control in Organic Farming.] Saphir Verlag, D-Ribbesbüttel, Berichte aus der Biologischen Bundesanstalt, Heft, no. 104. Proceedings of Pflanzenschutz im Ökologischen Landbau - Probleme und Lösungsansätze - Drittes Fachgespräch am 2. November 1999 in Kleinmachnow - "Unkrautregulierung im ökologischen Landbau".

Rasmussen, Ilse A. (Ed.) (1999) Plantebeskyttelse i økologisk jordbrug - rapport fra en workshop. FØJO-rapport, no. 4. Forskningscenter for Økologisk Jordbrug.

Andersen, Mette Klindt (2005) Competition and complementarity in annual intercrops - the role of plant available nutrients. Thesis, The Royal Veterinary and Agricultural University, Copenhagen, Denmark, Department of Soil Science. Samfundslitteraur Grafik, Frederiksberg, Copenhagen.

Andersen, Naja Steen (2005) Selvsået raps gav pænt udbytte. [Self-sown oilseed rape gave high yield.] Økologisk Jordbrug, November 2005, 348, p. 10.

Anon, (2002) Growth and competition model for organic weed control. Horticulture Research International, Wellesbourne.

Anon, (1998) Desk study on the control of weeds in organic arable and horticultural production systems OF0152. Horticulture Research International.

Askegaard, Margrethe (2006) Rodukrudt hører ikke hjemme i økologisk planteproduktion. [Perennial weeds are undesirable in organic agriculture.] Speech at: Kan høj produktion og lav miljøbelastning forenes i økologisk jordbrug?, Forskningscenter Foulum, 22. juni 2006.

Askegaard, Margrethe; Olesen, Jørgen E.; Rasmussen, Ilse A.; Driessen, Eugene; Nielsen, Erling; Thomsen, Henning C.; Bak, Holger and Lindberg, Julie F. (2004) ØKOLOGISKE SÆDSKIFTER TIL PRODUKTION AF KORN. [Organic crop rotations for cereal production.] Grøn Viden, Markbrug (298), pp. 1-20.

Askegaard, Margrethe and Olesen, Jørgen E. (2011) Økologiske planteavlssædskifter – erfaringer og produktivitet. [Organic crop rotations-experiences and productivity.] In: Plantekongres 2011.

Askegaard, Margrethe and Olesen, Jørgen E. (2011) N-udvaskning fra økologiske planteavlssædskifter. [Nitrogen leaching from organic crop rotations.] In: Plantekongres 2011.

Åstrand, Björn (2005) Robust och kostnadseffektiv automatisering av mekanisk ogräsrensning för ekologisk odling av socker. [Robust and cost-effective automation of mechanical weed control for the cultivation of organic grown sugar beets.] In: Ekologiskt lantbruk konferens 22-23 november 2005. Ultuna, Uppsala. Sammanfattningar av föredrag och postrar. SLU. Centrum för uthålligt lantbruk., Federativ tryckeri AB, p. 329.

Bachinger, Johann; Fischer, Holger and Stange, Gerlinde (2007) Neue Anbaustrategien zur Erhöhung der N-Effizenz und zur Reduzierung des Unkrautdruckes im ökologischen Landbau. [Novel cropping methods for increasing the N-efficiency and reducing the weedage in organic farming.] Leibniz-Zentrum für Agrarlandschafts- und Landnutzungsforschung e.V., D-Müncheberg, Institut für Landnutzungssysteme und Landschaftsökologie.

Ball, Dr Bruce C (2006) Mechanical weeding effects on soil structure under organic vegetables. Poster at: Joint Organic Congress, Odense, Denmark, May 30-31, 2006.

Baresel, Jörg Peter; Döring, Thomas F. and Finckh, Maria R. (2012) OSCAR – a new European project on cover crops. Poster at: 12th Congress of the European Society for Agronomy, Helsinki, Finland, 20-24 August 2012.

Belde, Maren (2003) Einfache Modelle zur Vorhersage der Entwicklung der Ackerwildpflanzen im Ökologischen Landbau. [Simple models for predicting the development of arable weeds in organic farming systems.] In: Freyer, Bernhard (Ed.) Ökologischer Landbau der Zukunft: Beiträge zur 7. Wissenschaftstagung zum Ökologischen Landbau, pp. 117-119.

Bellostas, Natalia; Kudsk, Per; Sorensen, Jens Christian and Sorensen, Hilmer (2006) Glucosinolate hydrolysis products for weed control. In: Proceedings of the Joint Organic Congress.

Bellostas, Natalia; Nielsen Kudsk, Per; Sørensen, Jens C. and Sørensen, Hilmer (2006) Glucosinolate hydrolysis compounds for weed control. Poster at: Joint Organic Congress, Odense, Denmark, May 30-31, 2006.

{Project} Pflanzenschonende mechanische Bearbeitung des Pflanzstreifens bei Kernobst und Alternativen: Optimierung der bestehenden Verfahren unter arbeitswirtschaftlichen Gesichtspunkten auf verschiedenen Standorten und Bodentypen. [Mechanical soil treatment in pipfruit growing: Improvement of established methods on different locations and soil-types under consideration of economic aspects.] Runs 2004 - 2006. Project Leader(s): Benduhn, Bastian, Öko-Obstbau Norddeutschland Versuchs- und Beratungsring e.V., D-Jork.

Benduhn, Bastian; Renner, Ute; Rank, Harald and Zimmer, Jürgen (2006) Pflanzenschonende mechanische Bearbeitung des Pflanzstreifens bei Kernobst und Alternativen: Optimierung der bestehenden Verfahren unter arbeitswirtschaftlichen Gesichtspunkten auf verschiedenen Standorten und Bodentypen. [Mechanical soil treatment in pipfruit growing: Improvement of established methods on different locations and soil-types under consideration of economic aspects.] Öko-Obstbau Norddeutschland Versuchs- und Beratungsring e.V., D-Jork.

Berg, Martin; Schenke, Holger; Eisele, Jons; Leisen, Edmund and Paffrath, Andreas (2003) Getreidebau. [Grain growing.] In: Dokumentation 10 Jahre Leitbetriebe Ökologischer Landbau in Nordrhein-Westfalen. Schriftenreihe des Lehr- und Forschungsschwerpunktes „Umweltverträgliche und Standortgerechte Landwirtschaft“, no. 105. Landwirtschaftliche Fakultät der Rheinischen Friedrich-Wilhelms-Universität Bonn, pp. 45-63.

Berner, Alfred; Frei, Robert; Dierauer, Hans-Ulrich; Vogelgsang, Susanne and Mäder, Paul (2005) EFFECTS OF REDUCED TILLAGE, FERTILISATION AND BIODYNAMIC PREPARATIONS ON CROP YIELD, WEED INFESTATION AND THE OCCURRENCE OF TOXIGENIC FUSARIA. Paper at: Researching Sustainable Systems - International Scientific Conference on Organic Agriculture, Adelaide, Australia, September 21-23, 2005. [Unpublished]

Bertelsen, Inger and Rasmussen, Ilse A. (2004) Ukrudtets udvikling i de økologiske sædskifteforsøg. [Development in weed infestation in organic trials with crop rotations.] . Online at <http://www.lr.dk/planteavl/diverse/oekovaerk_ukrudtets_udvikl.htm>.

Bertelsen, Keld K.; Duzel, Jasmin; Nielsen, Søren H. and Jøregensen, Rasmus N. (2011) FruitGrowth - Gasburning in orchards - Environment friendly weed control. Poster at: The 8.th International Horticulture Technology and Machinery Exhibition in Denmark, Årslev, Denmark, June 30 - July 2 .

Bilen, Emre; Özsoy, Nazire; Nazik Bayram, Ceren Ayşe; Ünal, Mehmet; Kaya, Seçkin; Duman, İbrahim; Aksoy, Uygun and Al-Bitar, Lina (2011) Effect of vetch and broccoli in four-year rotation of organic cucurbitaceous and solanaceous vegetables under Mediterranean conditions. Paper at: V Balkan Symposium on Vegetables and Potatoes, Tiran, Albania, 9 - 12 October 2011. [Completed]

Bischoff, Kai; Daniel, Götz; Hochmann, Jochen; Schleuß, Uwe; Seedler, Martin; Süncksen, Uwe; Techow, Edgar; Thaysen, Johannes; Thomsen, Thomas and Untiedt, Henning (editor): Landwirtschaftskammer Schleswig-Holstein, (Ed.) (2003) Aktuelles aus dem Ökologischen Landbau 2002 (Versuchsbericht Ökologischer Landbau) [Current trials and developments in organic agriculture 2002]. Mitteilungen der Landwirtschaftskammer, no. 569/03. Landwirtschaftskammer Schleswig-Holstein.

Bo Melander, Scientist ; Torben Heisel, Scientist and Martin Heide Jørgensen, Scientist (2002) Aspects of steaming the soil to reduce weed seedling emergence. In: Proceedings of the 12th EWRS Symposium 2002, pp. 236-237.

Böhm, Herwart (2009) Anbau von Körnerleguminosen im Ökologischen Landbau. [Cultivation of grain legumes in Organic Farming.] In: Rahmann, Gerold (Ed.) Ressortforschung für den Ökologischen Landbau 2008. Landbauforschung, no. Sonderheft 326. Johann Heinrich von Thünen-Institut - Bundesforschungsinstitut für Ländliche Räume, Wald und Fischerei, Braunschweig, pp. 61-72.

Böhm, Herwart (2005) Ampfer ohne Chemie bekämpfen. Top agrar (3/2005), pp. 100-103.

Böhm, Herwart (2004) Wuzi bekämpft Ampfer maschinell. TASPO - Unabhängige Fachzeitschrift für Produktion, Dienstleistung und Handel im Gartenbau (30), p. 7.

Böhm, Herwart and Finze, Jana (2003) Strategien zur Regulierung von Wurzelunkräutern im ökologischen Landbau - Situationsanalyse und Überprüfung von Ansätzen zur Regulierung der Ampfer-Arten. [Strategies to control perennial weeds in organic farming systems – present state of knowledge and further research requirements: situation analysis and review of attempts to control Rumex spp.] Bundesforschungsanstalt für Landwirtschaft, Institut für ökologischen Landbau.

Böhm, Herwart and Verschwele, Arnd (2004) Ampfer- und Distelbekämpfung im Ökologischen Landbau. [Control of Rumex spp. and Cirsium arvense in organic farming.] In: Rahmann, Gerold and Kühne, Stefan (Eds.) Ressortforschung für den Ökologischen Landbau 2004, Bundesforschungsanstalt für Landwirtschaft (FAL), Sonderhefte der Landbauforschung Völkenrode, no. 273, pp. 39-48.

Böhm, Herwart and Finze, Jana (2004) Überprüfung der Effektivität der maschinellen Ampferregulierung im Grünland mittels WUZI unter differenzierten Standortbedingungen. [Verification of the effectiveness of the mechanical regulation of Rumex spp. with WUZI under different locational conditions.] Bundesforschungsanstalt für Landwirtschaft (FAL), Westerau, Institut für ökologischen Landbau (OEL).

Borgen, Anders (2008) Brug af egen såsæd i økologisk jordbrug. In: Hansen, Jesper (Ed.) Planteavlsberetning. Ecoadvise Gefion, Jyderup, pp. 17-22.

Bos, M. (2010) Biologie van de Jacobskruidaardvlo: Longitarsus jacobaeae: en internationale ervaringen met de beheersing van Jacobskruiskruid. [Biology of the Ragwort Flea Beetle: Longitarsus jacobaeae: and international experiences in the biological control of Ragwort.] Louis Bolk Instituut.

Brockamp, Leona and Bastian, Benduhn (2009) Anbausysteme und Kulturführung im ökologischen Erdbeer- und Strauchbeerenanbau zur Erhöhung der Bestandssicherheit (inkl. Strategien gegen Verunkrautung) - Zwischenbericht 01.04.08 bis 31.03.09. [Cropping Systems and Management of Cultures at the Ecological Cultivation of Strawberries and Bush Berries for Increasing Crop Safety (incl. strategies against weed infestation).] Staatliche Lehr- und Versuchsanstalt für Wein- und Obstbau Weinsberg, Referat Obstbau.

Brockamp, Leona and Benduhn, Bastian (2008) Anbausysteme und Kulturführung im ökologischen Erdbeer- und Strauchbeerenanbau zur Erhöhung der Bestandessicherheit (incl. Strategien gegen Verunkrautung) - Zwischenbericht 10.04.07 bis 31.03.08. [Cropping Systems and Management of Cultures at the Ecological Cultivation of Strawberries and Bush Berries for Increasing Crop Safety (incl. strategies against weed infestation).] Staatliche Lehr- und Versuchsanstalt für Wein- und Obstbau Weinsberg, Referat Obstbau.

Brockamp, Leona; Benduhn, Bastian and Rueß, Franz (2009) Anbausysteme und Kulturführung im ökologischen Erdbeer- und Strauchbeerenanbau zur Erhöhung der Bestandessicherheit (incl. Strategien gegen Verunkrautung) - Verlängerung. [Cropping systems and management of cultures at the ecological cultivation of strawberries and bush berries for increasing crop safety (incl. strategies against weed infestation).] Staatliche Lehr- und Versuchsanstalt für Wein- und Obstbau, D-Weinsberg, Referat Obstbau.

Bundesforschungsanstalt für Landwirtschaft, FAL (2004) Ampfer im Grünland erfolgreich kontrollieren - Ein praktischer Leitfaden für den ökologischen Landbau. .

Cagas, Bohumir and Machac, Radek (2002) The effect of grasses grown for seed in mixture with legumes on the incidence of weeds and soil nitrogen content. In: Powell, Jane and et al., (Eds.) Proceedings of the UK Organic Research 2002 Conference, Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth, pp. 53-54.

Casagrande, Marion; David, Christophe; Valentin Morison, Muriel and Jeuffroy, Marie-Hélène (2007) Indicators of weed competition on Organic Winter Wheat. Poster at: 3rd QLIF Congress: Improving Sustainability in Organic and Low Input Food Production Systems, University of Hohenheim, Germany, March 20-23, 2007.

Castel, Laurie; Sieffert, André; Warlop , Francois and Tchamitchian, Marc (2013) Conception participative de systèmes agricoles associant arbres fruitiers et cultures annuelles. [Participative co-design of innovative agricultural systems mixing fruit trees and annual crops.] Poster at: DINABIO 2013, Tours, France, 10-12 november 2013.

Christiansen, Martin P.; Jensen, Kjeld; Ellekilde, Lars-Peter and Jørgensen, Rasmus N. (2011) Localization in orchards using Extended Kalman Filter for sensor-fusion - A FroboMind component. Paper at: NJF seminar 441, Automation and System Technology in Plant Production CIGR section V & NJF section VII conference, Uppsala, Sweden, June 14-16.

Clerc, Maurice (2011) Maîtriser le rumex : des agriculteurs ayant passé récemment au bio témoignent. Agri, 12.

Çolak, Ayşegül; Çelikel, Gülendam; Ekmekçi, Uğur; Özarslandan, Adem; Aksoy, Eda; Karataş, Ali; Yurtmen, Melike; Sezen, Metin; DEMİRTAŞ, Bekir; Arslan, Rasim; Türkay, Cengiz; Subaşı, Sedat and Öztürk , Cahit (2010) Doğu Akdeniz Bölgesi’nde Örtü Altı Organik Domates Üretiminde Hastalık, Zararlı ve Yabancı Otların Mücadelesinin Yönetimi. [Management of disease pest and weeds on organic tomato grown under greenhouse in Eastern Mediterranean Region.] In: Alay Vural, Ayşen (Ed.) Organik Tarım Araştırma Sonuçları 2005-2010. T.C. Tarım ve Köyişleri Bakanlığı, Ankara Turkey, pp. 253-264.

Cormack, W F (2006) Constraints to the sustainability of a stockless arable rotation. Paper at: What can organic farming deliver? COR 2006, Heriot-Watt University, Edinburgh, 18-20 September 2006. [Unpublished]

Cormack, William F (2002) Effect of mowing a legume fertility-building crop on shoot numbers of creeping thistle (Cirsium arvense (L.) Scop.). In: Powell, Jane and et al., (Eds.) Proceedings of the UK Organic Research 2002 Conference, Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth, pp. 225-226.

Davies, D H Ken; Hoad, Steve and Boyd, Laura (2002) WECOF: A new project developing enhanced weed control through improved crop and plant architecture. In: Powell, Jane and et al., (Eds.) Proceedings of the UK Organic Research 2002 Conference, Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth, pp. 299-302.

Davies, D.H.K. and Welsh, J.P. (2002) Weed control in organic cereals and pulses. In: Younie, D.; Taylor, B.R.; Welch, J.M. and Wilkinson, J.M. (Eds.) Organic cereals and pulses. Papers presented at conferences held at the Heriot-Watt University, Edinburgh, and at Cranfield University Silsoe Campus, Bedfordshire, 6 and 9 November 2001. Chalcombe Publications, chapter 5, pp. 77-114.

Davies, G; Turner, R; Bond, B and Gibbon, D (2006) Knowledge development for organic systems: An example of weed management. In: Atkinson, C; Ball, B; Davies, D H K; Rees, R; Russell, G; Stockdale, E A; Watson, C A; Walker, R and Younie, D (Eds.) Aspects of Applied Biology 79, What will organic farming deliver? COR 2006, Association of Applied Biologists, pp. 107-110.

Davies, Dr Gareth; Turner, Dr Becky and Bond, Dr Bill (2006) Organic Weed Management Website. . Online at <http://www.organicweeds.org.uk>.

Dibet, Audrey; Hauggaard-Nielsen, Henrik; Kasyanova, Elena; Ruske, Rachel; Gooding, Mike; Pristeri, Aurelio; Monti, Michele; Dahlmann, Christoph; von Fragstein, Peter; Ambus, Per; Jensen, Erik and Crozat, Yves (2006) Pea-barley intercropping for the control of weeds in European organic cropping systems. Poster at: Joint Organic Congress, Odense, Denmark, May 30-31, 2006.

Dierauer, Hansueli (2000) Abflammen. Merkblatt. Forschungsinstitut für biologischen Landbau, Frick.

Dierauer, Hansueli; Ebert, Ulrich and Jorek, Bettina (2004) Ackerkratzdistel - Erfolgreich regulieren im ökologischen Landbau. [Thistle - how to regulate them on organic farming.] Merkblatt. Forschungsinstitut für biologischen Landbau (FiBL), CH-Frick.

Dierauer, Hansueli; Kranzler, Andreas; Uehlinger, Gabriela and Lindenthal, Thomas (2004) Ackerkratzdistel. Wie regulieren im Biobetrieb? [Thistles - how to manage them in organic farming.] Merkblatt. Forschungsinstitut für biologischen Landbau, Frick.

Dierauer, Hansueli (2013) De l’eau chaude sous pression contre les rumex. bioactualités, 4/2013, pp. 10-11.

Dierauer, Hansueli (2013) Mit Heisswasser und Hochdruck gegen Blacken. bioaktuell, 4/13, pp. 8-9.

Dierauer, Hansueli (2012) Hackgeräte: Technik und Einsatzzeitpunkt sind entscheidend. bioaktuell, 1/2012, pp. 10-11.

Dierauer, Hansueli and Böhler, Daniel (2012) Direktsaat Mais im Biolandbau. Zwischenbericht. Forschungsinstitut für biologischen Landbau (FiBL), CH Frick.

Dierauer, Hansueli; Hermle, Martin; Lüscher, Andreas; Schaller, Alfred and Thalmann, Hans (2007) Blackenregulierung. FiBL-Merkblatt. Forschungsinstitut für biologischen Landbau (FiBL), CH-Frick.

Dierauer, Hansueli; Hermle, Martin; Lüscher, Andreas; Schaller, Alfred and Thalmann, Hans (2007) Maîtrise du rumex. Fiche technique. Institut de recherche de l'agriculture biologique (FiBL), CH-Frick.

Donnelly, Eric; Robertson, Jamie and Robinson, David (2002) Potential and historical Uses for bracken (Pteridium aquilinum (L.) Kuhn) in organic agriculture. In: Powell, Jane and et al., (Eds.) Proceedings of the UK Organic Research 2002 Conference, Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth, pp. 255-256.

Döring, Thomas F.; Winkler, Louisa and Fradgley, Nick (2012) Oat variety characteristics for suppressing weeds. Organic Research Centre Bulletin, December 2012 (111), pp. 6-7.

Drews, Sylvia; Juroszek, Peter; Neuhoff, Daniel and Köpke, Ulrich (2003) Konkurrenzkraft verschiedener Weizensorten unter dem Einfluss von Reihenabstand und Drillrichtung. [Competitiveness of winter wheat cultivars against weeds affected by row width and drilling direction.] In: Freyer, Bernhard (Ed.) Ökologischer Landbau der Zukunft - Beiträge zur 7. Wissenschaftstagung zum Ökologischen Landbau, pp. 105-109.

Dubois, David; Mäder, Paul; Fliessbach, Andreas and Strasser, Fredi (2003) Auswirkungen reduzierter Hofdüngergaben im Bioackerbau. [Effects of reducing farm yard manure in organic arable farming.] Bioaktuell (9/03), pp. 6-7.

Eis, Birgit; Benduhn, Bastian; Pfeiffer, Barbara and Rueß, Franz (2006) Anbausysteme und Kulturführung im ökologischen Erdbeer- und Strauchbeerenanbau zur Erhöhung der Bestandessicherheit (incl. Strategien gegen Verunkrautung). [Cropping systems and management of cultures at the ecological cultivation of strawberries and bush berries for increasing crop safety (incl. strategies against weed infestation).] Staatliche Lehr- und Versuchsanstalt für Wein- und Obstbau, D-Weinsberg, Referat Obstbau.

Elekçioğlu, Naime Z.; Kara, Huriye; Pala, Hülya; Temel, Nazife; Özarslandan, Adem; Aras, Yusuf; Arslan, Rasim and Balki, Kemal (2010) Doğu Akdeniz Bölgesi’nde Organik Turunçgil Üretiminde Hastalık, Zararlı ve Yabancı Otların Mücadelesinin Yönetimi. [Management of disease pest and weeds on organic citrus production in Eastern Mediterranean Region.] In: Alay Vural, Ayşen (Ed.) Organik tarım Araştırma Sonuçları 2005-2010. T. C. Tarım ve Köyişleri Bakanlığ , Ankara Turkey, pp. 239-252.

Elers, Barbara (2001) Einfluß der Sorte und Bestandesdichte auf Ertrag und Unkrautbesatz bei Futtererbsen. [Influence of variety and plant density of peas on yield and weed growth.] In: Reents, Hans Jürgen (Ed.) Von Leit-Bildern zu Leit-Linien: Beiträge zur 6. Wissenschaftstagung zum Ökologischen Landbau, Freising, Verlag Dr. Köster, Berlin.

Elmholt, S. and Holmstrup, M. (2003) Livet i jorden. In: Holmstrup, M. (Ed.) Økologisk landbrug og naturen - gør økologisk landbrug en forskel for natur og miljø?. Miljøbiblioteket, no. 1. Gads Forlag, chapter 2, pp. 21-31.

Engellyst, O.B. and Madsen, K.H. (2013) Slätte-Ekodag - et besøg værd. Økologisk Nyhedsbrev, 1 September 2013, 7 (Sept.), pp. 15-16.

Finze, Jana and Böhm, Herwart (2004) Ampfer erfolgreich kontrollieren. [Dock: Successful control.] Bioland (1), pp. 24-25.

Finze, Jana and Böhm, Herwart (2003) Strategien zur Ampferbekämpfung im Grünland. [Strategies of dock control in grassland.] In: Freyer, Bernhard (Ed.) Ökologischer Landbau der Zukunft - Beiträge zur 7. Wissenschaftstagung zum Ökologischen Landbau, Universität für Bodenkultur Wien - Institut für ökologischen Landbau, pp. 603-604.

Fradgley, Nick (2014) Competitive oats for integrated weed management and organic rotations. Poster at: Cereals 2014, Duxford, Cambridge, 11th June 2014.

Fradgley, Nick (2013) Oat varieties for organic systems. Poster at: Cereals 2013 , Boothby Graffoe, Lincolnshire, 12-13 June . [Completed]

Fradgley, Nick; Creissen, Henry; Howlett, Sally; Pearce, Helen and Girling, Robbie (2014) Applications of crop competitive ability in winter oats (Avena sativa L.). Poster at: Diversity strategies for organic and low input agricultures and their food systems, Nante, France, 7th - 9th July 2014.

Fradgley, Nick; Wolfe, Martin; Howlett, Sally; Creissen, Henry and Girling, Robbie (2014) Selecting winter wheat lines from a composite cross population. Poster at: SOLIBAM Congress 2014, Diversity strategies for organic and low input agricultures and their food system, Nantes, France, 7th - 9th July 2014.

Frost, David (2003) Improving knowledge of pest and weed control in organic crop production in Wales. Organic Centre Wales.

Gerlach, Florian (2003) Übersicht über Homepages und Dokumentdatenbanken der "Arbeitsgruppe Versuchsansteller im Ökologischen Landbau" im "Verband der Landwirtschaftskammern e.V." (VLK) und ihrer Mitglieder. [Chart of websites and online-databases containing reports by the "working group of experimental stations for organic agriculture" and its members.] Working paper. [Unpublished]

Glemnitz, Michael; Radics, László and Mackensen, Kerstin (2007) Weed Management in Organic Farming in the New EU Member States and the Acceding Countries - Status Quo and Main Limitations. Poster at: 3rd QLIF Congress: Improving Sustainability in Organic and Low Input Food Production Systems, University of Hohenheim, Germany, March 20-23, 2007.

Graglia, Enrico (2004) Erfaringer med tidselbekæmpelse på Flakkebjerg. In: Månedmagasinet Mark, 1, pp. 57-58.

Graglia, Enrico (2003) Bekæmpelse af Ager-Tidsel i sædskiftet. Aktuel Økologi, September 2003 (7), pp. 4-5.

Graglia, Enrico and Melander, Bo (2004) Regulering af rodukrudt. .

Graglia, Dr. Enrico (2003) Ager Tidsel kan bekæmpes uden kemi. Landbrugsavisen, August 2003, p. 28.

Graglia, Scientist Enrico (2003) Succesfuld bekæmpelse af Ager-Tidsel - uden kemi. Nyhedsbrevet Danmarks JordbrugsForskning, July 2003 (3), pp. 1-2.

Graglia, Scientist Enrico and Melander, Senior Scientist Bo (2003) Tidslerne får det glatte lag. Økologisk Jordbrug, June 2003 (292), p. 15.

Griepentrog, Hans W. and Nørremark, Michael (2004) Seed mapping of sugar beet to guide weeding robots. Poster at: 6th Workshop of the EWRS Working Group 'Physical and Cultural Weed Control', Lillehammer, Norway, 8th March 2004.

Griepentrog, Hans W. and Nørremark, Michael (2002) Positionering af frø og afgrøderækker med RTK-GPS. [Referencing of crop plants and rows by RTK-GPS.] In: Proceedings, Landbruget Rådgivningscenter, Skejby, pp. 51-52.

Grimsby, Lars Kåre (2005) Measurement of microbial numbers, activity, biomass and diversity as a response to different methods of treatment of Tanzanian soil. Thesis, Norwegian University of Life Sciences, Department of Chemistry, Biotechnology and Food sciences. . [Unpublished]

Gruber, Harriet and Titze, Andreas (2008) Einfluss einer Kainit-Düngung auf Unkrautflora und Ertragsbildung bei Sommerweizen im ökologischen Landbau. [Influence of fertilizer "Kainit fein" on weeds and yield of summer wheat.] Landesforschungsanstalt für Landwirtschaft und Fischerei Mecklenburg-Vorpommern, Institut für Acker- und Pflanzenbau.

Grundy, Andrea C and Turner, Rebecca J (2002) Horticultural weed control in organic systems – a modelling approach. In: Powell, Jane and et al., (Eds.) Proceedings of the UK Organic Research 2002 Conference, Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth, pp. 295-298.

Grøndal, Henrik; Graglia, Enrico and Jensen, Rikke K. (2003) Har Ager-Svinemælk og Ager-Tidsel skudhvile? In: DJF rapport - Markbrug (89), pp. 357-358.

Gundersen, Hanne; Rasmussen, Jesper and Nørremark, Michael (2006) TOLERANCE OF CEREALS TO POST- EMERGENCE WEED HARROWING. In: Proceedings from AFPP (on CD-rom), Association française de protection des plantes (AFPP).

Haas, Guido (2003) Grundwasserschutz im Organischen Landbau: Untersaaten in Kartoffeln zur Minderung hoher Restnitratmengen im Boden. Schriftenreihe Institut für Organischen Landbau - Universität Bonn. Verlag Dr. Koester, Berlin.

Häberle, Annette; Pekrun, Carola; Claupein, Wilhelm; Köhler, Stefan; Stahr, Karl and Römheld, Volker (2003) Untersuchungen zur Wirkung einer einmalig variierten Bodenbearbeitung auf Ertragsbildung, Verunkrautung und Nitratauswaschung unter den Produktionsbedingungen des Ökologischen Landbaus. [Studies on short-time effects of tillage on yields, weeds and nitrate leaching in organic farming.] In: Mitteilungen der Gesellschaft für Pflanzenbauwissenschaften, Verlag Günter Heimbach, Stuttgart, 14, pp. 286-287.

Häberle, Annette; Pekrun, Carola; Claupein, Wilhelm; Prade, Christoph; Thierfelder, Christian and Stahr, Karl (2004) Untersuchungen zu den Auswirkungen im ersten und zweiten Folgejahr nach einer einmalig variierten Bodenbearbeitung auf Ertragsbildung, Verunkrautung und Nitratauswaschung unter ökologischen Produktionsbedingungen. [Studies of varied tillage in one year on yields, weeds and nitrate leaching in the two consecutive years in organic farming.] In: Mitteilungen der Gesellschaft für Pflanzenbauwissenschaften, Verlag Günter Heimbach, Stuttgart, 16, pp. 69-70.

Hannukkala, Asko; Lehtinen, Ari and Lindqvist, Bengt (2004) Kontroll av potatisbladmögel inom ekologisk produktion. Paper at: "Uppdatera dina kunskaper inom ekologin" : ekoseminar i S:t Michel 28.7.2004.

Hansen, Preben Klarskov (2007) Using multi-temporal sensor-based measurements in early growth stages to estimate potential yield of spring barley (Hordeum vulgare L.) varieties in competition with weeds. Working paper, Department of Integrated Pest Management, University of Aarhus, Faculty of Agricultural Sciences. [Unpublished]

Hansen, Preben Klarskov (2006) Beregning af konkurrenceindeks (KI). [Calculation of competitive index (KI).] In: Deneken, Gerhard and Pedersen, Jon Birger (Eds.) Sortsforsøg 2006. Korn bælgsæd og olieplanter. Danmarks JordbrugsForskning og Dansk Landbrugsrådgvning, Landcentret, Planteavl, 7, 21, 27-28 & 31.

Hansen, Preben Klarskov (2005) Forskelle i bygsorters tolerance overfor ukrudtsharvning. [Differences in tolerance to weed harrowing by spring barley varieties.] FØJOenyt, 2.

Hansen, Preben Klarskov (2005) Beregning af konkurrenceindeks (KI). [Calculation of competitive index (KI).] In: Deneken, Gerhard and Pedersen, Jon Birger (Eds.) Sortsforsøg 2005. Korn bælgsæd og olieplanter. Danmarks JordbrugsForskning og Dansk Landbrugsrådgvning, Landcentret, Planteavl, 7, 21 & 31.

Hansen, Preben Klarskov (2005) Suggested outline of the thesis "Crop-Weed interactions determined by sensor techniques"(COMSENS). Paper at: Midtterm Seminar, KVL, 25. October 2005.

Hansen, Preben Klarskov (2005) Tolerance to weed harrowing in spring barley genotypes. In: Proceedings from the 13th European Weed Research Society (EWRS) Symposium, CD-ROM.

Hansen, Preben Klarskov (2004) Beregning af konkurrenceindeks i vinterhvede og vårbyg (KI). [Calculation of competitive index for winter wheat and spring barley.] Danmarks JordbrugsForskning og Dansk Landbrugsrådgivning, Landscentret, Planteavl.

Hansen, Preben Klarskov (2004) Important values in the PhD-project "Crop-Weed interaction determined by sensor techniques (COMSENS)" and the project "Characteristics of spring barley varieties for organic farming (BAR-OF)". Danisk institute og Agricultural Sciences, Department for Crop Protection.

Hansen, Preben Klarskov (2003) Beregning af konkurrenceindeks (KI). [Calculation of competitive index (KI).] In: Deneken, Gerhard and Pedersen, Jon Birger (Eds.) Sortsforsøg 2003. Korn bælgsæd og olieplanter. Danmarks JordbrugsForskning og Dansk Landbrugsrådgvning, Landcentret, Planteavl, p. 7.

Hansen, Preben Klarskov; Kristensen, Kristian and Rasmussen, Ilse A. (2005) Forsøgsbeskrivelse af specialforsøg BAROF WP2 2005. [Description of the specieal field experiment BAROF WP2 2005.] Danish Institute of Agricultural Sciences, Department of Integrated Pest Management.

Hansen, Preben Klarskov; Kristensen, Kristian and Rasmussen, Ilse A. (2004) Forsøgsbeskrivelse af specialforsøg BAR-OF WP2 2004. Danmarks JordbrugsForskning, Afdeling for Plantebeskyttelse.

Hansen, Preben Klarskov; Kristensen, Kristian and Willas, Jakob (2006) Forskellige sorters konkurrenceevne overfor ukrudt. [Competitiveness in different varieties against weeds.] In: Sammendrag af indlæg 3. Danske Plantekongres. Herrning 10.-11. Januar 2006, Danmarks JordbrugsForskning & Landcentret, pp. 342-343.

Hansen, Preben Klarskov and Rasmussen, Ilse A (2005) Sorters vekselvirkning med miljøet, betydning af mekanisk ukrudtsbekæmpelse. [Genotype*Environment interaction, importance of mechanical weed control.] Speech at: BAR-OF netværksmøde, Forskningscenter Risø, 14. december 2005.

Hansen, Preben Klarskov and Rasmussen, Ilse A. (2003) Design og sortsvalg i specialforsøg BAROF-WP2 – Ukrudtskonkurrence. Danish Institute of Agricultural Sciences, Dept. of Crop Protection.

Hansen, Preben Klarskov; Rasmussen, Ilse A.; Holst, Niels and Andreasen, Christian (2006) Tolerance to weed harrowing in four spring barley varieties. [Submitted]

Hansen, Preben Klarskov; Rasmussen, Ilse A.; Kristensen, Kristian and Willas, Jakob (2004) Forslag til forsøgsdesign for WP1 2004 og 2005 på Forskningscenter Flakkebjerg. [Proporsal of experimental desing for WP1 in 2004 and 2005 at Research Centre Flakkebjerg.] Danmarks JordbrugsForskning, Afdeling for Plantebeskyttelse.

Hansen, Jesper (2013) Rækkedyrkning herunder erfaringer/forsøg med Cameleon. [Row cultivation. Experience/experiment with Cameleon.] In: Økologisk Planteavlsberetning 2013. Økologisk Rådgivning, pp. 8-12.

Hansen, Lisbeth F. (2013) Pas på skræpperne kommer! [Beware, sorrel coming!] In: Økologisk Planteavlsberetning 2013. Økologisk Rådgivning, pp. 16-19.

Hansen, Preben Klarskov and Rasmussen, Ilse A. (2010) Nye resultater med bekæmpelse af følfod og tidsler. [New results on control of coltsfoot and canadian thistle.] In: Videncentret for Landbrug, Det Jordbrugsvidenskabelige Fakultet Aarhus Universitet (Eds.) Sammendrag af indlæg Plantekongres 2010 12.-14. januar i Herning Kongrescenter, pp. 328-329.

Häseli, Andreas; Weibel, Franco; Brunner, Hans and Müller, Werner (2000) Biologischer Obstbau auf Hochstämmen. FiBL-Merkblatt. Forschungsinstitut für biologischen Landbau (FiBL), CH-Frick.

Hatcher, Scientist Paul and Melander, Scientist Bo (2004) Combining physical and cultural weed control with biological methods – prospects for integrated non-chemical weed management strategies. In: Proceedings of the 6th EWRS on Physical and Cultural Weed Control, p. 30.

Hermle, Martin; Schaller, Alfred; Thalmann, Hans and Dierauer, Hansueli (2009) Ampferregulierung - Vorbeugende Möglichkeiten ausschöpfen. FiBL-Merkblatt. FiBL, Bioland Beratung, KÖN, Bio Austria.

Hermle, Martin; Schaller, Alfred; Thalmann, Hans and Dierauer, Hansueli (2009) Ampferregulierung - Vorbeugende Möglichkeiten ausschöpfen. FiBL-Merkblatt. FiBL, Bioland Beratung, KÖN und Bio Austria, CH-Frick, D-Mainz, D-Visselhövede und AT-Linz.

Holst, N.; Rasmussen, I.A. and Bastiaans, L. (2005) Field weed population models: a review of approaches and application domains. In: Bàrberi, P.; Bastiaans, L.; Christensen, S.; Fernandez-Quintanilla, C.; Froud-Williams, B.; Grundy, A.; Hatcher, P.; Kudsk, P.; Marshall, J.; Melander, B.; Quadranti, M.; Tei, F.; Thompson, A. and Vurro, M. (Eds.) Proceedings of the 13th EWRS Symposium, Bari, Italy, 19-23 June 2005, European Weed Research Society (EWRS), pp. 1-2.

Hopkins, Mr Alan (1999) Cultural methods for controlling docks in organically farmed grassland (extension 1998-99) (OFT0115T). Institute of Grassland and Environmental Research.

Horneburg, Bernd (2011) Organic Plant Breeding: Achievements, Opportunities, and Challenges. 17th IFOAM Organic World Congress 2011 (OWC), Organic is Life, Namyangju City, Gyeonggi Province, Republic of Korea, September 26 to October 5, 2011. [Completed]

Hunger, Stefan; Pekrun, Carola and Claupein, Wilhelm (2001) Unkrautbekämpfung durch Stoppel-bearbeitung – Ergebnisse aus zwei Jahren Praxisversuche im Ökologischen Landbau. [Weed management by stubble tillage - results of two years of on-farm experimentation in organic farming.] In: Gesellschaft für Pflanzenbauwissenschaften, (Ed.) 44. Jahrestagung (27.-29.09.) : Kurzfassungen der Vorträge und Poster, Mitteilungen der Gesellschaft für Pflanzenbauwissenschaften, no. 13, pp. 172-173.

Hyvönen, Terho (2010) Weed mapping activities in Scandinavia and Finland. Paper at: The Weed mapping working group, Kaposvár, July 12th 2010.

Hyvönen, Terho; Luoto, Miska and Uotila, Pertti (2009) The change in the distribution of arable weeds in Europe as a consequence of climate change. Paper at: Ecology in a changing climate : The 10th International Congress of Ecology, Brisbane, Australia, 16-21 August 2009.

J. P., Welsh; N. D., Tillett; M., Home and J. A., King (2002) A review of knowledge: inter-row hoeing & its associated agronomy in organic cereal & pulse crops. Elm Farm Research Centre.

Jalli, H. (2006) No-till cultivation suppresses broad-leaved weeds but favours grasses. In: Book of abstracts, Nordic Association of Agricultural Scientists, 2 (4), NJF Report, p. 20.

Jalli, Heikki; Laine, Antti and Känkänen, H. (2006) No-till cultivation suppresses broad-leaved weeds but favours grasses. In: Extended abstracts, Nordic Association of Agricultural Scientists, pp. 72-77.

Jansen, Bernhard and Bogdán, Adrienne (editor): Internationales Zentrum für den ökologischen Landbau Mittel- und Osteuropas e.V., EkoConnect (Ed.) (2010) Landwirtschaftliche Flächen an ökologischen Landbau verpachten - Fragen und Antworten. [Renting out agricultural land for organic agriculture - questions and answers.] Eigenverlag, D-Dresden.

Jensen, Erik Steen; Hauggaard-Nielsen, Henrik; Kinane, Julia; Andersen, Mette Klindt and Jørnsgaard, Bjarne (2005) Intercropping – The practical application of diversity, competition, and facilitation in arable and organic cropping systems. In: Köpke, U.; Niggli, U.; Neuhoff, D.; Lockeretz, W. and Willer, H. (Eds.) Researching Sustainable Systems 2005. Proceedings of the First Scientific Conference of the International Society of Organic Agricultural Research (ISOFAR)., ISOFAR, Bonn, Germany, pp. 22-25.

Jobst, Florian; Demmel, Markus; Heiles, Eberhard; Salzeder, Georg and Urbatzka, Peer (2012) Optimierung der Beikrautregulierung im ökologischen Sojaanbau. In: Wiesinger, Klaus and Cais, Kathrin (Eds.) Angewandte Forschung und Beratung für den ökologischen Landbau in Bayern, Bayerische Landesanstalt für Landwirtschaft, Freising, Tagungsband - Schriftenreihe der Bayerischen Landesanstalt für Landwirtschaft, no. 4/2012, pp. 63-67.

Jørgensen, M.H.; Kristensen, E.F.; Kristensen, J.K. and Melander, B. (2004) Thermal Band Heating for Intra-Row Weed Control. In: De Baerdemaaker, Josse (Ed.) AgEng 2004, Leuven, Belgium. Book of Abstracts, ISBN 90-76019-258. Paper on CD 287, 8 pp, Technological Institute, Belgium.

Jørgensen, M.H.; Kristensen, J.K.; Melander, B. and Kristensen, E.F. (2004) Thermal Band Heating for Intra-Row Weed Control. Not submitted. [Completed]

Jørgensen, Martin H. and Melander, Bo (2004) Stribedampning virker mod ukrudt. FØJOenyt (3).

Jørgensen, Rasmus N. (2011) Leg med store perspektiver. Land & Liv, June 2011 (25), p. 13.

Kakriainen-Rouhiainen, S.; Väisänen, J.; Vanhala, P. and Lötjönen, T. (2004) Terminating ley with mid-summer bare fallow controls Elymus repens. In: Proceedings, European Weed Research Society, pp. 181-182.

Kakriainen-Rouhiainen, Sanna (2004) Mjölktisteln under kontroll. Paper at: "Uppdatera dina kunskaper inom ekologin": ekoseminar, S:t Michel, Finland, 28.7.2004.

Kakriainen-Rouhiainen, Sanna; Väisänen, Jaana; Vanhala, Petri and Lötjönen, Timo (2003) Mid-summer bare fallow effective in controlling perennial weeds. Paper at: Nordic agriculture in global perspective: NJF's 22nd congress, Turku, Finland, July 1-4, 2003.

Kivijärvi, Pirjo (2006) Weed management with different mulches under organic strawberry production. In: NJF Report, Nordic Association of Agricultural Scientists, 2 (10), p. 35.

Kiær, Lars; Skovgaard, Ib and Østergård, Hanne (2006) Meta-analysis is a powerful tool to summarize variety mixture effects - exemplified by grain yield and weed suppression of spring barley. In: Østergård, H. and Fontaine, L. (Eds.) Cereal crop diversity: Implicatons for production and products, ITAB, Paris, France, pp. 49-52.

Kloepfer, Dr. Florian and Pain, Johannes (2003) Bodenbearbeitung und Beikrautregulierung im ökologischen Landbau. [Soil cultivation and weed controll for organic farming.] KTBL-Schrift 416. KTBL.

Koesling, Matthias (1997) Ikke så mens du høster. Hummelposten, 3, pp. 24-25.

Koesling, Matthias and Serikstad, Grete Lene (2007) Plantevern i vanlig og økologisk landbruk. Bioforsk TEMA, no. 12. Bioforsk, Bioforsk Økologisk.

Kolbe, Hartmut and Petzold, Winfried (2002) Leistungsvergleich neuer Hackgeräte sowie Einsatzhinweise [Comparison of the performance of novel mechanical hoes and remarks on their usage]. SÖL-Berater-Rundbrief (1), pp. 41-46.

Kolbe, Dr. Hartmut and Heinig, Caterina (2006) Das Öko-Feld der Versuchsstation Roda (Sachsen). [The organic field of the experimental station of Roda (Saxony).] Poster at: Vortragsveranstaltung mit Feldtag „Forschung zum ökologischen Landbau in Sachsen“, Roda, 14. 06. 2006. [Unpublished]

Koller, Martin; Vieweger, Anja; Lüscher, Samuel and Lichtenhahn, Martin (2006) Ertrag und Qualität von ökologisch angebauten Zwiebeln in drei Anbausystemen (Direktsaat, Kultur über Steckzwiebeln bzw. Jungpflanzen) unter besonderer Berücksichtigung der Unkrautregulierung. In: Piontek, Eva and Gabbert, Andrea (Eds.) Tagungsband des Bundesverband der Hochschulabsolventen/Ingenieure Gartenbau und Landschaftsarchitektur e.V. und Deutsche Gartenbauwissenschaftliche Gesellschaft e.V., p. 189.

Koller, Martin (2011) Optimierte Beikrautbekämpfung im Zwiebelanbau. In: Wilhem, Birgit and Hensel, Oliver (Eds.) Landtechnische Lösungen zur Beikrautregulierung im Ökolandbau. Deutsches Institut für Tropische und Subtropische Landwirtschaft (DITSL) GmbH, D-Witzenhausen, chapter 3.4, pp. 113-117.

Koller, Martin (2011) Sumpfkresse – ein lästiges Wurzelunkraut breitet sich aus. [Creeping Yellowcress (Rorippa sylvestris)- an important root weed.] ÖKOmenischer Gärtnerrundbrief, 2011, 1, pp. 17-18.

Koller, Martin; Lichtenhahn, Martin and Six, Roswitha (2007) Biologischer Anbau von Zwiebeln. FiBL-Merkblatt. FiBL, Bioland, KÖN und Bio Austria, CH-Frick, D-Mainz, D-Visselhövede und A-Wien.

Koller, Martin and Total , René (2011) Beetstriegel in Pflanzkulturen. [Harrowing in planted vegetable crops.] ÖKOmenischer Gärtnerrundbrief, 2011, 2, p. 45.

Koller, Martin and Total , René (2011) Erfahrungsbericht: Beetstriegel. In: Landtechnische Lösungen zur Beikrautregulierung im Ökolandbau. Deutsches Institut für Tropische und Subtropische Landwirtschaft (DITSL) GmbH, D-Witzenhausen, chapter 3.3, pp. 109-112.

Kompetenzzentrum Ökolandbau, Niedersachsen (Hrsg.) (2006) Versuche im ökologischen Gemüsebau in Niedersachsen 2005 - Ergebnisse, Analysen, Empfehlungen. [Experiments in organic vegetable production in Lower Saxony in 2005.] Kompetenzzentrum Ökolandbau Niedersachsen GmbH, D-Visselhövede.

Kompetenzzentrum Ökolandbau, Niedersachsen (Hrsg.) (2004) Versuche im ökologischen Gemüsebau in Niedersachsen 2003 - Ergebnisse, Analysen, Empfehlungen. [Experiments in organic vegetable production in Lower Saxony in 2003.] .

Kompetenzzentrum Ökolandbau, Niedersachsen (Hrsg.) (2003) Versuche im niedersächsischen Öko-Gemüsebau 2002 - Ergebnisse, Analysen, Empfehlungen. [Experiments in organic vegetable production in Lower Saxony in 2002.] Kompetenzzentrum Ökolandbau Niedersachsen.

Kompetenzzentrum Ökolandbau Niedersachsen, (2007) Versuche im ökologischen Gemüsebau in Niedersachsen 2006 - Ergebnisse, Analysen, Empfehlungen. [Experiments in organic vegetable production in Lower Saxony in 2006.] Kompetenzzentrum Ökolandbau Niedersachsen GmbH, D-Visselhövede.

Kompetenzzentrum Ökolandbau Niedersachsen, (2005) Versuche im ökologischen Gemüsebau in Niedersachsen 2004 - Ergebnisse, Analysen, Empfehlungen. [Experiments in organic vegetable production in Lower Saxony in 2004.] .

Kristensen, E.F and Kristensen, J.K (2005) Intra-Row Weed Control by use of Band Steaming. In: Sharping Sustainable System, CD Conference Proceedings.

Kristensen, Erik Fløjgaard; Jørgensen, Martin Heide and Kristensen, Jens Kristian (2005) Intra-Row Weed Control by use of Band Steaming. In: NJF Report, 1 (1), pp. 185-187.

Kristensen, Erik Fløjgaard; Kristensen, Jens Kristian and Melander, Bo (2006) Rækkedampning, effekter og økonomi. [Band steaming, effect and economy.] In: Økologi-kongres 2006 - Indblik og udsyn. Kongresbilag, pp. 74-75.

Kristensen, Erik Fløjgaard; Melander, Bo and Nørremark, Michael (2010) New optimized technique for mechanical control of Elymus repens. Paper at: AgEng 2010. International Conference on Agricultural Engineering, Clemont Ferrand, France, 6-8 September, 2010.

Kristiansen, P. (2006) Brassicas limited in weed control. Australian Organic Journal, Winter, pp. 40-41.

Kristiansen, P.; Sindel, B.M.; Jessop, R. and Cerrai, D. (2005) Brassica cover crops for weed control in organic vegetable production. Paper at: Shaping Sustainable Systems. Proceedings of the 15th IFOAM Organic World Congress, Adelaide Australia, 20-23 September 2005.

Kristiansen, Paul Erik (2003) Sustainable Weed Management in Organic Herb and Vegetable Production. Thesis, University of New England, School of Rural Science and Agriculture. . [Unpublished]

Kuchtová, Perla; Hajkova, Miroslava; Dvorak, Petr; Plachka, Eva and Kazda, Jan (2012) Jak dělat ekologický mák za dvojnásobnou cenu. [How to produce organic poppy seed for twice the price.] In: Vašák, Jan; Kosek, Zdeněk and Cihlář, Pavel (Eds.) Sdružení Český mák informuje. 11. Makový občasník // Association Czech Poppy Seed informs. 11 th Poppy Seed Newsletter, CULS Prague, Dpt. of Crop Production, Prague, 11 (1), Sdružení Český mák informuje.// Association Czech Poppy Seed informs., no. 11, pp. 29-37.

Kuchtová, Perla; Mičák, Libor and Škeřík, Josef (2004) Možnosti ekologického pěstování řepky. [Possibilities of ecological growing of oilseed rape.] In: 21. vyhodnocovací seminář SVŘ SVS, 2004 (1).

Kuchtová, Perla; Nerad, Daniel; Škeřík, Josef and Kazda, Jan (2008) Možnosti intenzifikace v ekologické pěstitelské technologii ozimé řepky. [Possibilities of intensifrcation in ecological growing technology of winter rape.] In: Bečka, David (Ed.) Prosperující olejniny 2008, Zemědělská společnost při ČZU v Praze - pobočka FYTO, Praha, 2008 (1), pp. 103-109.

Kuchtová, Perla; Nerad, Daniel; Škeřík, Josef; Kazda, Jan and Mičák, Libor (2006) Pokusy s ekologickým pěstováním řepky ozimé v roce 2005/2006. [Trials at ecological cultivation of winter rapeseed in 2005/2006.] In: 23. vyhodnocovací seminář Systém výroby řepky, Systém výroby slunečnice, Svaz pěstitelů a zpracovatelů olejnin, Praha, 23 (1), pp. 162-169.

Kuchtová, Perla; Nerad, Daniel; Škeřík, Josef; Mičák, Libor; Kazda, Jan and Baranyk, Petr (2007) Výsledky pokusů s ekologickým pěstováním řepky v roce 2006-2007. [Results of trials with ecological growing of rapeseed in 2006-2007.] In: 24. vyhodnocovací seminář Systém výroby řepky, Systém výroby slunečnice, Svaz pěstitelů a zpracovatelů olejnin, 2007 (1), pp. 351-357.

Kuht, Jaan; Luik, Anne; Eremeev, Viacheslav; Talgre, Liina and Tein, Berit (2012) Mulla umbrohuseemnete varu mahepõllul. [Weed seed bank in soil under organic management.] In: Metspalu, Luule and Luik, Anne (Eds.) "Teaduselt mahepõllumajandusele", pp. 56-58.

Laber, H.; Baumgarten, B.; Stützel, H. and Wonneberger, C. (1999) Abflammen von Säzwiebeln im Nachauflauf. [Postemergence flaming of annual onions.] Gemüse, 35 (5), pp. 312-314.

Laber, Hermann (2009) Ertragsverluste in Öko-Gemüseerbsen lagen in Abhängigkeit von der Unkrautmasse zwischen 0 und 49 %. [Yield reduction in organically grown vining peas amounted to 0 to 49 % depending on weed matter.] Sächsisches Landesamt für Umwelt, Landwirtschaft und Geologie, Abteilung Gartenbau.

Laber, Hermann (2009) Quantifizierung der Ertragswirksamkeit betriebsüblicher Verunkrautung beim ökologischen Anbau von Gemüseerbsen für die industrielle Verarbeitung. [Quantification of weed competition in organically grown vining peas under field conditions.] Sächsisches Landesamt für Umwelt, Landwirtschaft und Geologie (LfULG), D-Dresden, Abteilung Gartenbau.

Laber, Hermann (1999) Effizienz mechanischer Unkrautregulationsmaßnahmen im Freilandgemüsebau. [Efficiency of mechanical weed control methods in field vegetable farming.] Thesis, Universität Hannover / Germany, Fachbereich Gartenbau. .

Laber, Hermann and Stützel, Hartmut (1998) Bekämpfungserfolg bei mechanischer Unkrautregulation. [Success of mechanical weed control measures.] Gemüse, 34 (10), pp. 561-565.

Laber, Hermann and Stützel, Hartmut (1998) Einflussfaktoren auf den Bekämpfungserfolg beim Hacken. [Factors influencing the success of mechanical weed control.] Gemüse, 34 (11), pp. 622-625.

Landwirtschaftskammer Hannover, (2003) Versuchsbericht zum Öko-Landbau 2002. [Report on experiments on organic agriculture in 2002.] Landwirtschaftskammer Hannover.

Leinonen, P. and Närkki, V. (2004) Lay-down working cart improves efficacy of hand weeding. Paper at: 6th EWRS workshop on physical and cultural weed control, Lillehammer, Norway, 8-10 March 2004.

Leinonen, P.; Saastamoinen, A. and Vilmunen, J. (2004) Finger weeder for cabbage and lettuce cultures. Paper at: 6th EWRS workshop on physical and cultural weed control, Lillehammer, Norway, 8-10 March 2004.

Lichtenhahn, Martin and Koller, Martin (2004) Gemüsebau. . Online at <http://www.oekolandbau.de/index.cfm?0004264C05401F6BBBAC6521C0A8D816>.

Litterick, Audrey M; Watson, Christine A and Atkinson, David (2002) Crop protection in organic agriculture - a simple matter? In: Powell, Jane and et al., (Eds.) Proceedings of the UK Organic Research 2002 Conference, Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth, pp. 203-206.

Litterick, Audrey M; Watson, Christine A and Robson, Melissa C (2002) An investigation into the relationship between preceding break crops and weed populations in barley crops in organic ley/arable rotations. In: Powell, Jane and et al., (Eds.) Proceedings of the UK Organic Research 2002 Conference, Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth, pp. 227-228.

Lötjönen, Timo and Mikkola, Hannu (1997) Weed control with inter-row hoeing in cereals. Paper at: NJF technia 97, technology of cost-efficient agricultural production : NJF seminar nr. 272, Pärnu, Estonia, 23.-25.10.1997.

Lötjönen, Timo and Vanhala, Petri (2003) Does mechanical weed control take effect on Sonchus arvensis? Paper at: NJF's 22nd congress "Nordic agriculture in global perspective", Turku, Finland, July 1-4, 2003.

LOUARN, Sébastien; NAWROCKI, Arkadiusz; Thorup-Kristensen, Kristian; Søgaard Lund, Ole; NØRREGAARD JENSEN, Ole; Collinge, David B. and Jensen, Birgit (2011) Proteomic and endophytic changes during storage of organically and conventionally grown carrots. Postharvest Biology and Technology, , - . [Completed]

Lukashyk, P.; Berg, M.; Juroszek, P. and Köpke, U. (2002) Direkte Kontrolle von Vicia hirsuta (L.) S.F. Gray in Wintergetreide. [Direct control of Vicia hirsuta (L.) S.F. Gray in winter grains.] In: Maidl, F.-X. and Diepenbrock, W. (Eds.) Mitteilungen der Gesellschaft für Pflanzenbauwissenschaften, Verlag Freisinger Künstlerpresse W. Bode, 14, pp. 173-174.

Lukashyk, P.; Berg, M. and Köpke, U. (2006) Strategies for controlling Cirsium arvense in organic crop production. Paper at: Joint Organic Congress, Odense, Denmark, May 30-31, 2006.

Lukashyk, P.; Berg, M. and Köpke, U. (2003) Vicia hirsuta in Wintergetreide: Direkte Kontrolle bei starker Verunkrautung. [Vicia hirsuta in winter cereals: direct control at high weed infestation.] In: Freyer, Bernhard (Ed.) Beiträge zur 7. Wissenschaftstagung zum Ökologischen Landbau: Ökologischer Landbau der Zukunft, Verlag: Universität für Bodenkultur Wien- Institut für Ökologischen Landbau, pp. 527-528.

Lukashyk, Pavel (2005) Problemunkräuter im Organischen Landbau: Entwicklung von Strategien zur nachhaltigen Regulierung von Ackerkratzdistel Cirsium arvense (L.) Scop. und Rauhhaarige Wicke Vicia hirsuta (L.) S. F. Gray. [Noxious weeds in Organic Agriculture: Development of strategies for sustainable control of Canada thistle Cirsium arvense (L.) Scop. and hairy tare Vicia hirsuta (L.) S. F. Gray.] Thesis, Institut für Organischen Landbau, Universität Bonn. Schriftenreihe Institut für Organischen Landbau. Verlag Dr. Köster Berlin.

Lundin, Gunnar (2005) Radmyllning och kombisådd av flytande gödselmedel i ekologisk spannmålsodling. [Band Fertilizing and Combinated Drilling of Liquid Fertilizer for Cereals in Organic Farming.] In: Ullvén, Karin and Alm, Jessica (Eds.) Ekologiskt Lantbruk Konferens, 22-23 november 2005, Ultuna, Uppsala, Centrum för uthålligt lantbruk, p. 305.

Løes, Anne-Kristin and Østergård, Hanne (2004) Endelig en COST-aksjon med økologisk siktemål. Forskningsnytt om økologisk landbruk i Norden (3), 1/8-19. [In Press]

Madsen, K.H.; Bertelsen, I. and Askegaard, M. (2014) Fertilizer placement and competitive ability of spring barley varieties - Results from two years of organic field trials. In: Cloutier, D.C. (Ed.) Abstracts 10th EWRS Workshop on Physical and Cultural Weed Control.

Mangerud, Kjell; Brandsæter, Lars Olav and Wærnhus, Kjell (2005) Ugrasharving i korn. [Weed harrowing in cereal crops.] In: Heiberg, Nina; Sundheim, Leif and Munthe, Kari (Eds.) Grønn kunnskap, Planteforsk, Ås, Norway, 9 (2), pp. 375-382.

Marshall, Athole H and Humphreys, Mervyn O (2002) Challenges in organic forage seed production. In: Powell, Jane and et al., (Eds.) Proceedings of the UK Organic Research 2002 Conference, Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth, pp. 95-96.

McKinnon, Kirsty and Løes, Anne-Kristin (2005) Planter som jorddekke - gjødsling og plantevern. [Plants used as a soil cover (mulch)- fertilisation and weed regulation effects.] Norwegian Centre for Ecological Agriculture, Tingvoll.

Mejnertsen, Peter (2004) Blandsæd giver dig flere muligheder i dit markbrug. [Intercropping gives you more posibilities in your arable crop production.] . Online at <http://www.lr.dk/planteavl/diverse/oekovaerk_blandsaed.htm>.

Melander, Bo (2006) Current achievements and future directions of physical weed control in Europe. Paper at: AFPP 3rd International conference on non-chemical crop protection methods, Lille, France, 13, 14 and 15 March 2006.

Melander, Bo and Kristensen, Jens Kristian (2005) Rækkedampning bruger mindre olie. Gartnertidende, 2005 (13), pp. 8-9.

Melander, B. (2007) Status on physical and cultural weed control methods for field crops in Europe. Paper at: Novel and Sustainable Weed Management in Arid and Semi-Arid Ecosystems, Rehovet, Israel, October.

Melander, B. (2005) Rodukrudt skal tackles bedre. Økologisk Jordbrug, December 2005, p. 4.

Melander, Bo (2008) Ukrudt i økologiske marker skal bekæmpes på nye måder. Landbrugsavisen, April 2008.

Melander, Bo (2006) Current European weed control methods and strategies against annual and perennial weeds in organic farming. Paper at: CHANNEL conference FOOD-CT-2004-003375, Budapest, Hungary, 4-7 April.

Melander, Bo and Barberi, Paolo (2004) PHYSICAL AND CULTURAL WEED CONTROL IN MINOR CROPS. Paper at: 4th International Weed Science Congress, Durban, 20-24 June 2004.

Melander, Bo; Jørgensen, Martin H. and Elsgaard, Lars (2004) Band-steaming reduces laborious hand-weeding in vegetables. DARCOFenews (3).

Melander, Bo; Jørgensen, Martin H. and Elsgaard, Lars (2004) Effekter af damp på ukrudt og mikroliv. FØJOenyt (1).

Melander, Bo; Nørremark, Michael and Fløjgaard, Erik (2008) Exposure and destruction of Elymus repens rhizomes and Rumex crispus rootstocks. In: Perennial Weeds - A growing problem, EWRS, Wageningen, p. 8.

Melander, Bo; Rasmussen, Ilse A and Bertelsen, Inger (2004) Common Couch-grass control with less tillage. DARCOFenews (4).

Melander, Bo; Rasmussen, Ilse A and Bertelsen, Inger (2004) Nye strategier til at bekæmpe kvik. DARCOFenews (6).

Melander, Bo; Rasmussen, Ilse Ankjær; Holst, Niels and Bertelsen, Inger (2004) Ikke-kemisk ukrudtsbekæmpelse - mekanisk og termisk. In: Ukrudtsbogen. Danmarks JordbrugsForskning, chapter 4, pp. 207-226.

Melander, Bo and van der Weide, Rommie (2006) Emerging technologies for physical weed control in row crops in Euro. Paper at: 46th Annual Meeting of the Weed Science Society of America (WSSA), New York, USA, 13-16 February 2006.

Melander, Forsker Bo (2002) Hårde betingelser for Vestaustraliens økologer. Økologisk Jordbrug, December 2002, p. 4.

Melander, Scientist Bo (2004) Ukrudtsbekæmpelse med rækkedampning. Planteproduktion 2004, Månedsmagasinet MARK, Danske Landbrugs Medier 15 januar 2004, 2004, p. 51.

Melander, Scientist Bo (2003) INTERGRATING PHYSICAL AND CULTURAL METHODS OF WEED CONTROL – EXAMPLES FROM EUROPEAN RESEARCH. Paper at: North Central Weed Science Society’s annual meeting, December 2003, Lousville, USA, 1-4 December 2003. [In Press]

Melander, Scientist Bo and Heisel, Scientist Torben (2002) Prospects and limitations for agricultural engineering in the development of sustainable weed control methods – examples from European research. Paper at: Australian Conference on Agricultural Engineering, Charles Sturt University, Wagga Wagga, September 2002.

Melander, Scientist Bo; Heisel, Scientist Torben and Jørgensen, Scientist Martin Heide (2002) Stribedampning og andre teknologiske nyheder til bekæmpelse af ukrudt i økologiske grønsager. In: Thomas Cottis, (Ed.) Den nasjonale kongress for økologisk landbruk 2002, Høgskolen i Hedmark, no. 3-2002, pp. 9-16.

Melander, Scientist Bo; Heisel, Scientist Torben and Jørgensen, Scientist Martin Heide (2001) Stribedampning mod ukrudt i højværdiafgrøder. Forskningsnytt om øekologisk landbruk i Norden, November 2001 (6), p. 13.

Melander, Scientist Bo; Jørgensen, Scientist Martin Heide and Elsgaard, Scientist Lars (2004) Recent results in the development of band steaming for intra-row weed control. In: Abstracts 6th EWRS Workshop on Physical and Cultural Weed Control, p. 21.

Melander, Senior Scientist Bo (2003) The importance of crop competition in physical and cultural weed control strategies. In: Proceeding of the workshop, p. 11.

Melander, Senior scientist Bo (2001) Danish research on physical weed control in bulb onion (Allium cepa L.) and leek (Allium porrum L.). Paper at: EWRS Workshop on "Weed Mangement Systems in Vegetables", Zaragoza, Spain, 4-5 June.

Melander, Senior scientist Bo (2001) Radrensning med og uden ukrudtsharvning i vintersæd om foråret i samspil med forskellige dyrkningsfaktorer. [Row hoeing followed by weed harrowing in winter cereals in spring under the influence of different cropping factors.] Paper at: 18. Danske Planteværnskonference, Marts.

Melander, Senior scientist Bo (2000) Mechanical weed control in transplanted sugar beet. In: Proceedings of the 4th EWRS Workshop on Physical Weed Control Elspeet, the Netherlands, p. 25.

Melander, Senior scientist Bo (1999) A 2-year cropping system for intra-row weed control in row crops. In: Proceedings of the 11th EWRS (European Weed Research Society) Symposium 1999, p. 101.

Melander, Senior scientist Bo (1998) Anvendelse af falsk såbed, blindharvning og flammebehandling i højværdiafgrøder. [Pre-emergence weed control in crops of high value by means of a false seedbed techniques, weed harrowing, and flaming.] Paper at: 15 Danske Planteværnskonference / Ukrudt, Marts.

Melander, Senior scientist Bo and Boelt, Senior scientist Birte (2003) Ukrudtsbekæmpelse ved udlæg af græsfrø på økologiske frøavlsbedrifter. Tidsskrift for Frøavl, May 2003 (5), pp. 6-7.

Melander, Senior scientist Bo and Hartvig, Technician Peter (1995) Weed harrowing in seeded onions. In: Proceedings of the Symposia, pp. 543-549.

Melander, Senior scientist Bo and Jørgensen, Scientist Martin Heide (2003) Band steaming for intra-row weed control in direct-sown vegetables. In: Dobrzanski, Dr. Adam (Ed.) Abstracts, EWRS, Skierniewice, 2003, Research Institute of Vegetable Crops, Instytut Warzywnictwa, pp. 13-15.

Melander, Senior scientist Bo; Korsgaard, Konsulent Maren and Willumsen, Senior scientist Jens (1999) Resultater og erfaringer med ukrudtsbekæmpelse i økologiske frilandsgrønsager. [Results and experiences with weed control in organic outdoor vegetables.] Paper at: 16 Danske Planteværnskonference / Ukrudt, Nyborg, Danmark, 4-5 marts.

Melander, Senior scientist Bo and Rasmussen, Scientist Ilse A. (2001) Radrensning tager besværligt ukrudt. Økologisk Jordbrug, August 2001, p. 9.

Melander, Senior scientist Bo and Willumsen, Senior scientist Jens (2000) Striglen kan holde løg og porre rene. Økologisk Jordbrug, April 2000, p. 13.

Melander, Bo (2013) Resultater med bekæmpelse af tidsler og blandede rodukrudstbestande. Speech at: Temadag om rodukrudt, Nilles Kro, 4 October 2013. [Completed]

Melander, Bo (2013) Kan ukrudtet styres, når ploven parkeres? In: Plantekongres 2013.

Melander, Bo (2012) Ukrudtsbekæmpelse i mere faste rammer. Økologi & Erhverv, 1 June 2012 (501), p. 17.

Melander, Bo (2012) Bring ukrudtsbekæmpelsen i fastere rammer. ICROFS nyt, 2 January 2012 (1), pp. 10-11.

Melander, Bo (2011) Voldsomt rodukrudt kræver hårde metoder. Landbrugsavisen, 2 December 2011, p. 20.

Melander, Bo (2011) Tools for minimising laborious hand-weeding in row crops. Speech at: 17th IFOAM OWC 2011, Namyangju, Korea, 28 September - 01 October 2011. [Completed]

Melander, Bo (2010) Er de nye lugerobotter en gevinst? Økologi & Erhverv, 3 December 2010 (468), pp. 16-17.

Melander, Bo and Heisel, Torben (2002) Band-steaming for intra-row weed control. In: Proceedings of the 5th Workshop of the EWRS Working Group: Physical and Cultural Weed Control, pp. 216-219.

Melander, Bo and Rasmussen, Ilse A. (2013) Kvikbekæmpelse på sandjord. Økologi & Erhverv, 8 February 2013 (516), p. 17.

Melander, Bo; Rasmussen, Ilse A.; Askegaard, Margrethe and Olesen, Jørgen E. (2014) Growth dynamics of perennial weeds in long-termed organic 8 cropping systems on two locations in Denmark. Agroecosystems and Environment, , - . [Completed]

Melander, Bo; Rasmussen, Ilse A. and Hansen, Preben Klarskov (2011) Nye danske resultater med bekæmpelse af Kveke (Elytrigia repens), Hestehov (Tussilago farfara) og Åkertistel (Cirsium arvense) i økologisk jordbrug. Speech at: National seminar, “Flerårige ugras i eng og åker”, Sarpsborg, d. 8 feb. 2011, Sarpsborg, Norge.

Melander, Bo; Rasmussen, Ilse A. and Holst, Niels (2011) Resultater og erfaringer med rodukrudtsbekæmpelse i økologisk planteproduktion ved AU. Speech at: Økologi-Kongres 2011, Vingstedcentret, 23.-24. november 2011. [Completed]

Melander, Bo; Rasmussen, Ilse A. and Holst, Niels (2011) Ikke-kemisk ukrudtsbekæmpelse – mekanisk og termisk. In: Ukrudtsbogen. Aarhus University, Flakkebjerg, chapter 4, pp. 205-228.

Melander, Bo; Ravnskov, Sabine and Kristensen, Jens Kristian (2012) Skru bare ned for varmen. Økologi & Erhverv, 4 May 2012, p. 16.

Melander, Bo; Ørum, Jens Erik and Thomsen, Henning C. (2011) Mekanisk ukrudtsbekæmpelse i kartofler. Paper at: Plantekongres 2011, 11 January - 12 January.

Mercer, P C (2006) Growing oganic cereals in Northern Ireland - disease and weed problems. In: Atkinson, C; Ball, B; Davies, D H K; Rees, R; Russell, G; Stockdale, E A; Watson, C A; Walker, R and Younie, D (Eds.) Aspects of Applied Biology 79, What will organic farming deliver? COR 2006, Association of Applied Biologists, pp. 229-232.

Messmer, M.; Berner, A.; Krauss, M.; Jansa, J.; Presterl, Th.; Schmidt, W. and Mäder, P. (2010) Genetic variation for nutrient use efficiency in maize under different tillage and fertilization regimes with special emphasis to plant microbe interaction. In: Breeding for the resilience: a strategy for organic and low-input farming systems? Proceedings of the Eucarpia 2nd conference of the "Organic and Low-Input Agriculture" Section , pp. 72-75.

Mücke, Markus and Meyercordt, Armin (2006) Maisanbau auf suboptimalen Standorten - Einfluss variierter Reihenweiten und Auswirkungen einer Dammkultur auf die Ertrags- und Qualitätsleistungen des Maises bei gleichzeitig variierter Beikrautregulierung. [Organic maize cultivation on suboptimal locations.] Landwirtschaftskammer Niedersachsen, Hannover, Fachbereich Ökologischer Landbau.

Müller, Karl-Josef (Getreidezüchtungsforschung Darzau); Meyercordt, Armin (Landwirtschaftskammer Hannover); Mücke, Markus (Landwirtschaftskammer Hannover); Rieckmann, Carsten (Landwirtschaftskammer Hannover); Scholvin, Andreas (Landwirtschaftskammer Hannover); Grocholl, Jürgen (Landwirtschaftskammer Hannover) and Kakau, Joachim (Landwirtschaftskammer Weser Ems) (2004) Versuchsergebnisse im Ökologischen Ackerbau in Niedersachsen 2002 - 2003. [Research results in organic arable farming in Lower Saxony in 2002 - 2003.] .

Nielsen, Søren Hundevadt; Bøgild, Anders; Jensen, Kjeld and Bertelsen, Keld Kjærhus (2011) Implementations of FroboMind using the Robot Operating System framework. In: NJF Seminar 441 Automation and System Technology in Plant Production, 7 (5), NJF Report, no. 441, pp. 10-14.

Niggli, Urs and Dierauer, Hansueli (2000) Unkrautbekämpfung im ökologischen Landbau in der Schweiz. [Weed Management in Organic Agriculture in Switzerland.] In: Pallutt, Bernhard (Ed.) "Unkrautregulierung im Ökologischen Landbau"; Berichte aus der Biologischen Bundesanstalt, Saphir Verlag, D-Ribbesbüttel, 72, pp. 17-26.

Nkurunziza, Libère and Streibig, Jens Carl (2011) Fructan storage and regeneration of perennial weeds: Cirsium arvense (L.) Scop and Tussilago farfara (L.). Working paper, FACULTY O F L I F E S C I E N C E S, University of Copenhagen. [Completed]

Noe, Egon; Sørensen, Peter; Melander, Bo; Olesen, Jørgen E.; Hermansen, Sven; Bertelsen, Inger and Fog, Erik (2012) Muligheder og barrierer for implementering af principper for robuste og højtydende planteavlssædskifter i praksis – Grundlagsrapport for barrierer undersøgelsen. Aarhus University, Department of Agroecology.

Nyberg, Anna and Lindén, Börje (2000) Dokumentation av ekologiska växtodlingsgårdar i Västra Sverige 1996-98. [Documentation of organic arable farms in west Sweden 1996-98.] Reports from Department of Agricultural research Skara, Series B Crops and soils, no. 6. Swedish University of Agricultural Sciences.

Nørremark, Michael and Griepentrog, Hans W. (2004) Analysis and Definition of the close-to-crop Area in Relation to Robotic Weeding. Paper at: 6th Workshop of the EWRS Working Group 'Physical and Cultural Weed Control', Lillehammer, Norway, 8th March 2004.

Nørremark, Michael and Griepentrog, Hans W. (2003) Den digitale mark. [The digital field.] magazine, July 2003 (15), pp. 10-11.

Nørremark, Michael; Swain, Kishore and Melander, Bo (2009) Advanced Non-Chemical and Close to Plant Weed Control system for Organic Agriculture. In: Salokhe, V.M. and Soni, P. (Eds.) Proceedings of the conference 'Role of agricultural engineering in advent of changing global landscape' , p. 8.

Oesau, Albert (2002) Vegetationskundliche Untersuchungen im Projekt "Ökologische Bodenbewirtschaftung" in Wörrstadt-Rommersheim 1995-2004: Zwischenbericht 2000. In: Bodenbearbeitung und Bodengesundheit: Zwischenergebnisse im Projekt Ökologische Bodenbewirtschaftung in Wörrstadt-Rommersheim (Rheinhessen, Rheinland-Pfalz). Schriftenreihe der Landesanstalt für Pflanzenbau und Pflanzenschutz, Mainz, no. 13 (2002). Landesanstalt für Pflanzenbau und Pflanzenschutz, Mainz und Stiftung Ökologie und Landbau, Bad Dürkheim, pp. 47-56.

Olesen, Jørgen E.; Askegaard, Margrethe and Rasmussen, Ilse A. (2005) Learning from a long-term crop rotation experiment. In: NJF Report, Nordic Association of Agricultural Scientists (NJF), 1 (1), pp. 91-94.

Olesen, J.E. (2014) Slutrapport HighCrop: Højere produktivitet i dansk økologisk planteproduktion. Aarhus University, Institut for Agroøkologi.

Olsen, Lars Egelund (2012) Effekt af strategier mod rodukrudt - de nyeste forskningsresultater. [Effect of strategies against perennial weeds - the latest research.] Landbrugsinfo, 21 March 2012, 1- 3.

Owen, D; LeBlanc, S and Fillmore, S A E (2006) Short-term effect of soil disturbance by mechanical weeding on plant available nutrients in an organic vs conventional rotations experiment. In: Atkinson, C; Ball, B; Davies, D H K; Rees, R; Russell, G; Stockdale, E A; Watson, C A; Walker, R and Younie, D (Eds.) Aspects of Applied Biology 79, What will organic farming deliver? COR 2006, Association of Applied Biologists, pp. 301-305.

Pallutt, Bernhard (2000) Unkrautunterdrückung und -bekämpfung durch Fruchtfolgegestaltung, Bodenbearbeitung, Aussaatzeit, Saatmenge und Stickstoffversorgung. [Weed suppression and weed control with crop rotation, soil cultivation, sowing time, sowing rate and nitrogen availability.] In: Pallutt, Bernhard (Ed.) Pflanzenschutz im Ökologischen Landbau - Probleme und Lösungsansätze - Drittes Fachgespräch am 02.11.1999 in Kleinmachnow - "Unkrautregulierung im ökologischen Landbau", Saphir Verlag, D-Ribbesbüttel, Berichte aus der Biologischen Bundesanstalt für Land- und Forstwirtschaft, no. 72, pp. 35-46.

Paulsen, H M; Schochow, M; Ulber, B; Kuhne, S and Rahmann, G (2006) Mixed cropping systems for control of weeds and pests in organic oilseed crops. In: Atkinson, C; Ball, B; Davies, D H K; Rees, R; Russell, G; Stockdale, E A; Watson, C A; Walker, R and Younie, D (Eds.) Aspects of Applied Biology 79, What will organic farming deliver? COR 2006, Association of Applied Biologists, pp. 215-219.

Pedersen, Hanne Lindhard; Williams, Michelle; Bertelsen, Marianne; Andersen, Lillie; Paaske, Klaus; Sigsgaard, Lene; Korsgaard, Mare; Jørgensen, Rasmus Nyholm and Bertelsen, Keld (2011) Nye løsninger sikrer fremtidig vækst i økologisk æbledyrkning. Poster at: HorTeam-Expo 2011 - The Scandinavian Horticultural Exhibition for Machinery and Technology, Research Centre Aarslev, 7 June 2011.

Pekrun, Carola and Claupein, Wilhelm (2003) Unkrautmanagement durch Bodenbearbeitung und andere Maßnahmen indirekter Unkrautkontrolle im ökologischen Landbau. [Weed management by tillage and other indirect means of weed control in organic farming.] Paper at: XXVII. Fortbildungskurs der Sächsischen Interessengemeinschaft Ökologischer Landbau, Bad Düben, 2003.

Pekrun, Carola; Häberle, Annette and Claupein, Wilhelm (2003) Bedeutung von Grund- und Stoppelbearbeitung für die Kontrolle der Ackerkratzdistel (Cirsium arvense) im Ökologischen Landbau. [The implication of primary tillage and stubble tillage for the control of Canada thistle (Cirsium arvense) in organic farming.] Landbauforschung Völkenrode, Sonderheft 255, pp. 29-34.

Pekrun, Carola; Häuser, Inga and Claupein, Wilhelm (2002) Einfluss dreijährig variierter Stoppelbearbeitung auf den Bodensamenvorrat unter den Produktionsbedingungen des Ökologischen Landbaus. [Influence of triannual diversified stupple ploughing for the reserve of seeds in the soil under the conditions of organic farming.] Mitteilungen der Gesellschaft für Pflanzenbauwissenschaften, 14, pp. 193-194.

Petersen, J. and Eskesen, K. (2002) Afgrøde og ukrudt konkurrerer om kvælstof. Poster at: Åbent hus, Foulumgård, 13 june 2002. [Unpublished]

Petersen, Jens (2005) Nedfældet kvælstof skal placeres tæt ved afgrøden. Agrologisk, January 2005, 1.

Petersen, Jens (2005) Kvælstofoptagelse i afgrøde og ukrudt ved placeret handels- og husdyrgødning. Paper at: Plantekongres 2005.

Petersen, Jens (2003) Konkurrence om gødningskvælstof. [Weed and crop competition for fertilizer N.] Økologisk Jordbrug, January 2003, 280, p. 4.

Petersen, Jens (2002) Ukrudt stjæler gødningskvælstof. [Weeds steel fertilizer N.] Landsbladet, November 2002, 47, p. 32.

Petersen, Jens (2002) Konkurrence mellem afgrøde og ukrudt om tilført husdyrgødningskvælstof. In: DJF-rapport nr. 64 Markbrug, Danmarks JordbrugsForskning, pp. 119-127.

Petzold, Winfried and Kolbe, Hartmut (2002) Einführung neuer bodenangetriebener und zapfwellengetriebener Hackgeräte in die Praxis - Leistungsvergleich mit herkömmlicher Pflegetechnik auf ökologisch wirtschaftenden Betrieben. [Introducing novel groundp.t.o.-driven and p.t.o.-driven mechanical hoes into practice - performance compared to traditional cultivation technology on organic farms.] Schriftenreihe des Bundesministeriums für Verbraucherschutz, Ernährung und Landwirtschaft, Reihe A: Angewandte Wissenschaft, no. Heft 492. Landwirtschaftsverlag GmbH, Münster-Hiltrup.

Pinna, Massimo ; Spagnolo, Sandra and Gamba, Ursula (2007) Caratteristiche agronomiche e possibilità di utilizzo di Brassica juncea (L.) Czern. [Agronomic features and use opportunity of Brassica juncea (L.) Czern.] Bollettino di Agricoltura biologica a cura del C.R.A.B. (3), pp. 47-54.

Plagge, Jan (2000) Probleme der Unkrautbekämpfung im ökologischen Gartenbau aus der Sicht der Praxis. [Problems in weed management in organic horticulture from a practical point of view.] In: Pallutt, Bernhard (Ed.) "Unkrautregulierung im Ökologischen Landbau"; Berichte aus der Biologischen Bundesanstalt, Saphir Verlag, D-Ribbesbüttel, 72, pp. 14-16.

Preston, Keith (2008) Management & sustainability of stockless organic arable and horticultural systems. Institute of Organic Training and Advice (IOTA), Craven Arms.

Prins, U.; Eekeren, N. van and Oomen, G.J.M. (2006) Bi-cropping fodder maize in an existing (grass)clover sward. Poster at: Joint Organic Congress, Odense, Denmark, May 30-31, 2006.

Prins, U. and Wit, J. de (2006) Intercropping cereals and grain legumes: a farmer’s perspective. Poster at: Joint Organic Congress, Odense, Denmark, May 30-31, 2006.

Rasmussen, I. (2005) Når man skal vælge vårbygsort. [How to choose spring barley variety.] Økologisk Jordbrug, April 2005, 25 (335), p. 6.

Rasmussen, I. (2004) Spildfrø af vinterraps - er det et problem for økologerne? [Volunteer oilseed rape - is it a problem for organic farmers?] Månedsmagasinet Mark, January 2004 (1), p. 55.

Rasmussen, I. and Askegaard, M. (2004) Crop rotation limits Canada thistle, but not Couch grass or annual weeds. DARCOFenews (4).

Rasmussen, I. and Askegaard, M. (2004) Ukrudtets udvikling i de økologiske sædskifteforsøg. [The development of weeds in the Danish organic crop rotation experiments.] FØJOenyt (6).

Rasmussen, I.A.; Askegaard, M. and Olesen, J.E. (2007) Perennial weed control and nitrogen leaching in long-term organic crop rotation experiments for cereal production. In: Melander, B.; Cloutier, D. and Gerowitt, B. (Eds.) Proceedings 7th EWRS sorkshop on Physical and Cultural Weed Control, p. 133.

Rasmussen, I.A.; Askegaard, M. and Olesen, J.E. (2007) Perennial weeds in organic arable farming – challenges & dilemmas. In: Lund, M.; Larsen, T.U.; Thøgersen, J.O.; Christensen, S.; Børsting, C.; Plauborg, F.; Munkholm, L.J.; Olesen, J.E.; Callesen, O.; Askegaard, M.; Hansen, J.G. and Hvelplund, T. (Eds.) NJF Report, 3 (2), pp. 316-317.

Rasmussen, I.A.; Askegaard, M. and Olesen, J.E. (2005) Development of weeds in organic crop rotation experiments. In: Bàrberi, P.; Bastiaans, L.; Christensen, S.; Fernandez-Quintanilla, C.; Froud-Williams, B.; Grundy, A.; Hatcher, P.; Kudsk, P.; Marshall, J.; Melander, B.; Quadranti, M.; Tei, F.; Thompson, A. and Vurro, M. (Eds.) Proceedings of the 13th EWRS Symposium, Bari, Italy, 19-23 June 2005, European Weed Research Society (EWRS), pp. 1-2.

Rasmussen, I.A.; Askegaard, M. and Olesen, J.E. (2004) Økologiske sædskifter til korn - kan produktionen øges? [Organic crop rotations for cereal production - is it possible to increase the yield?] Forskningsnytt om økologisk landbruk i Norden (4), pp. 16-18.

Rasmussen, I.A.; Bastiaans, L.; Holst, N.; Grundy, A. and Melander, B. (2007) 'All models are wrong - but some are useful' - a report from an EWRS workshop on modelling weed population dynamics. In: Bàrberi, P.; Bastiaans, L; Bohren, C.; Christensen, S.; Gerowitt, B.; Grundy, A.; Hatcher, P.; Kudsk, P.; Melander, B.; Rubin, B.; Streibig, J.; Tei, F.; Thompson, A. and Vurro, M. (Eds.) 14th EWRS Symposium 17-21 June 2007 Hamar Norway, p. 116.

Rasmussen, I.A.; Bastiaans, L.; Holst, N.; Grundy, A. and Melander, B. (2007) Report from an EWRS workshop on modelling weed population dynamics. In: Melander, B.; Cloutier, D. and Gerowitt, B. (Eds.) Proceedings 7th EWRS workshop on Physical and Cultural Weed Control, p. 174.

Rasmussen, I.A.; Holst, N.; Pedersen, L. and Rasmussen, K. (2002) Computer model for simulating the long-term dynamics of annual weeds under different cultivation practices. In: Barberi, P. and Cloutier, D. (Eds.) Proceedings of the 5th EWRS Workshop on Physical and Cultural Weed Control, pp. 6-13.

Rasmussen, Ilse A. (2006) Rodukrudt i sædskifteforsøg. [Perennial weeds in organic crop rotation experiments.] Økologisk Jordbrug, June 2006 (364), p. 6.

Rasmussen, Ilse A. (2006) Følfod og agertidsel. Speech at: Temadag om Sædskifte og Rodukrudt, Den økologiske Landbrugsskole, Kalø, 23. november 2005.

Rasmussen, Ilse A. (2006) Perennial weeds in a crop rotation perspective. Speech at: Ecological Agriculture course at KVL, Research Centre Flakkebjerg, 2 March 2006.

Rasmussen, Ilse A. (2006) Ukrudtsbekæmpelse i økologisk jordbrug. Speech at: Beder Gartnerskole, Forskningscenter Flakkebjerg, 28 Februar 2006.

Rasmussen, Ilse A. (2004) Svært at holde kvikken i skak. Økologisk Jordbrug, April 2004, 24 (311), p. 6.

Rasmussen, Ilse A. (2003) Ukrudtsfloraens udvikling i de økologiske sædskifteforsøg. FØJO enyt - Nyhedsbrev fra Forskningscenter for Økologisk Jordbrug (3).

Rasmussen, Ilse A. (2003) Nyt fra de økologiske sædskifteforsøg - hvad sker der med jordens pulje af ukrudtsfrø på de økologiske forsøgsmarker. Økologisk Jordbrug, May 2003, 23 (289), p. 6.

Rasmussen, Ilse A. (2002) Nyt fra de økologiske sædskifteforsøg - effekten af økologisk sædskifte begynder at vise sig. Økologisk Jordbrug, September 2002, 22 (271), p. 6.

Rasmussen, Ilse A. (2002) Nyt fra de økologiske sædskifteforsøg - Kløvergræsset i Jyndevad har været et smertensbarn. Økologisk Jordbrug, May 2002, 22 (264), p. 6.

Rasmussen, Ilse A. (2001) Nyt fra de økologiske sædskifteforsøg - alle forsøgsparceller er høstet. Økologisk Jordbrug, October 2001, 21 (249), p. 6.

Rasmussen, Ilse A. (2001) Sådan kan spildraps måske begrænses. Produktion - DLGs Landbrugsmagasin, June 2001.

Rasmussen, Ilse A. (2001) Nyt fra de økologiske sædskifteforsøg - aktiviteter i marken lige nu. Økologisk Jordbrug, April 2001, 21 (239), p. 6.

Rasmussen, Ilse A. (2001) Strategier for ukrudtsbekæmpelse i økologisk vinterhvede. In: DJF-rapport nr. 40, Markbrug. 18. Danske Planteværnskonference, Danmarks JordbrugsForskning, pp. 197-210.

Rasmussen, Ilse A. (2000) Nyt fra de økologiske sædskifteforsøg. Økologisk Jordbrug, August 2000, 20 (221), p. 8.

Rasmussen, Ilse A. (2000) Sowing time, false seedbed, row distance and mechanical weed control in organic winter wheat. In: Cloutier, Daniel (Ed.) Abstracts 4th EWRS Workshop on Physical Weed Control, pp. 5-7. [Unpublished]

Rasmussen, Ilse A. (1999) Nyt fra de økologiske sædskifteforsøg - Lige nu i marken. Økologisk Jordbrug, September 1999, 19 (200), p. 8.

Rasmussen, Ilse A. (1999) Nyt fra de økologiske sædskifteforsøg - Lige nu i marken. Økologisk Jordbrug, May 1999, 19 (194), p. 10.

Rasmussen, Ilse A.; Askegaard, Margrethe and Olesen, Jørgen E. (2006) Sædskifteforsøg skal give nye svar. [Crop rotation experiments expected to give new answers.] Økologisk Jordbrug, April 2006 (359), p. 9.

Rasmussen, Ilse A.; Askegaard, Margrethe and Olesen, Jørgen E. (2002) Problemer med rodukrudt. Økologisk Jordbrug, April 2002, 22 (263), p. 8.

Rasmussen, Ilse A.; Askegaard, Margrethe and Olesen, Jørgen E. (2000) Weed control in organic crop rotation experiments for grain production. In: Alföldi, T.; Lockeretz, W. and Niggli, U. (Eds.) Proceedings 13th International IFOAM Scientific Conference, vdf Hochschulverlag AG an der ETH Zürich, p. 182.

Rasmussen, Ilse A.; Askegaard, Margrethe and Olesen, Jørgen E. (1999) Ukrudt i økologiske kornsædskifteforsøg. In: 16. Danske Planteværnskonference, Plantebeskyttelse i økologisk jordbrug, Sygdomme og skadedyr. DJF-rapport, Markbrug, no. 10. Danmarks JordbrugsForskning, pp. 17-28.

Rasmussen, Ilse A. and Hansen, Preben Klarskov (2005) Index beregner hvor godt økologisk vårbyg konkurrerer med ukrudt. [An index calculates how well organic spring barley competes against weeds.] FØJOenyt, 3.

Rasmussen, Ilse A. and Holst, Niels (2004) Computer model for simulating the long-term dynamics of annual weeds. In: Cloutier, Daniel C. and Ascard, Johan (Eds.) Proceedings of the 6th EWRS Workshop on Physical and Cultural Weed Control, CD-ROM, Europeon Weed Reserach Society, p. 69.

Rasmussen, Ilse A.; Holst, Niels and Madsen, Kathrine Hauge (2003) Modeling the effect of management strategies on the seed bank dynamics of volunteer oilseed rape. In: Boelt, Birte (Ed.) Proceedings of the 1st European Conference on the Co-existence of Genetically Modified Crops with Conventional and Organic Crops, Danish Institute of Agricultural Sciences, pp. 184-186.

Rasmussen, Ilse A. and Melander, Bo (2005) Balance i ukrudtsbestanden. Mark, November 2005 (11), p. 31.

Rasmussen, Ilse A. and Melander, Bo (2001) Ukrudtsbekæmpelse i økologisk dyrket vintersæd: resultater og erfaringer. Forskningsnytt om økologisk landbruk i Norden, November 2001 (6), pp. 9-11.

Rasmussen, Ilse A.; Melander, Bo; Hansen, Preben Klarskov and Holst, Niels (2004) Langsigtet balance i ukrudtsbestanden. [Long-Term balance in the weed population.] In: Seminar om Planteværn 2004, Landbrugsafgrøder, Dansk Landbrugsrådgivning, Landcentret, Planteavl, pp. 12-15.

Rasmussen, Ilse A.; Melander, Bo; Rasmussen, Karsten; Jensen, Rikke K.; Hansen, Preben K.; Rasmussen, Gitte; Christensen, Svend and Rasmussen, Jesper (2000) Recent advances in weed management in cereals in Denmark. Paper at: 13th IFOAM Scientific Conference, Basel, Switzerland, 28 to 31 August 2000.

Rasmussen, Ilse A.; Melander, Bo; Rasmussen, Karsten and Rasmussen, Jesper (1997) Regulering af ukrudt. In: Kristensen, Erik Steen (Ed.) Økologisk Planteproduktion. SP rapport, no. 15. Danmarks JordbrugsForskning, chapter 5, pp. 63-86.

Rasmussen, Ilse A. and Rasmussen, Jesper (2000) Beskidte rækkeafgrøder giver ukrudt i kornet. Økologisk Jordbrug, May 2000, 20 (217), p. 14.

Rasmussen, Ilse A. and Rasmussen, Karsten (2003) Mekanisk ukrudtsbekæmpelse i kartofler. [Mechanical weed control in potatoes.] In: DJF-rapport, Markbrug: 20. Danske Planteværnskonference - Korn, kartofler, skadedyr, miljø og postere, Danmarks JordbrugsForskning, Foulum (89), DJF-rapport, Markbrug, no. 89, pp. 91-104.

Rasmussen, Ilse A.; Thomsen, Henning; Askegaard, Margrethe and Olesen, Jørgen E. (2003) Kvik volder kvaler. Økologisk Jordbrug, May 2003, 23 (288), p. 8.

Rasmussen, Ilse A.; Thomsen, Henning C.; Askegaard, Margrethe and Olesen, Jørgen E. (2006) Den langsigtede effekt af kløvergræsgrøngødning og efterafgrøder på udviklingen af kvik og tidsler. In: Jespersen, Jørgen B. and Pedersen, Carl Åge (Eds.) Sammendrag af indlæg Plantekongres 2006, Danmarks JordbrugsForskning og Dansk Landbrugsrådgivning, pp. 358-359.

Rasmussen, Ilse A.; Thomsen, Henning C. and Melander, Bo (2004) Erfaringer med kvikbekæmpelse på Jyndevad Forsøgsstation. In: Sørensen, Henning Laen (Ed.) Månedsmagasinet Mark, Dansk Landbrugs Medier (1).

Rasmussen, Ilse Ankjær; Holst, Niels; Graglia, Enrico; Hansen, Preben Klarskov; Melander, Bo; Mathiassen, Solvejg Kopp; Kudsk, Per; Jensen, Peter; Boelt, Birte and Madsen, Katrine Hauge (2004) Ukrudtsøkologi og -biologi. In: Ukrudtsbogen. Danmarks JordbrugsForskning, chapter 2, pp. 19-42.

Rasmussen, Jesper (2010) Ukrudtsharven kan afløse kemi. [Weed harrows can replace herbicides.] Agrologisk, 28, pp. 22-23.

Rasmussen, Jesper (2009) Ukrudtsharvning - mod et mere nuanceret vejledningsgrundlag. [Post-emergence weed harrowing - working on better guidelines.] In: Sammendrag af indlæg Plantekongres 2009, pp. 286-288.

Rasmussen, Jesper (2009) Unifying parameters in mechanical weed control research - report of the roundtable. In: Proceedings 8th EWRS Workshop on Physical and Cultural Weed Control, pp. 142-145.

Rasmussen, Jesper (2008) Mindre ukrudt med punktsåning. [Less weeds with punch planting.] Maskinbladet, August 2008, 28 (447), p. 13.

Rasmussen, Jesper (2004) Falsk såbed sparer tid til roehakning. [False seed bed reduces manual weeding.] Økologisk Jordbrug, April 2004, 24 (311), p. 8.

Rasmussen, Jesper (2004) Are we making progress in mechanical weed control research? Speech at: 6th EWRS Workshop on Physical and Cultural Weed Control, Lillehammer, Norway, 8-10 March 2004.

Rasmussen, Jesper (2004) Are we making progress in mechanical weed control research? In: Proceedings 6th EWRS Workshop on Physical and Cultural Weed Control, Lillehammer, Norway, 115-122., pp. 115-122.

Rasmussen, Jesper and Nørremark, Michael (2009) På vej mod den intelligente ukrudtsharve. [Approaching the intelligent weed harrow.] Forskningsnytt om økologisk landbruk i Norden (1), pp. 26-28.

Rasmussen, Jesper and Nørremark, Michael (2007) Forskning i ukrudtsharvning får nyt liv med digital billedbehandling. [Digital image analysis offers new possibilities in weed harrowing research.] FØJOenyt.

Rasmussen, Jesper and Nørremark, Michael (2007) Digital images for assessing soil cover of crop plants. In: Proceedings 7th EWRS Workshop on Physical and Cultural Weed Control, pp. 123-129.

Rasmussen, Jesper and Nørremark, Michael (2007) Digital images for assessing soil cover of crop plants. Speech at: 7th EWRS Workshop on Physical and Cultural Weed Control, Salem, Germany, 11-14 March 2007.

Rasmussen, Jesper; Nørremark, Michael and Bibby, Bo Martin (2008) New Technologies Call for New Research Priorities in Physical Weed Control with Low Selectivity. Speech at: 5th International Weed Science Congress, Vancouver, BC, Canada, 23-27 June 2008.

Rasmussen, Scientist Karsten and Melander, Scientist Bo (2004) Radrensere med automatpilot er godt på vej. Ny Viden fra Miljøstyrelsen nr. 1 - 15 januar 2004, 77-81., January 2004, pp. 77-81.

Rasmussen, I.A. (2008) Kvik og tidsler i sædskifteforsøgene. [Elytrigia repens (Couch grass) and Cirsium arvense (Canada thistle) in the organic crop rotation experiments.] Økologisk Jordbrug, April 2008 (407), p. 12.

Rasmussen, Ilse A. and Mallory, Ellen (2010) Organic bread-wheat in New England, USA. ICROFS news, November 2010 (4), pp. 12-13.

Rasmussen, Ilse A.; Sønderskov, Mette; Damgaard, Christian and Kristensen, Kristian (2009) Effect of Elymus repens on yield of winter wheat, spring barley and faba bean in an organic crop rotation experiment. In: Cloutier, D.C. (Ed.) Proceedings 8th EWRS Workshop on Physical and Cultural Weed Control, Zaragoza, Spain, p. 129.

Rasmussen, Jesper and Harbo La-Cour, Anders (2011) Ukrudt i fugleperspektiv. Økologi & Erhverv, 12 August 2011, 31 (462), p. 20.

Rasmussen, Jesper; Henriksen, Christian Bugge and Griepentrog, Hans W. (2011) Less intra-row weeds – experiences with a punch planter and a cycloid hoe based on GPS. Paper at: 9th EWRS Workshop on Physical and Cultural Weed Control, Samsum, Turkey, 28-30 March 2011.

Rebsdorf, Simon Olling and Sørensen, Linda S. (2009) ICROFS news 2/2009 - newsletter from ICROFS. ICROFS news no. 2, May 2009.

Rendtorff, Janne and Holm, Høgni (2004) Påvirkninger af ukrudt og sygdom på udbyttet af økologiske sortsblandinger. [The effects on yield of oprganically grown variety mixtures by weed and disease.] Thesis, Roskilde Universitetscenter, Hus 13.2. . [Unpublished]

Roth, Rebekka (2005) Übersicht aus 10 Jahren Versuchstätigkeit im Ökologischen Gemüsebau 1994-2004. . [Unpublished]

Ruşen, Mine; Tuncer, Celal; Turan, Ali and Ak, Kibar (2010) Fındık Kurdu [Balaninus(= Curculio) Nucum L. Colertera: Curculionidae)] ’na Karşı Organik Kökenli Preparatlarla Mücadele İmkanlarının Araştırılması. [Investıgatıon Of Strugle Possıbılıtıes By Usıng Organıc Preparatus Agaınst To Balanınus (Curculio) Nucum L.] In: Alay Vural, Ayşen (Ed.) Organik Tarım Araştırma Sonuçları 2005-2010. T.C. Tarım ve Köyişleri Bakanlığı, Ankara Turkey, pp. 265-270.

Sächsische Landesanstalt für Landwirtschaft, (2003) Versuchsbericht 2002 der Sächsischen Landesanstalt für Landwirtschaft [Report on trials in 2002 carried out at the Agricultural Research Center of Saxonia]. Sächsische Landesanstalt für Landwirtschaft.

Salonen, Jukka (2009) Comparison of three tillage intensities on grass weed occurrence in cereal rotation. In: Proceedings, European Weed Research Society, p. 77.

Salonen, Jukka; Andersson, Lars; Andreasen, Christian and Semb Torresen, Kirsten (2008) Key perennial weeds in arable crops in the Nordic countries. Paper at: Perennial weeds a growing problem : an EWRS-NJF workshop, Wageningen, The Netherlands, 10-12 November 2008.

Salonen, Jukka; Brandsæter, Lars Olav; Melander, Bo and Fogelfors, Håkan (2008) Activities of the NJF working group on Perennial Weeds - Comparison of seasonal sprouting readiness of three perennial weeds. Paper at: Perennial weeds a growing problem : an EWRS-NJF workshop, Wageningen, The Netherlands, 10-12 November 2008.

Salonen, Jukka and Hyvönen, Terho (2009) Repeated surveys in Finland follow the changes of weed flora in spring cereal fields. In: Proceedings of the workshop, European Weed Research Society, p. 38.

Sanders, Richard; Niedeggen, Barbara; Jones, Hannah; Wolfe, Martin; Hitchings, Roger and Fleming, David (2005) EFRC Bulletin 81 December 2005. Elm Farm Research Centre, all departments.

Schjønning, P. (2003) Jordbearbejdning. [Soil tillage (in organic farming).] Økologisk Jordbrug, 2003 (281), p. 4.

Schleuß, Uwe (2003) Aspekte zur Unkrautregulierung im ökologischen Landbau [Aspects for weed management in organic farming]. Bauernblatt Schleswig-Holstein und Hamburg, 18, pp. 30-31.

Schleuß, Uwe (2003) Bodenbearbeitung und Unkrautregulierung im ökologischen Landbau [Soil cultivation and weed control in organic farming]. Landtechnik - Agricultural Engineering, 58 (1), pp. 50-51.

Schleuß, Uwe (2003) Einbau der Unkrautregulierung als Kulturmaßnahme - Kann die Bodenbearbeitung zur Unkrautregulierung im ökologischen Landbau beitragen? [Integration of weed control in crop cultivation - may soil cultivation be effective for weed control in organic agriculture?] Bauernblatt Schleswig-Holstein und Hamburg, 1, pp. 36-38.

Schleuß, Uwe (2003) Mit Striegel und Hacke gegen Unkräuter [With curry-comb and hoe against weed]. Neue Landwirtschaft, 4, pp. 51-53.

Schliesser, Ingeborg and Kolbe, Hartmut (2010) Silomais im Ökolandbau: Einflüsse von Saattermin, Gülledüngung und Unkrautregulierung. [Maize silage in organic agriculture: Effects of sowing date, manure fertilization and weed control.] Schriftenreihe des Landesamtes für Umwelt, Landwirtschaft und Geologie, 23, pp. 3-62.

Schmid, Andi; Weibel, Franco; Allemann, Pius and Santini, Dino (2004) Sandwich-System - die Sache wird konkret. [The FiBL Sandwich System.] In: Häseli, Andreas (Ed.) Tagungsband zur FiBL Bioobstbautagung 28.01.2004 in Frick. Forschungsinstitut für biologischen Landbau, Frick, pp. 41-42.

Schmidt, Harald (2003) Viehloser Ackerbau im ökologischen Landbau - Evaluierung des derzeitigen Erkenntnisstandes anhand von Betriebsbeispielen und Expertenbefragungen. [Arable Organic Farming - Evaluation of the present state of knowledge on the basis of case studies and expert surveys.] Universität Gießen, Professur für Organischen Landbau.

Schmutz, U; Rayns, F and Sumpton, P (2006) 10-year interdisciplinary monitoring of organic stocklass, vegetable rotations at Warwick-HRI, Kirton, South Lincolnshire, UK. In: Atkinson, C; Ball, B; Davies, D H K; Rees, R; Russell, G; Stockdale, E A; Watson, C A; Walker, R and Younie, D (Eds.) Aspects of Applied Biology 79, What will organic farming deliver? COR 2006, Association of Applied Biologists, pp. 29-32.

Schuster, Martina (2006) Feldversuche zum Winterraps und Sommerraps im ökologischen Anbau. [Field trials of organic farming winter and spring rape seed cultivation.] Poster at: Vortragsveranstaltung mit Feldtag „Forschung zum ökologischen Landbau in Sachsen“, Roda, 14. 06. 2006. [Unpublished]

Sigsgaard, Lene (2012) Äppelträffen 2012 - SLU. Speech at:

Sirvydas, P.A. and Kerpauskas, P. (2012) Thermal weed control. Akademija, Kaunas, Lithaunia.

Sirvydas, P.A.; Kerpauskas, P. and Kučinskas , V. (2011) Plant energy exchange. Kaunas, Akademija, Lithaunia.

Spaabaek, Nina Johanne (2012) Hvornår skal agertidsler og følfod bekæmpes? www.landbrugsinfo.dk, 26 March 2012, pp. 1-2.

Sprenger, Barbara and Belde, Maren (2003) Auflaufraten von Ackerwildpflanzen auf ökologisch bewirtschafteten Flächen des Forschungsverbundes Agrarökosysteme München (FAM). [Emergence of weeds on organically cultivated fields of the Research Association Agrarian Ecosystems in Munich (FAM).] Paper at: 7. Wissenschaftstagung zum Ökologischen Landbau, Ökologischer Landbau der Zukunft, Wien, 24.-26. Februar 2003.

Steen, Christiane; Dillmann, Klaus and Ortlieb, Reinhard (2011) Stärkung der Ertragssicherheit und Rentabilität im biologischen Erdbeeranbau durch effektivere Unkrautkontrolle sowie Regulierung des Erdbeerblütenstechers und verschiedener Wurzelfäulen. [Stabilization of yield stability and profitability in organic strawberry cultivation through a more effective weed control management and also through the regulation and control of the strawberry blossom weevil and the Verticillium wilt complex.] Bioland Beratung GmbH, D-Augsburg.

Steen, Christiane; Ortlieb, Reinhard; Dillmann, Klaus and Koch, Sabine (2013) Stärkung der Ertragssicherheit und Rentabilität im biologischen Erdbeeranbau durch effektivere Unkrautkontrolle sowie Regulierung des Erdbeerblütenstechers und verschiedener Wurzelfäulen. [Strengthening the yield guarantee and productivity in organic strawberry production through a more effective weed control management strategy, the control of the strawberry blossom weevil and root rot pathogens.] Bioland Beratung GmbH, D-Augsburg, Forschung und Entwicklung.

Storkey, Jonathan; Döring, Thomas F.; Baddeley, J. A.; Marshall, Athole; Roderick, S. and Jones, Hannah (2011) Modelling the ability of legumes to suppress weeds. Aspects of Applied Biology , 109, pp. 53-58.

Stubsgaard, Anke (2012) Punktsåning og gasbrænding mod ukrudt i økologiske rækkeafgrøde. [Punch planting and flame weeding against weed in organic row crops.] landbrugsinfo, 14 March 2012, - .

Stumm, C. and Brenner, S. (Red.) (2003) Dokumentation 10 Jahre Leitbetriebe Ökologischer Landbau in Nordrhein-Westfalen. [Documentation: 10 years model farms organic agriculture in North Rhine-Westphalia.] Schriftenreihe des Lehr- und Forschungsschwerpunktes „Umweltverträgliche und Standortgerechte Landwirtschaft“, no. 105. Landwirtschaftliche Fakultät der Rheinischen Friedrich-Wilhelms-Universität Bonn.

Stumm, Christoph (2007) Mit Ölrettich gegen Spätverunkrautung. Bioland-Magazin, 2007 (6), pp. 10-12.

Stumm, Christoph (2006) Auf den Acker geschaut: Leitbetriebe Ökologischer Landbau NRW – Praxisorientierte Forschung und Beratung vor Ort. B&B Agrar (1), pp. 26-27.

Stumm, Christoph and Köpke, Ulrich (2008) Untersaaten in Kartoffeln: Reduzierung der Spätverunkrautung, Minderung hoher Restnitratmengen. Informationen für Beratung und Praxis. Institut für Organischen Landbau der Universität Bonn, D-Bonn, Landwirtschaftskammer Nordrhein-Westfalen, D-Köln-Auweiler.

Svanäng, K.; Roempke, G.; Eriksson, G.; Johansson, L-B.; Lund, T.; Karlsson, L.; Öhman, T.; Ihrsén, J.; Pettersson, O.; Eriksson, K. and Jacobsson, C. (2002) Deltagardriven forskning – Växtodlingsgruppen, resultat och utvärdering av arbetet under 1998 till 2001. [Participatory research - the crop production group, results and evaluation of the work during 1998 till 2001.] Ekologiskt lantbruk, no. 35. Centre for Sustainable Agriculture.

Swain, Kishore C.; Nørremark, Michael; Bochtis, Dionysis; Sørensen, Claus Grøn and Green, Ole (2010) Vision-based weed identification with farm robots. In: XVIIth World Congress of the International Commission of Agricultural and Biosystems Engineering, Book of Abstracts, CIGR XVIIth World Congress, p. 11.

Sørensen, Cand.agro Søren (2003) Simple artificial infection method of Cirsium arvense (L.) Scop. with the obligate pathogen Puccinia punctiformis and regrowth from root. In: Nordic Association of Agricultural Scientists 22nd Congress, Nordic agriculture in Global Perspective, MMT Agrifood Research Finland and NJF, p. 101.

Sørensen, Peter; Nielsen, Erling and Olesen, Jørgen E. (2014) Udbytter i det økologiske planteavlssædskifteforsøg. ICROFS-nyt, 2014 (1), pp. 8-10.

Talgre, Liina; Eremeev, Viacheslav; Sanchez de Cima, Diego; Tein, Berit; Reintam, Endla; Matt, Darja and Luik, Anne (2014) Green manures as winter cover crops enhance soil improvement and weed regulation in crop rotation. Poster at: TILMAN-ORG project meeting in Lyon, France, Lyon, France, 25.-27.06.2014.

Taulet, Annick ; Traentle, Marie and Mazollier, Catherine (2006) Comparaison de paillages biodégradables : compte-rendu d'essai 2005. [Comparison of biodegradable mulches : annual report 2005.] Groupe de Recherche en Agriculture Biologique.

Thomsen, Henning C. and Rasmussen, Ilse A. (2008) Anlæggelse af forsøg på Jyndevad Forsøgsstation. [Treatment of experiments at Jyndevad Experimental Station.] . Online at <http://www.youtube.com/watch?v=4yIesFh1ZcU&feature=BFa&list=PL7CE1EC63C17D0A6B&lf=results_main>, accessed on: 24 October 2011.

Tschabold, Jean-Luc; Weibel, Franco; Häseli, Andreas; Suter, Francisco and Delabays, Nicola (2008) Dem Un- ist ein Habichtskraut gewachsen. bioaktuell, 1/2008, pp. 8-9.

Turner, Rebecca J and Grundy, Andrea C (2002) Weed control strategies in organically grown carrots. In: Powell, Jane and et al., (Eds.) Proceedings of the UK Organic Research 2002 Conference, Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth, pp. 229-230.

Tørresen, K.S.; Salonen, J.; Fogelfors, H.; Håkansson, S. and Melander, B. (2006) Weed problems in various tillage systems in the Nordic countries. In: Book of abstracts, Nordic Association of Agricultural Scientists, 2 (4), NJF Report, p. 16.

Tørresen, K.S.; Salonen, J.; Fogelfors, H.; Håkansson, S. and Melander, B. (2006) Weed problems in various tillage systems in the Nordic countries. In: Extended abstracts, Nordic Association of Agricultural Scientists, pp. 54-60.

van den Broek, R.; Rovers, J.; Gruppen, R. and Gubbels, W. (editor): Wageningen UR, Praktijkonderzoek Plant & Omgeving (PPO) (Ed.) (2010) Beetle eater beheerst de aspergekever bij de oogst van groene asperges in 2010. [Beetle eater against the Asparagus beetle by harvesting green asparagus in 2010.] Wageningen UR, Praktijkonderzoek Plant & Omgeving (PPO).

van der Weide, Rommie; Riemens, Marleen; Ascard, Johan and Melander, Bo (2011) Tools and innovations in mechanical weed control in north-western Europe. In: Topics in Canadian Weed Science, 6, Physical weed control: Progress and challenges, pp. 89-102.

van Eekeren, Nick; Fehér, L.; Smeding, Frans; Prins, Udo and Jansonius, PieterJans (2006) Controlling broad-leaved dock (Rumex obtusifolius) in grass clover mixtures. In: Lloveras, J.; Gonazalez-Rodriguez, A.; Vasquez-Yanez, O.; Pinero, J.; Santamaria, O.; Oleaamd, L. and Poblaciones, M.L. (Eds.) Sustainable grassland, 11.

van Elsen, Thomas and Scheller, Ute (1994) Zur Bedeutung einer stark gegliederten Feldflur für die Entwicklung von Ackerwildkraut-Gesellschaften. Beispiele aus Thüringen und Nordhessen. [The importance of a diverse pattern of fields for the development of weed-communities. Examples from Thuringia and Northern Hesse.] Naturschutz und Landschaftspflege in Brandenburg, Sonderheft 1, Naturschutz in der Agrarlandschaft, pp. 17-31.

Van Gils, Bert; Willekens, Koen; Beeckman, Annelies and Delanote, Lieven (2014) Onderzoek naar niet-kerende bodembewerking en groenbemesters: resultaten veldproeven 2013. BIOpraktijk, 1 April 2014, pp. 1-3.

Van Gils, Bert; Willekens, Koen; Beeckman, Annelies and Delanote, Lieven (2013) Onderzoek naar niet-kerende bodembewerking en groenbemesters: resultaten veldproeven 2012. BIOpraktijk, 1 February 2013, pp. 1-3.

van Loenen, Mariska C A; Turbett, Yzanne; Mullins, Chris E; Wilson, Michael J; Fielden, Nigel; Seel, Wendy E and Leifert, Carlos (2002) Low temperature/short duration steaming as a sustainable method of soil disinfection. In: Powell, Jane and et al., (Eds.) Proceedings of the UK Organic Research 2002 Conference, Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth, pp. 211-214.

Vanhala, P.; Kurstjens, D.; Ascard, J.; Bertram, A.; Cloutier, D.C.; Mead, A.; Raffaelli, M. and Rasmussen, Jesper (2004) Guidelines for physical weed control research: flame weeding, weed harrowing and intra-row cultivation. In: Proceedings 6th EWRS Workshop on Physical and Cultural Weed Control, 194-225, pp. 194-225.

Vanhala, P.; Lötjönen, T. and Salonen, J. (2004) Response of Sonchus arvensis to mechanical and cultural weed control. Paper at: 6th EWRS workshop on physical and cultural weed control, Lillehammer, Norway, 8-10 March 2004.

Vanhala, P. and Salonen, J. (2007) Overwintering and regrowth of Sonchus arvensis roots in Finland as affected by fragmentation and burial in three different soil types. Paper at: 7th EWRS workshop on physical and cultural weed control, Salem, Germany, 11-14 March 2007.

Vanhala, Petri (2002) Relationship between the timing of seedbed preparation and the efficacy of pre-emergence flaming. Paper at: 4th EWRS workshop on physical weed control, Elspeet, The Netherlands, 20-22 March 2000.

Vanhala, Petri and Lötjönen, Timo (2004) Reglering av åkermolke och andra fleråriga ogräs. Forskningsnytt om økologisk landbruk i Norden (4), pp. 22-23.

Vanhala, Petri; Lötjönen, Timo and Salonen, Jukka (2003) Effect of crop species and management practices on perennial weeds in organic farming. Paper at: NJF's 22nd congress "Nordic agriculture in global perspective", Turku, Finland, July 1-4, 2003.

Vanhala, Petri and Rahkonen, Jukka (1998) Laboratory assessment of crop tolerance to selective flaming. Paper at: 3rd EWRS workshop on physical weed control, Wye College, UK, 23-25 March 1998.

Verschwele, Arnd (2009) False seedbeds in organic grown winter wheat. In: Cloutier, Daniel C (Ed.) Proceedings 8th EWRS Workshop on Physical and Cultural Weed Control. Zaragoza, Spain. 9-11 March 2009. , p. 139.

Verschwele, Arnd (2007) Reducing weed infestation in winter wheat by sowing technique. In: Cloutier, Daniel C (Ed.) Proceedings of the 7th EWRS Workshop on Physical and Cultural Weed Control Salem, Germany 11-14 March 2007. , pp. 91-96.

Verschwele, Arnd (2005) Unkrautregulierung mit Herbiziden - Chancen und Risiken für den Ökologischen Landbau. [Weed control with herbicides - chances and risks for organic farming.] Speech at: 8. Wissenschaftstagung Ökologischer Landbau - Ende der Nische, Kassel, 01.03.2005-04.03.2005.

Verschwele, Arnd (2004) Herbizide im Ökologischen Landbau? [Herbicides for Organic farming?] In: Biologische Bundesanstalt für Land- und Forstwirtschaft, (Ed.) Mitteilungen aus der Biologischen Bundesanstalt für Land- und Forstwirtschaft (396), p. 258.

Verschwele, Arnd and Böhm, Herwart (2004) Ampfer- und Distelbekämpfung im Ökolandbau. In: Rahmann, G. and Kühne, S. (Eds.) Ressortforschung für den ökologischen Landbau 2003, Senatsarbeitsgruppe Ökologischer Landbau, D-Trenthorst, D-Kleinmachnow, pp. 16-18.

Verschwele, Arnd; Häusler, Andreas; Pallutt, Bernhard and Engelke, Thomas (2003) Strategien zur Regulierung von Wurzelunkräutern im ökologischen Landbau - Erarbeitung von Ansätzen für erfolgversprechende Strategien: Erarbeitung von Regulierungsansätzen am Beispiel der Acker-Kratzdistel. [Strategies to control perennial weeds in organic farming systems – developing approaches for promising strategies: approaches to control Cirsium arvense.] Biologische Bundesanstalt für Land- und Forstwirtschaft, Institut für Unkrautforschung und Institut für integrierten Pflanzenchutz.

{Project} Strategien zur Regulierung von Wurzelunkräutern im ökologischen Landbau - Erarbeitung von Ansätzen für erfolgversprechende Strategien: Erarbeitung von Regulierungsansätzen am Beispiel der Acker-Kratzdistel. [Strategies to control perennial weeds in organic farming systems – developing approaches for promising strategies: approaches to control Cirsium arvense.] Runs 2002 - 2004. Project Leader(s): Verschwele, Dr. Arnd, Biologische Bundesanstalt für Land- und Forstwirtschaft.

Walker, R L; Svoboda, K; Booth, E J and Walker, K C (2006) Coloured mulch as a weed control technology and yield booster for summer savory. In: Atkinson, C; Ball, B; Davies, D H K; Rees, R; Russell, G; Stockdale, E A; Watson, C A; Walker, R and Younie, D (Eds.) Aspects of Applied Biology 79, What will organic farming deliver? COR 2006, Association of Applied Biologists, pp. 233-236.

Warlop, Francois; Andrieu, Camille; Sallaberry, Camille; Filippi, Olivier and Lemoine, Hélène (2013) L'enherbement permanent comme alternative au travail mécanique sous les oliviers. Poster at: DINABIO 2013, Tours, France, 10-12 november 2013.

Widmer, Albert; Husistein, Alfred; Bertschinger, Lukas; Weibel, Franco; Fliessbach, Andreas and Käser, Melanie (2004) Systemvergleichsversuch: Integrierte und biologische Apfelproduktion. Teil II: Wachstum, Ertrag, Kalibrierung, Boden. [Comparison of integrated and organic apple production: Growth, Yields and Soils.] Schweizerische Zeitschrift für Obst- und Weinbau (3), pp. 6-9.

Willekens, Koen and Van Gils, Bert (2012) TILMAN-ORG veldproef 2012-2013 Overzicht van de werkzaamheden 2012. Poster at: [Completed]

Williams, Michelle (2011) FruitGrowth - Novel organic solutions securing future growth. Presentation at: Statusmøde Organic RDD og CORE Organic II, Horsens, Denmark, 16. november 2011. [Submitted]

Williams, Michelle; Bertelsen, Marianne; Sigsgaard, Lene; Andersen, Lillie; Pedersen, Hanne Lindhard; Paaske, Klaus; Jørgensen, Rasmus Nyholm; Bertelsen, Keld and Korsgaard, Maren (2011) Nye løsninger sikrer fremtidig vækst i økologisk æbledyrkning. ICROFSnyt, June 2011, 2011 (2), pp. 8-9.

Winkler, Jan (2013) Plevele v ekologickém zemědělství. [Weeds in organic farming.] Zemědělec, 2013, 2013 (37), p. 34.

Wright, Isobel (2008) Combinable protein crop production. Institute of Organic Training and Advice, Craven Arms, Shropshire, UK.

Wynen, Els (1990) Sustainable and Conventional Agriculture in South-Eastern Australia - A Comparison. Economics Research Report, no. 90.1. School of Economics and Commerce, La Trobe University, Melbourne.

Younie, David; Taylor, Dick; Coutts, Michael; Matheson, Stella; Wright, G and Squire, Geoff (2002) Effect of organic crop rotations on long-term development of the weed seedbank. In: Jane, Powell (Ed.) Research in context. Proceedings of the UK Organic Research 2002 Conference, 26-28 March 2002, Aberystwyth, Organic Centre Wales, Aberystwyth, pp. 215-220.

Zillger, Christine; Dehe, Margit; Postweiler, Karin and Hoos, Sabine (editor): Dienstleistungszentrum Ländlicher Raum, Rheinhessen-Nahe-Hunsrück (Ed.) (2006) Mechanische Unkrautbekämpfung im ökologischen Landbau - Zwischenbericht 2005. [Mechanical weed control in organic farming - Report 2005.] Projektbericht. Dienstleistungszentrum Ländlicher Raum Rheinhessen-Nahe-Hunsrück, Kompetenzzentrum Ökologischer Landbau.

Zillger, Christine; Postweiler, Karin; Dehe, Margit and Tschöpe, Beate (2007) Mechanische Unkrautbekämpfung im ökologischen Landbau - Zwischenbericht 2006. [Mechanical weed control in organic farming - Report 2006.] Dienstleistungszentrum Ländlicher Raum Rheinhessen-Nahe-Hunsrück, Kompetenzzentrum Ökologischer Landbau.

Østergård, Hanne; Kristensen, Kristian; Hovmøller, Mogens and Willas, Jakob (2006) Genetic potential for grain yield in spring barley varieties and variety mixtures in variable organic environments. Paper at: Joint Organic Congress, Odense, Denmark, May 30-31, 2006.

Østergård, Hanne (2008) Discussion documents – SUSVAR Visions Workshop, Karrebæksminde, Denmark, April 2008. Working paper. [Unpublished]

This list was generated on Sun Sep 21 23:27:23 2014 CEST.