Items where Author is "Ambus, Dr Per"

Number of eprints: 40.

Carter, Mette S.; Sørensen, Peter; Petersen, Søren O.; Ma, Xiuzhi and Ambus, Per (2014) Effects of green manure storage and incorporation methods on nitrogen release and N2O emissions after soil application. Biology and Fertility of Soils, 50 (8), 1233-1246.

Carter, Mette S.; Ambus, Per; Petersen, Søren O. and Sørensen, Peter (2013) Kløvergræs ensilage og kompost som grøngødning. [Grass-clover silage and compost as green manure.] ICROFS Nyt, 15 November 2013, 4, pp. 4-5.

Carter, Mette S.; Sørensen, Peter; Petersen, Søren O. and Ambus, Per (2013) Effects of green manure storage and incorporation methods on greenhouse gas fluxes and N mineralization after soil application. Poster at: Greenhouse Gas Management in European Land Use Systems, Antwerp, 16-18 September 2013.

Carter, Mette S.; Sørensen, Peter; Petersen, Søren O. and Ambus, Per (2013) Nitrogen mineralization and greenhouse gas emissions after soil incorporation of ensiled and composted grass-clover as green manure. 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. 41-42.

Johansen, Anders; Carter, Mette S.; Jensen, Erik Steen; Hauggaard-Nielsen, Henrik and Ambus, Per (2013) Effects of digestate from anaerobic digested cattle slurry and plant materials on soil microbiota and fertility and emission of CO2 and N2O. Applied Soil Ecology, 63, pp. 36-43.

Petersen, Søren O.; Ambus, Per; Elsgaard, Lars; Schjønning, P. and Olesen, Jørgen E. (2013) Long-term effects of cropping system on N2O emission potential. Soil Biology and Biochemistry, 57, pp. 706-712.

Hauggaard-Nielsen, Henrik; Johansen , Anders; Carter, Mette S.; Ambus, Per and Jensen, Erik Steen (2012) Strip cropping of alternating perennial grass-clover and annual rye - vetch intercrops when grown within an organic farming system. Field Crops Research, 136 ( ), 1-11.

Carter, Mette S.; Hauggaard-Nielsen, Henrik; Heiske, Stefan; Jensen, Morten; Thomsen, Sune T.; Schmidt, Jens Ejbye; Johansen, Anders and Ambus, Per (2012) Consequences of field N2O emissions for the environmental sustainability of plant-based biofuels produced within an organic farming system. Global Change Biology Bioenergy, 4 (4), pp. 435-452.

Hauggaard-Nielsen, Henrik; Johansen, Anders; Carter, Mette S.; Ambus, Per and Jensen, Erik Steen (2012) Annual maize and perennial grass-clover strip cropping to produce biomass for bioenergy – within an organic farming approach. Biomass & Bioenergy, ( ), - . [Submitted]

Müller-Stöver, Dorette; Hauggaard-Nielsen, Henrik; Eriksen, Jørgen; Ambus, Per and Johansen, Anders (2012) Microbial biomass, microbial diversity, soil carbon storage, and stability after incubation of soil from grass–clover pastures of different age. Biology and Fertility of Soils, 48, 371- 383.

Carter, Mette S.; Hauggaard-Nielsen, Henrik; Heiske, Stefan; Thomsen, Sune T.; Jensen, Morten; Schmidt, Jens Ejbye; Johansen, Anders and Ambus, Per (2011) Field emissions of N2O during biomass production may affect the sustainability of agro-biofuels. Speech at: Sixth International Symposium on Non-CO2 Greenhouse gases (NCGG-6), Amsterdam, The Netherlands, 2-4 November 2011. [Completed]

Carter, Mette S.; Hauggaard-Nielsen, Henrik; Heiske, Stefan; Thomsen, Sune T.; Jensen, Morten; Schmidt, Jens Ejbye; Johansen, Anders and Ambus, Per (2011) Greenhouse gas emissions from cultivation of energy crops may affect the sustainability of biofuels. Speech at: Risø Energy Conference, Roskilde, Denmark, 10-12 May 2011. [Completed]

Petersen, Søren O.; Schjønning, P. and Ambus, Per (2011) Afgrøderester og sædskifte har stor betydning for udledning af lattergas. Landbrugsavisen, 1 April 2011, p. 16.

Carter, Mette S.; Hauggaard-Nielsen, Henrik; Thomsen, Sune T.; Heiske, Stefan; Jensen, Morten; Schmidt, Jens Ejbye; Johansen, Anders and Ambus, Per (2010) Udledning af drivhusgas ved dyrkning af energiafgrøder - har det nogen betydning? [Emission of greenhouse gases during the cultivation of energy crops – does it make a difference?] Speech at: Seminar om bioenergi i økologisk landbrug, Middelfart, Denmark, 7 December 2010. [Completed]

Carter, Mette S.; Hauggaard-Nielsen, Henrik; Thomsen, Sune T.; Heiske, Stefan; Jensen, Morten; Schmidt, Jens Ejbye; Johansen, Anders and Ambus, Per (2010) Relating N2O emissions from energy crops to the avoided fossil fuel-derived CO2 – a study on bioethanol and biogas produced from organically managed maize, rye, vetch and grass-clover. Speech at: GHG Europe Workshop on Bioenergy, Dublin, Ireland, 27-29 October 2010. [Completed]

Carter, Mette S. and Ambus, Per (2009) Greenhouse gas emissions from cultivation of energy crops – is it important? ICROFS news, November 2009, 4, pp. 2-3.

Carter, Mette S. and Ambus, Per (2009) Nødvendig viden om mark-emissioner for valg af biobrændsel. [Necessary knowledge on field emissions to choose between biofuels.] ICROFS nyt, October 2009, 3, pp. 5-6.

Carter, Mette S.; Hauggaard-Nielsen, Henrik; Johansen, Anders and Ambus, Per (2009) Consequences of agro-biofuel production for greenhouse gas emissions. In: NJF Report, Vol. 5, No 3, NJF General Secretariat, Stockholm, Sweden, pp. 34-35.

Hauggaard-Nielsen, Henrik; Jensen, Erik Steen; Carter, Mette S.; Johansen, Anders and Ambus, Per (2009) Strip intercropping strategy for biomass to energy production while on the same time maintaining soil fertility. In: Seminar 428, Energy conversion from biomass production - EU-AgroBiogas, Nordic Association of Agricultural Scientists, Stockholm, Sweden, 5 (3), NJF Report, pp. 22-23.

Johansen , Anders; Hauggaard-Nielsen, Henrik; Ambus, Per and Carter, Mette S. (2009) Recycling of bioenergy waste-stream materials to soil in organic farming systems. Poster at: NJF Seminar 422 , Tartu in Estonia, 25-27 August 2009.

Ambus, Per (2009) Klimavenlig majs ved minimal tilførsel af kvælstof. [Climate change friendly maize with reduced nitrogen applications.] Landbrugsavisen, April 2009.

Ambus, Per (2009) Mindre økologisk lattergas - Økologisk planteavl belaster ikke miljøet i samme grad som konventionel planteavl. Dette udsagn gælder måske også for udslippet af lattergas. [Less organic nitrous oxide - Organic cropping systems have less impacts in the environment compared with conventional cropping systems. Perhaps this statement is true also concerning emissions of nitrous oxide.] Økologisk Jordbrug, February 2009 (426).

Carter, Mette S.; Albert, Kristian R. and Ambus, Prof. Per (2009) Is organic farming a mitigation option? – A study on N2O emission from winter wheat. Poster at: International Scientific Congress on Climate Change, Copenhagen, Denmark, 10-12 March. [Unpublished]

Carter, Mette S.; Johansen, Anders; Haugaard-Nielsen, Henrik and Ambus, Per (2008) Consequences of agro-biofuel production for greenhouse gas emissions. Poster at: EnergyDTU Internal Conference, Technical University of Denmark, Lyngby, Denmark, 11 December. [Unpublished]

Ambus, Per (2007) Økologisk bioenergi og drivhusgasser. [Organic bioenergy and greenhouse gases.] Økologisk Jordbrug, November 2007 (396).

Carter, Mette S. and Ambus, Per (2006) Biologically fixed N2 as a source for the N2O production in a grass clover mixture, measured by 15N2. Nutrient Cycling in Agroecosystems, 74, pp. 13-26.

Jensen, Erik Stee; Ambus, Per; Bellostas, Natalia; Boisen, Sigurd; Brisson, Nadine; Corre-Hellou, Guanelle; Crozat, Yves; Dahlmann, Christoph; Dibet, Audry; von Fragstein, Peter; Gooding, Mike; Hauggaard-Nielsen, Henrik; Kasyanova, Elena; Monti, Michele and Pristeri, Aurelio (2006) Intercropping of cereals and grain legumes for increased production, weed control, im-proved product quality and prevention of N –losses in European organic farming systems. Paper at: Joint Organic Congress, Odense, Denmark, May 30-31, 2006.

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.

Hauggaard-Nielsen, Henrik; Ambus, Per; Brisson, Nadine; Crozat, Yves; Dahlmann, Christoph; Dibet, Audrey; von Fragstein und Niemsdorff, Peter; Gooding, Mike; Kasyanova, Elena; Launay, Marie; Monti, Michele; Pristeri, Aurelio and Steen Jensen, Erik (2006) Pea-barley intercrops use nitrogen sources 20-30% more efficiently than the sole crops. Paper at: Joint Organic Congress, Odense, Denmark, May 30-31, 2006.

Laberge, Guillaume; Ambus, Per; Nielsen, Henrik Hauggaard and Jensen, Erik Steen (2006) Stabilization and plant uptake of N from 15N-labelled pea residue 16.5 years after incorporation in soil. Soil Biology and Biochemistry, 38 (7), pp. 1998-2000.

Andersen, Mette Klindt; Hauggaard-Nielsen, Henrik; Ambus, Per and Jensen, Erik Steen (2004) Biomass production, symbiotic nitrogen fixation and inorganic N use in dual and tri-component annual intercrops. Plant and Soil, 266, pp. 273-287.

Thyme, Mette and Ambus, Per (2004) From N2 fixation to N2O emission in a grass-clover mixture. In: Hatch, D.J.; Chadwick, D.R.; Jarvis, S.C. and Roker, J.A. (Eds.) Controlling nitrogen flows and losses, Wageningen Academic Publishers, The Netherlands, pp. 365-366.

Hauggaard-Nielsen, Henrik; Ambus, Per and Jensen, Erik Steen (2003) The comparison of nitrogen use and leaching in sole cropped versus intercropped pea and barley. Nutrient Cycling in Agroecosystems, 65 (3), pp. 289-300.

Thyme, Mette and Ambus, Per (2003) From N2 fixation to N2O emission in a grass-clover pasture. Poster at: 12th N workshop "Controlling N flows and losses", Exeter, UK, 21st - 24th September 2003. [In Press]

Ambus, Dr Per (2002) Undersøgelse af kvælstofbinding og lattergas fra kløvergræsmarker. Økologisk Jordbrug, May 2002 (265).

Thyme, Mette and Ambus, Per (2002) Production of N2O in grass-clover pastures. In: van Ham, J; Baede, APM; Guicherit, R and Williams-Jacobse, JGFM (Eds.) Non-CO2 greenhouse gases: Scientific understanding, control options and policy aspects, Millpress, Rotterdam, Holland, pp. 149-150.

Thyme, Ph.D. stud. Mette and Ambus, Dr Per (2002) Production of N2O in grass-clover pastures. In: van Ham, J; Baede, APM; Guicherit, R and Williams-Jacobse, JGFM (Eds.) Non-CO2 greenhouse gases: Scientific understanding, control options and policy aspects, Millpress, Rotterdam, Holland, pp. 149-150.

Hauggaard-Nielsen, Henrik; Ambus, Per and Jensen, Erik Steen (2001) Interspecific competition, N use and interference with weeds in pea-barley intercropping. Field Crops Research, 70 (2), pp. 101-109.

Hauggaard-Nielsen, Henrik; Ambus, Per and Jensen, Erik Steen (2001) Reintroducing grain legume-cereal intercropping for increased protein production in European cropping systems. In: Proceedings of the 4th European Conference on Grain Legumes, AEP - European association for grain legume research, pp. 52-53.

Hauggaard-Nielsen, Henrik; Ambus, Per and Jensen, Erik Steen (2001) Temporal and spatial root distribution and competition for nitrogen in pea-barley intercropping – a field study employing 32P methodology. Plant and Soil, 236 (1), pp. 63-74.

This list was generated on Sun Jul 13 16:05:59 2025 CEST.