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SHORT-TERM EFFECTS OF CROP HUSBANDRY ON THE WEED COMMUNITY OF A CEREAL-LEGUME ROTATION, “TILMAN-ORG session”

Salat, A.; Armengot, L.; Sans, F.X. and Blanco-Moreno, J.M. (2014) SHORT-TERM EFFECTS OF CROP HUSBANDRY ON THE WEED COMMUNITY OF A CEREAL-LEGUME ROTATION, “TILMAN-ORG session”. In: Rahmann, G. and Aksoy, U. (Eds.) Building Organic Bridges, Johann Heinrich von Thünen-Institut, Braunschweig, Germany, 3, Thuenen Report, no. 20, pp. 973-976.

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Summary

Several agricultural practices can be used to control weed population thus avoiding the use of herbicides. Tillage, fertilization and growth of a green manure are found among them. In the context of a mid-term experiment set up in an organic field in Gallecs (Barcelona), we analysed the effect of chisel vs mouldboard ploughing, application of fertilizer and growth of a green manure on the density of weeds and on composition of the weed community. We evaluated weed density and community composition in April 2012 (spelt crop), February 2013 (green manure cover) and May 2013 (chickpea crop) and also analysed the sources of variation of density for the most abundant species in all periods. Our results show that, under the cereal crop, mouldboard plough had a negative effect on weed densities and also affected weed community composition. While green manure was standing on the field, its presence also had a negative effect on weed density. We found differences in composition between sown and unsown plots. After removal of green manure, though, these effects disappeared. For total weed density in the chickpea crop, we could not find differences due to any of the treatments applied. However, single species analyses showed that Setaria viridis and Polygonum convolvulus responded positively to tillage and fertilization and that P. convolvulus and Convolvulus arvensis were negatively affected by previous presence of green manure. Weed community composition were found to be unaffected by any of our treatments.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:Weed management, Weed density, Weed community, reduced tillage, TILMAN-ORG
Agrovoc keywords:
LanguageValueURI
EnglishWeed controlhttp://aims.fao.org/aos/agrovoc/c_8345
EnglishGreen manureshttp://aims.fao.org/aos/agrovoc/c_3375
EnglishMinimum tillagehttp://aims.fao.org/aos/agrovoc/c_32734
Subjects: Crop husbandry > Weed management
Research affiliation: European Union > CORE Organic II > TILMAN-ORG
International Conferences > 2014: 18th IFOAM OWC Scientific Track: 4th ISOFAR Scientific Conference
FP7 Grant Agreement Number:33
ISBN:978-3-86576-128-6
DOI:10.3220/REP_20_1_2014
Deposited By: Salat, Agnes
ID Code:23807
Deposited On:28 Oct 2014 12:40
Last Modified:28 Nov 2014 13:16
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:urn:nbn:de:gbv:253-201407-dn053621-1

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