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The effect of Avena sterilis L. invasion on weed abundance and diversity in conventional and organic cereal fields in the Mediterranean region

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.

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Summary

The aim of this paper is to analyse the growth of the native invader weed Avena sterilis L. (wild oat) and its invasion effect on weed community abundance and diversity in relation to cropping system (organic vs. conventional) in dryland cereal fields under Mediterranean conditions. To achieve this, a comparative experimental design involving one conventional and one nearby organic field was used. Our results show that the effect of A. sterilis invasion on resident weeds and cereal biomass depended on the cropping system. Species richness and diversity of weed community were more negatively affected by the invasion in the conventional field, whereas cereal biomass was drastically reduced in the organic field. The cropping system did not affect the invasive ability of A. sterilis, but the higher A. sterilis biomass recorded in the conventional field suggests strong potential long-term invasions in this system.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:Avena sterilis, invasion, diversity, croppng system, weeds
Subjects: Crop husbandry > Weed management
Environmental aspects > Biodiversity and ecosystem services
Research affiliation: Spain > SEAE - Spanish Society of Organic Farming
International Conferences > 2008: IFOAM OWC: Research Track / ISOFAR > 2.6 Crop health and weed management
Deposited By: Sans, Dr. F. Xavier
ID Code:11869
Deposited On:23 Sep 2008
Last Modified:12 Apr 2010 07:36
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:This paper is published in the conference proceedings:
Neuhoff, Daniel; Halberg, Niels; Alfldi, Thomas; Lockeretz, William; Thommen, Andreas; Rasmussen, Ilse A.; Hermansen, John; Vaarst, Mette; Lck, Lorna; Carporali, Fabio; Jensen, Henning Hgh; Migliorini, Paola and Willer, Helga, Eds. (2008) .Cultivating the Future Based on Science. Proceedings of the Second Scientific Conference of the International Society of Organic Agriculture Research (ISOFAR), held at the 16th IFOAM Organic World Congress in Cooperation with the International Federation of Organic Agriculture Movements (IFOAM) and the Consorzio ModenaBio, 18 . 20 June 2008 in Modena, Italy.. International Society of Organic Agriculture Research (ISOFAR), c/o IOL, DE-Bonn, Research Institute of Organic Agriculture FiBL, CH-Frick. http://orgprints.org/13672 and http://orgprints.org/13674

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