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Die vielen Facetten von Zwischenfrüchten

Wittwer, Raphaël; Jossi, Werner and van der Heijden, Marcel (2017) Die vielen Facetten von Zwischenfrüchten. Paper at: 14. Wissenschaftstagung Ökologischer Landbau, Campus Weihenstephan, Freising-Weihenstephan, 07.-10. März 2017.

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Summary

Several studies indicate that cover crops can be used to enhance agricultural sustainability as they provide numerous ecological services in agro-ecosystems. They protect soil against erosion and nutrient losses and compete weeds. Moreover, legume species fix nitrogen (N) from the atmosphere and contribute to next crop nutrition. Hence, cover crops complement the ecological aims of organic agriculture. We investigated the impact of cover crops in different cropping systems (organic and conventional) and soil tillage intensities (plough, reduced and no-tillage) in various field experiments. Moreover, results from an experimental network, which has investigated the behavior of more than 11 cover crops, is included. Results show that
the effects of cover crops were highest under conservation agriculture or organic farming, and decreased with increasing management intensity. The additional N input
by legume cover crops increased the N uptake by the succeeding main crops and cover crops enhanced yield in most of the investigated systems. Cover crops also
decreased weed abundance during the fallow period and, predominantly under organic reduced tillage, could reduce weed pressure in the succeeding main crop. Innovative cropping systems (e.g. organic or conservation agriculture) combined with ecological management tools, such as cover crops, have great potential to reduce environmental impact and maintain productivity.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:ecosystem services, cover crops, reduced tillage, soil biota, weed, Zwischenfrüchte
Subjects: Soil > Soil quality
Crop husbandry > Crop combinations and interactions
Research affiliation: Switzerland > Agroscope
International Conferences > 2017: Scientific Conference German Speaking Countries > Pflanzenbau
ISBN:978-3-89574-925-4
Deposited By: Hasreiter, Anna
ID Code:31868
Deposited On:04 Jul 2017 17:22
Last Modified:04 Jul 2017 17:22
Document Language:German/Deutsch
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:Dieser Beitrag ist im Tagungsband der 14. Wissenschaftstagung erschienen.
S. Wolfrum, H. Heuwinkel, H.J. Reents, u.a. (Hrsg.) (2017): Ökologischen Landbau weiterdenken - Verantwortung übernehmen - Vertrauen stärken. Beiträge der 14. Wissenschaftstagung Ökologischer Landbau, Freising-Weihenstephan, 7.-10. März 2017
Verlag Dr. Köster, Berlin

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