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Zwischenfrüchte als wichtiges Puzzleteil für den pfluglosen ökologischen Landbau 21
Wittwer, Raphaël; Dorn, Brigitte; Jossi, Werner; Zihlmann, Urs; van der Heijden, Marcel G.A.
The preservation of soil and soil fertility are two major concerns in order to sustain food productivity. An increasing number of studies performed in conventional farming systems indicate that reduced soil tillage can increase the quality of agricultural soils. However, until now it is unclear whether reduced soil tillage can be used to develop sustainable organic farming systems. A long-term experiment was set up in 2009 at the research station Agroscope Reckenholz-Tänikon (ART) to compare conventional and organic farming systems with and without ploughing, and to assess the contribution of cover crops in reduced tillage systems. First results show that the cultivation of cover crops has a positive impact on weed suppression and yield of winter wheat and...
Tipo: Conference paper, poster, etc. Palavras-chave: Crop combinations and interactions; Soil tillage.
Ano: 2013 URL: http://orgprints.org/21340/1/21340_Wittwer.pdf
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Bioackerbau fördert Bodenbiodiversität: Artenvielfalt von nützlichen Mykorrhizapilzen in landwirtschaftlichen Böden 21
van der Heijden, Marcel G.A; Verbruggen, Erik; Zihlmann, Urs; Oehl, Fritz.
The effects of organic and conventional arable farming on the species richness of beneficial soil fungi (arbuscular mycorrhizal fungi) was assessed in 26 arable fields on sandy soil in the Netherlands and in 2 arable fields on a loamy soil in Switzerland. Organically managed fields contained on average 42% more mycorrhizal fungal species than their conventional counterparts. This study shows that organic arable farming has a positive impact on the species richness of these beneficial soil fungi
Tipo: Conference paper, poster, etc. Palavras-chave: Soil biology.
Ano: 2011 URL: http://orgprints.org/17550/2/Heijden%2Dv.d._17550.pdf
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Der Einfluss symbiotischer Bodenpilze auf den Stickstoffzyklus 21
Bender, Franz; Conen, Franz; Neftel, Albrecht; Oberholzer, Hans-Rudolf; Olbrecht, Luise; Jocher, Markus; Rollog, Mark; van der Heijden, Marcel G.A.
To increase nutrient use efficiency and reduce nutrient losses are key aspects for sustainable agriculture. Arbuscular mycorrhizal fungi (AMF) are an import and widespread group of plant-symbiotic soil fungi. Here we investigate the role of those soil microorganisms, for effective nutrient recycling. We conducted greenhouse and lysimeter experiments to compare the cycling of important plant nutrients in systems with high and low abundance of AMF. AMF increased plant N nutrition, reduced leaching losses of mineral N, and prevented emissions of N2O, an important greenhouse gas. The results show the importance of AMF for an effective nutrient management. Farmers should implement strategies to promote AMF in the soil, as they are an indispensable compound of...
Tipo: Conference paper, poster, etc. Palavras-chave: Soil biology; Nutrient turnover; Air and water emissions.
Ano: 2013 URL: http://orgprints.org/21514/1/21514_Bender.pdf
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