| Registro completo |
| Provedor de dados: |
Organic Eprints
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| País: |
Germany
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| Título: |
Positive Mischungseffekte auf Ertrag und Stickstoffversorgung in Klee-Gras-Mischungen
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| Autores: |
Huguenin-Elie, Olivier
Nyfeler, Daniel
Suter, Matthias
Frossard, Emmanuel
Lüscher, Andreas
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| Data: |
2009
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| Ano: |
2009
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| Palavras-chave: |
Pasture and forage crops
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| Resumo: |
High plant species richness has been shown to positively influence grassland biomass production. In mixtures containing two forage grass and two forage legume species we quantified the diversity-productivity effect and the nitrogen economy of the swards across a broad range of species proportions. Positive diversity-productivity effects resulted in higher yield (up to +35%) of the four-species grass-clover-mixtures than the highest yielding monoculture (transgressive overyielding). The diversity-productivity effect depended on the species proportion in the mixture and was maximal in well balanced mixtures with a clover proportion of 40 – 60%. Transgressive overyielding was significant over a fairly wide range of clover proportions. Well balanced grassclover- mixtures allowed obtaining up to 320 kg N ha-1 yr-1 deriving from symbiotic N2 fixation and allowed an optimal transformation of fixed N into dry matter yield. These mixtures allowed benefiting from maximal fixation activity of the legumes without reducing the uptake of N from soil and fertiliser by the grasses in the sward.
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| Tipo: |
Conference paper, poster, etc.
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| Idioma: |
deu
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| Identificador: |
http://orgprints.org/14416/1/HugueninElie_14416.pdf
Huguenin-Elie, Olivier; Nyfeler, Daniel; Suter, Matthias; Frossard, Emmanuel and Lüscher, Andreas (2009) Positive Mischungseffekte auf Ertrag und Stickstoffversorgung in Klee-Gras-Mischungen. Paper at: 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.
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| Relação: |
http://orgprints.org/14416/
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| Formato: |
application/pdf
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