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Below ground nitrogen dynamics in the sequence clover-grass maize in the DOK long term experiment

Mayer, Jochen; Oberson, Astrid; Lüscher, Andreas; Frossard, Emmanuel and Hammelehle, Andreas (2014) Below ground nitrogen dynamics in the sequence clover-grass maize in the DOK long term experiment. In: Rahmann, G. and Aksoy, U. (Eds.) Building Organic Bridges, Johann Heinrich von Thünen-Institut, Braunschweig, Germany, 4, Thuenen Report, no. 20, pp. 1031-1034.

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We investigated the effect of organic versus conventional cropping systems on the below ground nitrogen inputs of Trifolium pratense L., its transfer to corresponding grass and the fate in the soil organic matter in the clover-grass ley of the DOK long term experiment, Switzerland. BGN tended to be largest in conventional and organic treatments with standard fertilisation and decreased with lower fertilisation intensity. The largest amount of clover N transferred to grass was observed in the minerally fertilised conventional treatment. Clover N derived from rhizodeposition was rapidly stabilised in all treatments to clay rich fractions and thus clover N will have a relatively low direct N contribution to subsequent nonlegumes.

EPrint Type:Conference paper, poster, etc.
Type of presentation:Speech
Keywords:clover-grass, below ground N, rhizodeposition, N transfer, cropping systems
Subjects: Soil > Nutrient turnover
Research affiliation: Switzerland > Agroscope > ART - Reckenholz location
International Conferences > 2014: 18th IFOAM OWC Scientific Track: 4th ISOFAR Scientific Conference
Deposited By: Mayer, Jochen
ID Code:24030
Deposited On:31 Oct 2014 08:22
Last Modified:31 Oct 2014 08:25
Document Language:English
Refereed:Peer-reviewed and accepted
Additional Publishing Information:urn:nbn:de:gbv:253-201407-dn053621-1

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