Farthofer, R.; Friedel, J. K.; Pietsch, G.; Rinnhofer, T.; Loiskandl, W. and Freyer, B. (2004) Plant biomass nitrogen and effects on the risk of nitrate leaching of intercrops under organic farming in Eastern Austria. Paper at: EUROSOIL 2004, Freiburg, Germany, Sept. 4th to 12th.
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Summary
Data on the potential of intercrops to reduce soil nitrate contents, on their N accumulation and biological nitrogen fixation (BNF) are lacking for organic farming in the dry, pannonic region of Eastern Austria. The effect of legumes, non-legumes, and legumes + non-legumes used as intercrops on inorganic soil nitrogen, crop yield and biomass N, and BNF were tested in comparison to bare fallow. Non-legumes and legumes + non-legumes were more efficient than legumes in reducing inorganic soil N contents in autumn and nitrate contents in soil solution from the subsoil in winter. This reduction in inorganic soil N did not last until March of the following year due to an N mineralisation from the mulch. The legume + non-legume mixture contained a larger amount of crop N than both legumes and non-legumes. This was due to the combined effect of soil-N uptake by the non-legumes and BNF by the legumes in the mixture.
EPrint Type: | Conference paper, poster, etc. |
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Type of presentation: | Paper |
Keywords: | plant biomass nitrogen, nitrate leaching, intercrops, Eastern Austria, legumes, |
Subjects: | Crop husbandry > Crop combinations and interactions Soil |
Research affiliation: | Austria > Univ. BOKU Wien > Sustainable Agr. Systems - IfÖL |
Related Links: | http://bokudok.boku.ac.at/bokudok/search_project.show_project?project_id_in=4071 |
Deposited By: | Friedel, Dr. Jürgen K. |
ID Code: | 5789 |
Deposited On: | 03 Nov 2005 |
Last Modified: | 12 Apr 2010 07:31 |
Document Language: | English |
Status: | Published |
Refereed: | Peer-reviewed and accepted |
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