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.
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.|
|Type of presentation:||Paper|
|Keywords:||plant biomass nitrogen, nitrate leaching, intercrops, Eastern Austria, legumes,|
|Subjects:|| Crop husbandry > Crop combinations and interactions|
|Research affiliation:||Austria > Univ. BOKU Wien > Sustainable Agr. Systems - IfÖL|
|Deposited By:||Friedel, Dr. Jürgen K.|
|Deposited On:||03 Nov 2005|
|Last Modified:||12 Apr 2010 07:31|
|Refereed:||Peer-reviewed and accepted|
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