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Schnittgutabfuhr oder Gründüngung? Auswirkung der Kleegras-Nutzung auf Nitrat im Sickerwasser und Folgefrüchte

Dreymann, Sonja; Loges, Ralf and Taube, Friedhelm (2005) Schnittgutabfuhr oder Gründüngung? Auswirkung der Kleegras-Nutzung auf Nitrat im Sickerwasser und Folgefrüchte. [Forage use or green manure? Impact of grass/clover management on nitrate in the leachate and succeeding crops.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

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Summary

A field experiment was conducted to evaluate the impact of different management systems of grass-clover (various cutting and/or mulching combinations) and date of ploughing (autumn or spring) on the fate of nitrogen (N) and the yield of succeeding wheat. The 3-cut system resulted in nitrate losses below the limit of the EC Nitrate Directive (91/676/EEC), even with ploughing in autumn. When ploughed in spring, treatments with frequent cutting and/or mulching induced nitrate leaching below the critical value. In contrast, losses from swards mulched only once were considerably above the threshold value, independently of ploughing time. With swards mulched and ploughed in autumn, nitrate concentrations exceed the EC-limit. The management of grass-clover swards did not affect the yield of wheat, whereas ploughing in autumn increased the yield. It is concluded, that appropriate grass-clover management and date of ploughing can reduce N-leaching, even in stockless farms.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:Nitrat-Auswaschung, Naturschutz und Umweltverträglichkeit, Pflanzenbau, Pflanzenernährung
Subjects: Crop husbandry > Production systems > Pasture and forage crops
Soil > Nutrient turnover
Crop husbandry > Composting and manuring
Environmental aspects > Air and water emissions
Research affiliation: International Conferences > 2005: Scientific Conference on Organic Agriculture
Germany > Universität Kiel > Department of Crop Production and Plant Breeding > Grassland and Forage Production/Organic Farming
Deposited By: Dreymann, Dipl.-Ing. agr. Sonja
ID Code:3700
Deposited On:05 Mar 2005
Last Modified:12 Apr 2010 07:30
Document Language:German - Deutsch
Status:Published
Refereed:Peer-reviewed and accepted

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