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Bewirtschaftungsfreie Zeitfenster für den Naturschutz - Auswirkung auf die N2-Fixierleistung von Luzernebeständen

Pietsch, Gabriele; Hrbek, Regina; Schmutzer, Gerd and Friedel, Jürgen K. (2007) Bewirtschaftungsfreie Zeitfenster für den Naturschutz - Auswirkung auf die N2-Fixierleistung von Luzernebeständen. [Periods without soil management for nature conservation – effects on nitrogen fixation of Lucerne crops.] Poster at: Zwischen Tradition und Globalisierung - 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Stuttgart, Deutschland, 20.-23.03.2007.

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Summary

We studied the effect of a mulching regime optimised with respect to nature conserva-tion on yield and nitrogen fixation rate of Lucerne. The first harvest was two weeks earlier and the second harvest was two weeks later than usual. At the first harvest in 2004, the shoot yield from the nature conservation variant was significantly lower than the yield from the usual treatment. At the second harvest date in 2004, there where no differences. The total nitrogen fixation in 2004 did not differ between the treatments. In 2005, both shoot yield and total nitrogen fixation showed no differences between the two variants as well. From this study it can be concluded that a displacement of mulching dates of Lucerne in most cases will have no significant effect on the total nitrogen fixation and percentage of N derived from the air. A negative effect, like at the first harvest in 2004, is only to be expected if weather conditions are moist until the first harvest and extremely dry further on until the second harvest. The results were used in recommendations for the agricultural practice to diminish the mortality rate of wild game and were regarded in the agricultural legislation in Austria.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:Pflanzenbau, Pflanzenernährung, Bodenfruchtbarkeit, Naturschutz und Umweltverträglichkeit, Luzerne
Subjects: Soil > Nutrient turnover
Crop husbandry > Production systems > Cereals, pulses and oilseeds
Crop husbandry
Crop husbandry > Soil tillage
Research affiliation: Austria > Univ. BOKU Wien > Sustainable Agr. Systems - IfÖL
International Conferences > 2007: Scientific Conference on Organic Agriculture > 1 Plant and Soil > 1.5 Plant nutrition, soil fertility, fertilizers, farm yard manure
International Conferences > 2007: Scientific Conference on Organic Agriculture > 1 Plant and Soil > 1.1 Crop production and soil tillage
Deposited By: Gollner, Dr. Gabriele
ID Code:9390
Deposited On:11 May 2007
Last Modified:12 Apr 2010 07:34
Document Language:German - Deutsch
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:Die endgültige Version des Beitrags ist veröffentlicht in:
S. Zikeli, W. Claupein, S. Dabbert, B. Kaufmann, T. Müller und A. Valle Zárate, Hrsg. (2007)
Zwischen Tradition und Globalisierung – 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Deutschland, 20.-23. März 2007, http://orgprints.org/10742/

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