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Einfluss der Düngung mit Gärrückständen aus der Biogaserzeugung auf den Ertrag von Silomais und auf die bodenmikrobielle Aktivität

Kautz, Timo and Rauber, Rolf (2007) Einfluss der Düngung mit Gärrückständen aus der Biogaserzeugung auf den Ertrag von Silomais und auf die bodenmikrobielle Aktivität. [Effects of biogas slurry on yield of maize for silage and on soil microbial activity.] Paper at: Zwischen Tradition und Globalisierung - 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Stuttgart, Deutschland, 20.-23.03.2007.

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Summary

Organic manuring with slurry from biogas plants may contribute to plant nutrition and maintenance of soil fertility in organic farming. However, the chemical properties of biogas slurry depend markedly on substrate input and process technology. The aim of this study was to gain more insights into the relationship between the quality of biogas slurry and its influences on plant and soil parameters when applied as organic ma-nure. We studied the effects of slurries from two different biogas plants on yield of maize and soil microbial activity in a two-year field experiment. The investigation took place on a loam-clay soil near Göttingen, Lower Saxony. Biogas slurry A was obtained from a biogas plant with liquid pig manure as main input, slurry B originated from a biogas plant operated with renewable primary products. Slurries were applied as 30 and 60 m3 ha-1 respectively. Highest yield of maize was obtained in the treatment with slurry B when given as 60 m3 ha-1. N content in biomass of maize was the highest in the treatment with slurry A (60 m3 ha-1). β-glucosidase activity was not affected by any of the slurries. Conversely, both slurries were found to significantly increase dehydro-genase activity as well as total soil C and N contents.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:Pflanzenbau, Bodenfruchtbarkeit, Pflanzenernährung, Betriebssysteme, Gärrückstände
Subjects: Soil > Soil quality > Soil biology
Crop husbandry > Composting and manuring
Research affiliation: 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
Deposited By: Kautz, Dr. Timo
ID Code:9854
Deposited On:12 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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