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Amino acid and soil organic matter content of topsoil in a long term trial with farmyard manure and mineral fertilizers

Scheller, Edwin and Raupp, Joachim (2005) Amino acid and soil organic matter content of topsoil in a long term trial with farmyard manure and mineral fertilizers. Biological Agriculture & Horticulture, 22, pp. 379-397.

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Summary

Commencing in 1980, a long-term experiment is carried out to compare mineral fertilizers (MIN), composted manure (CM) and composted manure with application of biodynamic preparations (CMBD) at three different fertilizer application rates. With mineral fertilizer the lowest contents of 0.80% C and 0.069% N, with manure 0.90% C and 0.080% N, and with manure and biodynamic preparations 1.08% C and 0.094% N were achieved in the topsoil. 42.9 to 53.7% of Nt was bound in 18 protein amino acids including asparagine and glutamine. Amino acid contents in the hydrolysates of the topsoil were significantly different according to fertilizer type: MIN < CM < CMBD. The higher contents in manure fertilized plots were observed even at the lowest rate of fertilizer application. This indicates that differences between the treatments do not depend only on the amino acid supply from manure, but are also influenced by a changed amino acid metabolism in the soil.


EPrint Type:Journal paper
Keywords:farmyard manure, humus quality, carbon, nitrogen, protein
Subjects: Soil > Soil quality > Soil biology
Crop husbandry > Composting and manuring
Research affiliation: Germany > Institute for Biodynamic Research - IBDF > Farmyard Manure
Germany > Institute for Biodynamic Research - IBDF > Soil Life
Related Links:http://www.bahjournal.btinternet.co.uk/, http://www.ibdf.de/v1/indexe.htm
Deposited By: Raupp, Dr. Joachim
ID Code:4840
Deposited On:25 May 2005
Last Modified:12 Apr 2010 07:30
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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