Mineralisation of crop residues on the soil surface or incorporated in the soil under controlled conditions |
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Authors: | Samuel Abiven Sylvie Recous |
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Affiliation: | (1) Department of Geography, University of Zurich, Winterthurerstrasse 190, 8057 Zürich, Switzerland;(2) UR1158 Unité d’Agronomie, INRA, rue Fernand Christ, 02007 Laon, France |
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Abstract: | In the present work, we compare the effect of mature crop residues mixed into a ferralitic soil or placed as a single layer on soil surface on the mineralisation of C and N over 55 days. As residues, we used dry stems of rice, soybean, sorghum, brachiaria and wheat. There were no significant effects of residue placement on C mineralisation kinetics. Decomposition of the residues on the soil surface slightly increased net N mineralisation for residues having the smallest C/N ratio. |
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Keywords: | Carbon Crop residue Location Nitrogen Mineralisation |
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