Mineralisation of crop residues on the soil surface or incorporated in the soil under controlled conditions
Abiven, Samuel ; Recous, Sylvie
In: Biology and Fertility of Soils, 2007, vol. 43, no. 6, p. 849-852
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- 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 55days. 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