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Abstract
In an arenosol of the central part of northern Senegal, the microbial biomass expressed as mg C·kg −1 soil (BM-C) using the chloroform-fumigation incubation method was studied in two long term field trials respectively at Bambey and Thilmakha. BM-C expressed as percent of total soil organic C was higher than in temperate soils. The BM-C and the non-hydrolysable non-distillable nitrogen (Nhnd) were found to be correlated for both agrosystems. Agricultural activity (farmyard manuring and ploughing) did significantly increase these two parameters. The BM-C increased during the rainy season. This might be a key factor in the nitrogen flush at the onset of the rainy season in dry tropical areas, which is essential to the installation of the crop.
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Schedule a callMore From: Comptes Rendus de l'Academie des Sciences Series IIA Earth and Planetary Science
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