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The fertility of sandy soils in the Sahelian zone (SZ) is extremely low. This poor soil fertility is one of the limiting factors of crop production in the SZ. Therefore, it is imperative to improve or to maintain soil fertility through various agricultural management methods. Further, it is well known that soil organic matter plays an important role in(More)
Soil organic matter in the Sahel is severely reduced by continuous cultivation. Reductions of soil organic matter decrease in turn soil productivity. Nonetheless, reports show that organic matter application in the Sahel improves crop yield. However, long-term effects of organic matter application on soil fertility have not been fully studied. In(More)
We conducted on-farm participatory experiments over three years at six villages in the Fakara commune of Western Niger to demonstrate, verify, and evaluate the relevance of soil fertility management methods based on millet/cowpea intercropping. We tested six methods using one of three organic fertilizers (millet husks, manure, or neither) with or without(More)
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