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Soil fertility depletion is a major constraint for agricultural productivity under smallholder farming systems in sub-Saharan Africa.
The NUTMON toolbox was used to determine on-farm nutrient balances in Central Uganda to come up with plausible recommendations to advance increased soil productivity and household food security and incomes among smallholder farming systems in Wakiso district.
Farm balances for major nutrients (N, P, K) at crop level (Primary Production Units – PPU) for major crops i.e. banana, sweat potatoes, beans and maize were all negative during the monitoring period, thus indicating a net mining of nutrients through crop harvest.