Combined application of vermicompost and mineral K fertilizer improves root yield of sweet potato [ Ipomoea batatas (L.) Lam] in Southern Ethiopia
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The high cost of mineral fertilizers, lack of credit, and delivery delays constrain crop production in the developing world like Ethiopia. Farmers apply little or no fertilizer to sweet potatoes leading to lower root yield (8 t ha-1) compared with 60 t ha-1 in... ...
