Fertilizer use optimization approach: An innovation to increase agricultural profitability for African farmers

Abstract

… 5 kg 1.4 kg 3 kg Compost, per 1 t/ha dry wt … It is assumed grain prices per kg (Ksh): 25 maize; 60 beans, 25 sorghum and 30 Irish potato. • It is assumed 50 kg of fertilizer costs (Ksh): 2850 urea and 3600 DAP … For maize, sidedress with 43 kg urea (1 lid for 0.6m) at 6 WAP …