Response of Two Maize (Zea mays L.) Varieties to Times of NPK (15-15-15) Fertilizer Application

Nitrogen rate and time of application are among the major abiotic factors limiting productivity maize. The research was, therefore, carried out to examine response two maize varieties (Omankwa Pioneer hybrid) four different times N : P K 15 fertilizer during growing season in Ghana. experiment was arranged a randomized complete block design with eight treatment combinations three replications. Our findings showed that responded differently. interactive effect indicated planting produced highest grain yield (4.7 tons ha−1) Omankwa (open-pollinated variety) while fertilizers two/four weeks after increased (6.5 hybrid. growth parameters were not significantly affected by combinations. In order for farmers obtain good yield, it is recommended should apply variety 14/28 days hybrid