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The aim of the study was to evaluate the effect of different rates of nitrogen (0, 10, 20, 30 and 40 kg N/ha) and phosphorus (0, 15, 30 and 45 kg P2O5/ha) fertilizers application on growth and yield performance of cowpea (variety Asontem). A factorial experiment was conducted in randomized complete block design with three replicates at the plantation site of Department of Crop and Soil Sciences, Kwame Nkrumah University of Science and Technology, Ghana in the major cropping season of 2014. No significant effect of N and P fertilizer application on cowpea growth and yield was reported in present study. It is thus recommended that there is no need to apply N to cowpea planted in the same fertility status fields as in the present experimental site. Further studies required to be conducted with higher P rates.

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