Ibikunle, A M.Petu, Agriculture Department, Ramat Polythecnic, Maiduguri, Borno State, Nigeria, Nigeria
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Vol 5, No 4 (2009): African Journal Of General Agriculture - Articles
Effect of rate and time of nitrogen application on the performance of cowpea Vigna unguiculata (L) Walp in the northern guinea savannah zone of Nigeria
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