Effect of Fertilizers Combination on Growth and Yield of Cowpea

The field experiment was conducted during the spring season of 2021 at the experimental fields of the College of Agriculture, Al-Qasim Green University, to evaluate the effect of biological and organic fertilization technologies on the seed yield and related traits of two cowpea (Vigna unguiculata L.) cultivars. The experiment used a factorial arrangement in a randomized complete block design (RCBD). The first factor involved two cowpea cultivars C1: Farmer's Bayader and C2: Hitech Seed, the second factor consisted of different fertilizers combination : F0: chemo-fertilization, F1: organo-fertilization + 1/2 chemo-fertilization, F2: organo-fertilization + chemo-fertilization, F3: bio-fertilization + 1/2 chemical fertilizer, F4: bio-fertilization + chemo-fertilization, F5: bio-fertilization + organo-fertilization + 1/2 chemo-fertilization, F6: bio-fertilization + organo-fertilization + chemo-fertilization, The results showed that C1 performed better in all traits except protein percentage, The F3 excelled in all characteristics. Moreover, the fertilization combination found in treatment (C3 × F3) demonstrated excellence in all study traits.