Study of Reducing Chemical Fertilizers and Enhancing by Organic and Biological Fertilizers for Cowpea Crop

Abstract

Abstract The experiment was carried out in the experimental field of the College of Agriculture, Al-Qasim Green University, during the spring season of 2021, to study the effect of biological and organic fertilization technology on the production of seed yield for two varieties of cowpea. A factorial arrangement in randomized complete block design with three replications was used, first factor was included varieties of cowpea (Farmer’s Bayader - Hitech Seed), the Second factor was included: S0: only chemical fertilizer, S1: organic fertilizer + half chemical fertilizer, S2: organic fertilizer + all chemical fertilizer, S3: bio-fertilizer + half chemical fertilizer, S4: bio-fertilizer + all chemical fertilizer, S5: bio-fertilizer + organic fertilizer + half chemical fertilizer, S6: bio-fertilizer + organic fertilizer + all chemical fertilizer. The V1 cultivar excelled in all characteristics except number days to flowering and seed 300 weight, The S3 was excelled in all characteristics, A linear relationship was found in treatment (V1 × S3) in all characteristics of the study.