Impact of organic nutrient management on growth and yield of cowpea (Vigna unguiculata L.)

In order to determine the "Impact of Organic Nutrient Management on Growth and Yield of Cowpea (Vigna unguiculata l.)" a field experiment was carried out at the Crop Research Farm, Department of Agronomy, SHUATS, Prayagraj, (U.P.) during the Zaid season of 2024. Jeevamrut at 400 l/ha, 500 l/ha, and 600 l/ha, Farm Yard Manure at 10 t/ha, 15 t/ha, and 20 t/ha, and absolute control were among the treatments. Ten treatments, each replicated three times, were used in the Randomized Block Design (RBD) experiment. The findings showed that Treatment 5 (FYM 15 t/ha + Jeevamrut 500 l/ha) had the highest plant height (57.02 cm), maximum dry weight (26.17 g) was recorded in Treatment 7 (FYM 10t/ha + Jeevamrut 600 l/ha), In comparison to other treatments, the highest number of nodules/plant (17.8), seeds/pod (9.6), and seeds yield (8.8 q/ha) were recorded in Treatment 1 (FYM 10t/ha + Jeevamrut 400 l/ha), the highest number of pods/plant (16.7) was recorded in Treatment 9 (FYM 20t/ha + Jeevamrut 600 l/ha), at post-harvest, the highest test weight (118.7g) was recorded in Treatment 4 (FYM 10t/ha + Jeevamrut 500 l/ha), and the highest straw yield (20.4 q/ha) was recorded in Treatments 1 and 8. Treatment 1 (FYM 10t/ha + Jeevamrut 400 l/ha) had the highest B:C ratio (1.86), whereas Treatment 8 (FYM 15t/ha + Jeevamrut 600 l/ha) had the highest gross return (INR 149943.6/ha).