Response of Bio-organics on Soil Fertility Status, Growth and Yield Parameters of Black Gram (Vigna mungo) var. Shekar 2

An experiment to study the response of bio-organics on soil fertility status, growth and yield parameters of Black Gram (Vigna mungo) was conducted during Zaid (April- July) season in 2021-22 at central research farm department of Soil Science and Agricultural Chemistry, SHUATS, Prayagraj. The Experiment was a randomized block design with having two factors and three levels of both vermicompost and b Neemcake 0,50, and 100% per ha resulting in nine treatments Data collected included soil bulk density, particle density, pore space, water holding capacity, pH, EC, organic carbon, nitrogen, phosphorus and potassium. On both growth and yield parameters of Black gram plant height, number of leaves per plant, pod length, number of pods per plant, test weight, dry weight and grain yield were collected. Treatment 9 which comprised of 100% vermicompost and 100% neem cake at 5 t ha-1 had an effect on physical and chemical properties of soil. Results were significant with maximum values on pore space 48.20% and 46.96%, water holding capacity of 43.22 and 41.98%, organic carbon (%) (0.181and 0.182%) , Nitrogen 264.45 and 265.50 kg ha-1) , Phosphorus 24.82 and 24.15 kg ha-1 and Potassium 186.58 and 178.41 per kg at 0-15 and 15-30 cm soil depths respectively. The same treatment 9 recorded maximum plant height of 34.6; number of leaves per plant of number of branches per plant of 37.33; number of pods of 31.66; test weight of 32.88; dry weight per plant of 21.65; maximum (B:C) ratio of 1:1.56; maximum gross returns of Rs/ha-1 129600 with net profit of Rs/ha-1 74720 per ha highest grain yield of 12.096 per ha 75 DAS respectively. Further experimentation will help to better understand the effects and make desirable recommendations.