Effect of Temporal Variation in Mineralization of Nutrients through Sewage Sludge, Farm Yard Manure and Vermicompost in Soil

Soil amendment by organic matter (O.M.) has been widely accepted as an efficient nutrient-management technique in agriculture. The study was conducted pot culture experiment at the Rajiv Gandhi South Campus, Barkachha Banaras Hindu University (B.H.U.) Mirzapur, which is located Vindhyan zone of Mirzapur district 25º 10” latitude, 82º 37” longitude with altitude 427 meters above sea level. soils region are mostly having poor fertility and shallow depth. Different sources manures Sewage Sludge (S.S), Farm Yard Manure (FYM) Vermi-Compost (V.C.) different doses (10, 20 30 grams) were applied along soil incubated for 90 days. Required amount water added to order keep it moist when required. pH, electrical conductivity(E.C) , O.M. nutrient content (N, P, K S) had shown significant changes due treatments soil. Applications amendments this indicated considerable basic physio-chemical properties, levels available their release pattern. With increase S.S V.C. pH also increased but, decreased FYM. Increase dose S.S., F.Y.M. E.C. N incubation interval. P from Days After Incubation (DAI) 60 DAI but DAI. Availability S duration period.