Vol. 11, Issue 5 (2022)

Author(s):
Poonam Raykar, BM Kamble, Sheetal Tatpurkar and PN Gajbiye

Abstract:
The study of nutrient availability from various organic manures and in combination with inorganic fertilizer of nitrogen is critical for ensuring enough nutrient availability to crop plants at the right time and in the right quantity. To assess the nutrient release pattern from several organic manures including FYM, vermicompost, poultry manure, press mud compost, inorganic N sources viz; urea, calcium nitrate and organic manures a laboratory incubation experiment was in an Inceptisols. Organic manure's were applied based on the nitrogen content. The release pattern of available nitrogen, phosphorus, potassium, DTPA extractable Zn, Fe, Cu and Mn in soil incubated with various organic manures and inorganic sources at various days (0,15,30,45,60,75,90) under controlled aerobic conditions was determined using a factorial completely randomized design with replicated thrice. The after complete incubation were analyzed various soil nutrients. The study revealed the soil pH did not differ significantly due to application of different nitrogen sources and its combinations. The highest value of EC (0.62 dS m^-1), organic carbon (0.58%) and CaCO3 (4.91%) were observed due to application of poultry manure. Similar trend were also observed due to application of calcium nitrate inorganic N source after incubation period. The highest available N and P content in soil was found in application of urea and calcium nitrate, respectively after incubation period. The significantly highest available nitrogen content was recorded with poultry manure and soil available phosphorus and potassium content with vermicompost. The DTPA extractable Fe of soil is significantly influenced by different organic amendments.