Gabhane, Dr. V.V.GADAKH, PRATIKSHA APPASAHEB.2024-01-072024-01-072023-01-24GADAKH, PRATIKSHA APPASAHEB.(2022). Effect of organic sources of nutrients on organic carbon pools , soil fertility and productivity of rainfed cotton in vertisols. Department of Soil Science and Agricultural Chemistry, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola. M. Sc. 2022. Print. xiii, 117p. (Unpublished).https://krishikosh.egranth.ac.in/handle/1/5810205914A field study entitled, “Effect of organic sources of nutrients on organic carbon pools, soil fertility and productivity of rainfed cotton in Vertisols” was conducted during kharif 2021-22 at Research field of AICRP for Dryland Agriculture, Dr.Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra. The soil of the experimental site was Vertisol which was moderately alkaline in reaction, low in available nitrogen, medium in available phosphorus and high in available potassium. The nine treatments replicated three times in randomized block design comprised of 100% RDF (60:30:30 NPK kg ha-1), FYM 12 t ha-1, gliricidia 8 t ha-1, vermicompost 3.0 t ha-1, 50% N through FYM/ vermicompost + 50% N through gliricidia/ vermicompost and 25% N through FYM/ gliricidia + 25% N through vermicompost + 50% N through gliricidia. The results indicated that significantly higher cotton yield was recorded with 100% RDF and was on par with most of the integrated organic treatments. Further, integrated application of 50% N through FYM/vermicompost + 50% N through gliricidia resulted in improvement in soil fertility and soil organic carbon pools. Hence, it is concluded that integrated application of 50% N through FYM/vermicompost + 50% N through gliricidia resulted in improvement in soil fertility, soil organic pools and yield of cotton grown in Vertisols under rainfed conditions.EnglishThesis