Effect on microbial count and micronutrients in soil by application of factory effluent in lateritic soil of Konkan

Abstract

A field experiment was conducted an “effect on microbial population and DTPA extractable micronutrient in soil by application of factory effluent in lateritic soil of Konkan” with Randomized Block Design having nine treatments and three replication at Central Experiment Station, Pangari Block, Wakawali, Dr. B. S. K. K. V., Dapoli, Dist. Ratnagiri during Rabi 2013-14.Effluent (composite sample of digester over flow) from the Saf Yeast company private limited, Gane- Khadpoli, Chiplun District- Ratnagiri was collected and applied to the field. According to the irrigation requirement of spinach, effluent was applied before sowing and after first cutting @ 600 liter/treatment with NPK dose @ 100, 50 and 25per cent with and without fertilizers. Application of effluent at different times with inorganic fertilizers in spinach crop having three numbers of cutting significantly increased microbial population and micronutrients like Fe, Mn, Zn and Cu in soil as compare to only RDF fertilizers. The highest Fe content in soil was observed in treatment T3 at 1st cutting where (application of effluent with 100 % RDF) was applied, treatment T7 at 2nd and 3rd cutting where (application of effluent before sowing and after first cutting + 100 % RDF) was applied. Mn content in soil was observed in T7 at 1st and 2nd cutting, while treatment T6 at 3rd cutting where (application of effluent before sowing and after 1st cutting) was applied. The highest Zn contain in soil was observed in treatment T9 from 1st to 3rd cuttings where (application of effluent before sowing and after 1st cutting + 25% RDF) was applied. Whereas highest Cu in soil was found in treatment T9 at 1st cutting, treatment T3 at 2nd cutting and treatment T5 at 3rd cutting where (application of effluent before sowing + 25% RDF) was applied.