IMPACT OF DISTILLERY SPENT WASH APPLICATION ON SOIL HEALTH UNDER PEARL MILLET CROPR. JayashreeAbstract The Post Biomethanated Distillery Spent wash (PBDSW) is effective organic liquid manure derived from sugar industry waste materials. Spent wash contains high amount of nutrients like Nitrogen, Phosphorus, Potassium, Calcium and Sulfur. In addition, it contains sufficient amount of micronutrients such as Iron, Zinc, Copper, Manganese, Boron and Molybdenum. The land application of spent wash offers benefits of water pollution control and utilization for agricultural production. The field experiment was conducted with different doses of Post Biomethanated Distillery Spent wash (PBDSW) as a source of nutrients in various proportions with inorganic fertilizer under pearl millet crop. The highest mean value of soil organic carbon (0.73 per cent) was recorded in T2 (PBDSW at the rate of 100KL ha-1 along with recommended dose of NPK) (0.73 per cent). The soil available Nitrogen, Phosphorus and Potassium markedly increased due to the application of distillery spent wash. The mean available NPK content ranged from 165.0 to 203.6 kg ha- 1, 16.8 0 to 20.40 kg ha-1 and 237.33 to 493.33kg ha-1 respectively. Spent wash application significantly improved the enzymatic activity (Urease, phosphatase and dehydrogenase) compared to the control treatment which enhance the soil health in turn crop productivity. |