Abstract
An incubation experiment was conducted during Kharif, 2018 on bahour soil series of puducherry to study the influence of various fertilizer doses and Soil Test Crop Response (STCR) based Integrated Plant Nutrient System (IPNS) on soil enzymatic activity. The incubation experiment was carried out with ten treatments and three replications. The soil samples were drawn at 0th, 40th and 80th day of incubation and subjected for urease, phosphatase and dehydrogenase enzyme analysis. The results revealed that the application of STCR + IPNS – 180 q ha-1 treatment has improved the activities of Urease (12.08 µg NH4- N g-1h-1), Phosphatase (13.65µg PNP g-1h-1) and dehydrogenase (2.48µg TPF g-1day-1). All the three enzymes activities were increased from the Initial day of incubation to 40th day and later showed decrease at final days.
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