Impact of in situ rice straw incorporation on soil nutrient dynamics and carbon cycling

Abstract

This study investigates the impact of in situ rice straw incorporation on soil nutrient dynamics during the 2021-22 kharif season in Sindewahi, Maharashtra. Using a Factorial Randomized Block Design, two microbial treatments-PDKV decomposer and Resident Isolates-were tested along with three nutrient management levels. The data revealed that during decomposition of in situ incorporated rice straw total N, total P and total K were increased. The data of the present experiment revealed that the total C were gradually decreased in the rice straw treated with PDKV decomposer and resident isolates. Whereas total, P, and K were slightly increased in soil in situ incorporated with rice straw and treated with PDKV decomposer and resident isolates indicating progressive increase/decrease in the elemental composition. The magnitude of decrease in the total C was 0.057% during decomposition of crop residue in soil. Among total N, P and K, the magnitude of increase was higher in case of total K which was 0.00082% during decomposition.