Influence of Crop Residue in Addition to Decomposition Enhancers on Soil Nitrogen Transformation and Available Macronutrients Status during Growth of Maize

Abstract

A Greenhouse experiment was conducted on loamy sand soils of Agricultural College, Rajendranagar, Hyderabad during rabi 2021-2022 to find out the influence of crop residues in addition to decomposition enhancers on soil nitrogen transformation and available macronutrients status during growth of maize. The crop residues were incorporated in soil during sowing of maize either alone or in combination with decomposition enhanceres (microbial consortia and single super phosphate). The nitrogen transformation and macronutrients assayed at different intervals of maize were significantly increased by the application of crop residue along with microbial consortia. At 30 DAI, 60 DAI and 90 DAI among the treatments, the highest ammonical and nitrate nitrogen and macronutrient status of were recorded with T9 (T5 + as Microbial consortium @ 1.5%) and it was on par with the treatment T13 (T5 + as Single Super Phosphate @5%). At 120 DAI among the treatments highest ammonical and nitrate nitrogen and macronutrient status of were recorded with T8 (T4+ as Microbial consortium @ 1.5%,) and it was on par with the T6 (T2+ as Microbial consortium @ 1.5 %). At all intervals the lowest ammonical and nitrate nitrogen and macronutrient status were recorded in control (T1). Incorporation of crop residues along with microbial consortium before sowing has significant effect on growth and yield of maize when compared to residue alone.