Response of integrated nutrient management on yield and chemical properties of soil under rice-Wheat Cropping system

Abstract

A field experiment was conducted to study the effect of inorganic fertilizers coupled with organic amendments on organic carbon, available N, P and K in a typic Hapludoll soil. The rice-wheat cropping system significantly improved the organic carbon content and available N, P and K status of the soil over control with crop. The addition of organic nitrogen through 10 t ha-1 of FYM or biogas slurry and addition of phosphorus and potassium through inorganic fertilizer to the rice-wheat cropping system are quite beneficial over addition of inorganic fertilizer alone. The highest amount of organic carbon, available nitrogen and available phosphorus content in soil was observed due to the application of 100% NPK+ wheat straw. Application of various inorganic fertilizers + organic amendments to rice-wheat cropping system remarkably significantly increased the organic carbon, available N, P and K status of soil.