Nitrogen uptake in cotton+greengram intercropping system as influenced by integrated nutrient management

The field experiments on cotton+greengram intercropping were conducted during the kharif seasons of 2000-01 and 2001-02 under rainfed condition in randomized block design with three replications to study the effect of integrated nutrient management on nitrogen content of seed, straw and nitrogen uptake of seed, straw and total uptake of cotton and greengram individually as well as in cotton+greengram intercropping system. The results revealed that nitrogen content in seed was improved by application of inorganic, organic and INM. There was, however, no significant difference between inorganic and integrated nutrient management. Nitrogen content in straw was improved by integrated nutrient management treatments. Effect of FYM was greater than Leucaena. Total uptake of nitrogen was increased by integrated nutrient management using FYM over inorganic fertilizer alone. Integrated nutrient management recorded 3.2 and 3.8 kg/ ha increased nitrogen uptake during 2000-01 and 2001-02, respectively.