Nutrient use efficiency indices as influenced by nutrient management practices under cotton-green gram intercropping system in vertisols

A field study was conducted during 2021-22 at the Research of All India Coordinated Project for Dryland Agriculture (AICRPDA), Dr. Panjabrao Deshmukh Krishi Vidyapeeth, (Dr. PDKV) Akola, Maharashtra (India), on an ongoing long-term experiment initiated in 1987-88 under cotton + green gram (1:1) intercropping system Vertisols. The eight treatments comprised a control, sole use organics and chemical fertilizers, integration with fertilizers to partially substitute Nitrogen (N). results after 35th cycle revealed that uptake N, Phosphorus (P), Potassium (K) significantly higher Integrated Nutrient Management (INM) treatments, particularly T6 T7 where 50 percent N substituted by either gliricidia or Farm Yard Manure (FYM). Further, various parameters nutrient efficiency P, K were also found be INM followed T2 (100% RDF). Therefore, present investigation concludes Vertisols, involves conjoint different sources appears promising strategy improvement fertilizer as whole including Use Efficiency (NUE).