Effect of integrated use of inorganic fertilizers and FYM or green leaf manure on uptake and nutrient use efficiency of rice-rice system on an inceptisol

The effect of integrated use of inorganic fertilizers and FYM or green leaf manure (GLM) on uptake and nutrient use efficiency of rice-rice system on an Inceptisol in Kar and Pishanum seasons of southern districts of Tamil Nadu was studied in a field experiment conducted with various treatment combinations including continuous application of plant nutrients either singly or with organic manures on nutrient uptake and nutrient use efficiency. Over 10 years of continuous cropping under various treatments, the differences in nutrient uptake and nutrient use efficiency of major nutrients in inorganic fertilizers alone and inorganic fertilizers with organics were significant. The continuous use of organics (FYM/GLM) along with inorganic fertilizers increased nutrient uptake and nutrient use efficiency of major nutrients than did the inorganic fertilizers