Effect of rganic and iorganic sources of nutrient on yield, nutrient uptake and soil fertilizer of maize (Zea mays)-mustard (Brassica compestris) cropping system

In north-eastern region of India, improper and imbalance nutrient use in maize-mustard cropping system leads to poor system productivity. Maize being an exhaustive crop also depletes soil fertility. The study on judicious integrated nutrient management strategy revealed that application of full dose of inorganic fertilizer along with Azolla compost 2.5 tonnes/ha application to maize not only enhanced productivity of maize-mustard cropping system by 90% and 13.4% over the control and recommended N P and K respectively, But also improved soil fertility in terms of higher available N, P, K and organic carbon. This nutrient management option had considered able residual effect on succeeding mustard in terms of yield and income. However, maximum residual effect on mustard in terms of yield attribute and yield was recorded when whole nutrient was applied using organic manure (Azolla compost +farmyard manure).