Effect of integrated nutrient management in maize and residual effect on succeeding chick pea under irrigated conditions.

摘要

The effects of organic fertilizers (farmyard manure, sunn hemp, maize straw, poultry manure and vermicompost) and NPK fertilizer rate (50, 75 or 100% of the recommended 150:75:37.5 kg/ha) on the performance of maize and chickpea were studied in Siruguppa, Karnataka, India, during the kharif and rabi seasons from 2003-04 to 2005-06. The organic manures had direct effect on maize and residual effect on chickpea during the third year. The increase in the NPK fertilizer rate (RFR) from 50 to 100% of the recommended rates increased the grain yield of maize. The application of poultry manure at 1.0 t ha-1 with 100% RFR to maize and 50% RFR to chickpea was optimum, resulting in the highest chickpea grain yield (1370 kg ha-1). The application of poultry manure and 100% RFR recorded the highest level of system productivity (8201 and 8480 kg ha-1, respectively), sustainability index (77.1 and 74.4, respectively) and water use efficiency (17.08 and 17.67%, respectively) in maize.