Effect of integrated nutrient management on growth and productivity of brinjal

摘要

The effect of integrated use of organic manure, biofertilizer and chemical fertilizer on nutrient status of soil and productivity of brinjal was studied in a field experiment conducted during 2002-03 with various treatment combinations including FYM,phosphate solubilizing bacteria (PSB), rock phosphate Azoiobacter and inorganic fertilizers. The differences in organic carbon, available N, P_2O_5 and K_2O were significantly influenced. The organic carbon and available N status increased significantlywith conjunctive use of inorganic fertilizers, biofertilizers and FYM. The combined use of organic, biofertilizer and inorganic fertilizers sustained the productivity, Soil available nutrients like N, P_2O_5 and K_2O increased significantly with the application of various organic and microbial sources of nutrients in combination with fertilizers over the fertilizer alone. The highest plant growth parameters and yield of brinjal were recorded with Azotobacter, PSB and FYM alongwith inorganic fertilizers.The native population of PSB in soil was more than that of Azotobacter. Inoculated and fertilizer N added soil had maintained increased microbial population.