Effect of Integrated Nutrient Management on Soil Properties and Crop Yield under Black Gram-Wheat Cropping System in a Typic Haplustept

Abstract

Field experiments were conducted during 2003-04 and 2004-05 to develop suitable integrated nutrient supply system for black gram-wheat cropping system. The study was aimed to find out the effect of integration of chemical source of phosphorus with bio-fertilizers on black gram and their residual effect on succeeding wheat crop at Udaipur. Incorporation of FYM @ 5 t ha-1 considerably decreased the bulk density and increased the porosity, cation exchange capacity, organic carbon and available N, P and K status of the soil. Study showed the application of FYM @ 5 t ha-1 or application of 40 kg P2O5 ha-1 significantly increased the seed and stover yield of black gram as well as of succeeding wheat grown in sequence. Dual inoculation (PSB + VAM) to black gram also increased the yield of black gram and succeeding wheat crop grown in sequence. Key words: INM, bulk density, NPK, C.E.C., organic carbon, productivity, black gram, wheat.