EFFECT OF INTEGRATED NUTRIENT MANAGEMENT ON THE GROWFH AND YIELD OF BRRI DHAN 29

Abstract

A field experiment was conducted to assess the effect of integrated nutrient management on the growth and yield of BRRldhan29 at the research farm of Sher-e-Bangla Agricultural University, Dhaka-1207 during Boro season 2011-12. T 5 treatment produce the maximum grain yield of 13RRldhan29 due to the application of 100 kg N from urea along with 40 kg N/ha from cowdung. But the effect of cowdung along with nitrogenous fertilizer was the most pronounced than that of vermicompost or nitrogenous fertilizer alone. Similar effects were also observed on N. P. K content and their uptake by BRRI dhan29. The effect of 100 kg N from urea along with 40 kg N/ha from cowdung was statistically identical to treatments 140 kg N/ha from urea, 100 kg N from urea along with 20 kg N from cowdung and 20 kg N/ha as the source of vermicompost, 80 kg N from urea with the combiantion of 60 kg N/ha from cowdung, 80 kg N from urea with the combinaion of 60 kg N/ha as the source of vermicompost and 80 kg N from urea with the association of 30 kg N from cowdung along with 30 kg N/ha from vermicompost. In post harvest soils, the contents of organic matter, total nitrogen, available phosphonis and exchangeable potassium increased due to application of cowdung and vermicompost compared to initial soil. In the contrary, soil pH value decreased slightly as compared to that of initial soil. Application of urea-nitrogen alone slightly decreased the organic matter. The overall results indicate that 100 kg N from urea along with 40 kg N/ha as the source of cowdung was the best treatment in producing higher rice yield with sustenance of soil fertility.