EFFECT OF TREATED SLUDGE AND CHITOSAN ON GROWTH AND YIELD OF NERICA RICE 10 IN AUS SEASON

Abstract

A field experiment was conducted to assess the effect of treated sludge and chitosan on the growth and yield of NERICA 10 rice at the research farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during Aus season

from urea and then recommended dose of P, K, S, Zn and foliar spray of chitosan(T Treatment) -1 from urea with recommended dose of P, K, S, Zn and foliar spray of chitosan Treatment) 8 Treatment) 2 1 Treatment Treatment) 4

3 Treatment 6 5 Treatment) 7 Treatment) -1 from urea with recommended dose of P, K, S, Zn and foliar spray of chitosan Treatment)wasnot similar to Control Treatment), 100% recommended N i.e.100 kg nitrogen / ha 1 0 Treatment), 75 kg N from urea with 25kg N substituted by sludge Treatment) and 25 kg N from urea with 75 kg N substituted by sludge 4 2 Treatment). In post harvest soils, the contents of total nitrogen, available phosphorus, exchangeable potassium and available sulphur and zinc increased due to application of treated sludge and chitosan compared to initial soil. In the contrary, soil pH value increased slightly as compared to that of initial soil. The overall results indicate that 50kg Nha -1 from urea with recommended dose of P, K, S, Zn and foliar spray of chitosan Treatment) soil fertility,