EFFECT OF DIFFERENT DOSES OF ARSENIC AND WATER MANAGEMENT ON GROWTH AND YIELD OF BRRI Dhan36

Abstract

In the Sher-e-Bangla Agricultural University, Dhaka, Bangladesh, a pot experiment was conducted during the period from December 2016 to March 2017 to study the effects of water management practices on growth, yield and arsenic content of BRRI Dhan36 at different levels of soil added arsenic. Four levels of As viz. 0, 2, 4 and 6 ppm were added to soil collected from Sher-eBangla

Agricultural University field. After two weeks of transplanting, two water management practices viz. saturated condition and unsaturated condition were imposed to the rice plants grown in pots which was continued till harvesting. There were 8 treatment combinations such as As + Unsaturated condition, As 1 W 1 =As 1 + Unsaturated condition, As + Unsaturated condition, As 3 W 1 =As 3 + Unsaturated condition, As + saturated condition, As 1 W 2 = As 1 + saturated condition, As 2 W 2 =As + saturated condition, As 3 W 2 =As + saturated condition. The experiment was laid out in Randomized Complete Block Design 3 , the highest grain yield being recorded by As control was found in As control with unsaturated conditions and the lowest yield of 12.33 g pot was in 6 ppm As treated pot with saturated conditions. Again the highest plant height plant height . The adverse effect of As on crop was aggravated due to the saturated condition of soil. Yield is comparatively lower in saturated condition than unsaturated condition.