EFFECT OF SEEDLING AGE AND WATER MANAGEMENT ON PERFORMANCE OF BRRIdhan 28

Abstract

A field experiment was conducted at the research farm of Crop Physiology and Ecology Department, Hajee Mohammad Danesh Science and Technology University (HSTU), Dinajpur during November 2010 to May 2011 to find out the effect of age of seedlings and water management on tillering behavior, growth dynamics, and yield and yield contributing characters of BRRIdhan 28. The experiment was laid out in two factors randomized complete block design with four replications taking two seedling age (15 and 30 days old) at transplanting and two water management (continuous flooding and intermittent irrigation) as the factors. 15 days old seedling provided greater ability of tiller production, dry matter accumulation and to produce more leaf area of BRRIdhan than those of 30 days old seedling but the ability was influenced more with intermittent irrigation than continuous flooding. Transplanting of younger seedling provided more effective tillers hill’, filled grains panicle’, thousand grain weight and finally grain yield than those of older one but the younger seedling interacted with intermittent irrigation significantly to explore all of these parameters. 15 days old seedling of BRRIdhan 28 took shorter time to be matured than 30 days old seedling in both continuous flooded and intermittent irrigated condition. Again the crop matured 2 days earlier in intermittent irrigated plot than continuous flooded plot for both 15 and 30 days old seedling. Finally it may be concluded that transplanting of younger seedling in combination with intermittent irrigation performed the best in tillering production, growth dynamics, and yield and yield contributing characters of BRRIdhan 28.