EFFECT OF SEEDLING AGE AND NUMBER OF SEEDLINGS PER HILL ON PERFORMANCE OF AMAN RICE (Binadhan-7)

Abstract

An experiment was conducted at the Department of Crop Physiology and Ecology Research Field and Laboratory, Hajee Mohammad Danesh Science and Technology University, Dinajpur, during the period of July to December, 2011. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. The experiment comprised of two sets of factors such as A: Seedling age (15, 25 and 35 days old seedling); B: Seedling number (2, 4 and 6 seedlings hill’). The plant material Binadhan-7 seeds were used. The results showed that the highest TDM was found from 35 days old seedlings at 20 and 40 DAT and at 60 DAT from 25 days old seedling. The lowest TDM was recorded from 15 days old seedlings at 20, 40 and 60 DAT. The highest TDM was found from 6 seedlings hill ' at 20 and 40 DAT and at 60 DAT, the highest TDM was obtained from 4 seedlings hill’. On the other hand the lowest TDM was observed from 2 seedlings hill” at 20, 40 and 60 DAT. The results showed that at 20-40 DAT, the highest CGR (13.11 gm” day”) was found from 35 days old seedlings and the lowest CGR (8.37 gm” day”) was recorded from 15 days old seedlings. Similar trend was observed in case of 40-60 DAT due to age and number of seedling per hill. The effect of age of seedling on plant height was significant. The highest plant height (117.80 cm) was recorded from 25 days old seedling and the lowest plant height (114.20 cm) was recorded from 15 days old seedling. Yield and yield contributing characters was showed highly significant. The results showed that the highest grain yield (4.20 t ha’') was found when 25 days old seedlings were transplanted.