A COMPARATIVE STUDY ON GROWTH AND YIELD OF SOME ELITE HYBRID RICE VARIETIES IN DRY SEASON

Abstract

The experiment was conducted at the research field of Sher-e-Bangla Agricultural University, Dhaka, during the dry season (November, 2012 to June, 2013) to evaluate leaf area development, dry matter accumulation pattern and yield of some popular hybrid rice varieties. The experiment comprised of three hybrid varieties (Hira 2, Aloron and Tia) and an inbred variety BRRI dhan 29 with four dates of transplanting (01 January, 16 January, 31 January and 15 February). The experiment was laid out in randomized complete block design with three replications. Leaf area development, total dry matter production, absolute growth rate, yield and yield contributing characters were significantly influenced by the date of transplanting. Leaf area, total dry matter, absolute growth rate were found higher in early transplanted plots. The highest grain yield (6.07 t ha') was recorded from plots transplanted on 16 January due to increased panicles hi\l"' and grains paniclel.Hira 2 exhibited best result on leaf area (LA), absolute growth rate and total dry matter (TDM) production compared to all other studied varieties and thus recorded with highest grain yield (6.40 t ha"). No difference on grain yield was achieved from Hira2 at oI to 16 January transplanting