EFFECT OF FLAG LEAF REMOVAL ON GROWTH AND YIELD OF SIX MODERN RICE VARIETIES IN AMAN SEASON

Abstract

The experiment was conducted at the Experimental Field of Agricultural Botany Department, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh, during July to November, 2016 to study effect of flag leaf removal on physiological characteristics and yield of six modern rice varieties in Aman season. The six varieties are BARI Dhan32, BARI Dhan33, BARI Dhan39, BARI Dhan54, BARI Dhan56 and BARI Dhan62. The experiment was laid out in Randomized Complete Block Design with four replications. All the test varieties exhibited superiority in control condition. At harvest, the tallest plant

2

2 and 46.95 cm 2 , respectively -1 were observed from BARI dhan54. Among test Aman rice varieties, higher grain yield and biological yield were also achieved from BARIdhan54. Chlorophyll content

, filled grains panicle -1 , weight of 1000 grains, grain yield, straw yield, biological yield were recorded from BARIdhan54 under control condition. The removal of the flag leaf reduced grain yield from 17.00 % to 27.70 % in the test Aman rice varieties.