Green Global
Foundation   Journal
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EFFECT OF SPACING AND WEED MANAGEMENT ON THE GROWTH OF BRRI dhan56 (Pages : 20 - 29)

The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during June to October 2013 to examine the effect of spacing of planting and weed management on the growth performance of short duration transplant Aman rice (cv. BRRI dhan56). The experiment consisted of four spacings viz. 25 cm × 10 cm, 25 cm × 15 cm, 20 cm × 10 cm and 25 cm × 20 cm and five weed managements viz. no weeding, one hand weeding at 20 DAT, two hand weedings at 20 and 35 DAT, three hand weedings at 20, 35 and 50 DAT and herbicide pyrazosulfuron-ethyl 10WP. The experiment was laid out in a Randomized Complete Block Design with three replications. At 65 DAT, the highest plant height, maximum number of tillers hill-1, leaf area index and total dry matter were obtained in 25 cm × 15 cm spacing and the lowest ones were obtained at 20 cm × 10 cm spacing. At 65 DAT, the highest plant height, maximum number of tillers hill-1, leaf area index and total dry matter were obtained in three hand weedings and the lowest was found in control. At 65 DAT, maximum number of tillers hill-1 was obtained in 25 cm × 20 cm spacing with three hand weedings, the highest leaf area index was obtained in 25 cm × 15 cm spacing with two hand weedings at 20 and 35 DAT, the highest total dry matter was observed in 25 cm × 15 cm spacing with three hand weedings. Therefore, it can be concluded that short duration Aman rice (cv. BRRI dhan56) can be transplanted at 25 cm × 15 cm spacing with three hand weedings at 20, 35 and 50 DAT to achieve proper growth of Aman rice.Download