Green Global
Foundation   Journal
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EFFECT OF SPACING AND WEEDING REGIMES ON YIELD AND YIELD ATTRIBUTES OF BRRI dhan56 (Pages : 1 - 9)

The experiment was conducted at the Agronomy Field Laboratory of Bangladesh Agricultural University, Mymensingh during June to October 2013 to examine the effect of spacing and weeding regimes on yield and yield attributes of short duration transplant Aman rice (cv. BRRI dhan56). Treatments were four spacings viz. 25 cm × 10 cm, 25 cm × 15 cm, 20 cm × 10 cm and 25 cm × 20 cm and five weeding regimes 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 following treatments were arranged in Randomized Complete Block Design with three replications. Results from the study noticed that the number of effective tillers hill-1, grains panicle-1, grain yield and harvest index were the highest in 25 cm × 15 cm plant spacing and three hand weedings (at 20, 35 and 50 DAT) plots and the lowest was 20 cm × 10 cm spacing under no weeding plots. The highest weed population and dry weight were obtained from 20 cm × 10 cm spacing with no weeding treatment and the lowest was found in 25 cm × 15 cm spacing with Pyrazosulfuron-ethyl 10 WP application. 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 maximum yield.Download