STUDY ON THE PERFORMANCE OF WEED MANAGEMENT TECHNIQUES AFFECTING GROWTH AND YIELD OF MUSTARD

Abstract

ABSTRACT An experiment was conducted at the Agronomy field of Sher-e-Bangla Agricultural University, Dhaka during October, 2017 to March, 2018 to study on the performance of different weed management techniques affecting growth and yield of mustard varieties. The experiment comprised of two factors viz., (i) three mustard varieties viz., V 1 = BARI Sharisha-14, V 2 = BARI Sharisha-15 and V = BARI Sharisha-17 and (ii) Five Weed managements viz., W 0 = No weeding (control), W 3 = One hand weeding at 10 DAS, W 2 = Two hand weeding at 10 and 20 DAS, W 1 = Panida 33EC (Pendemethylin) @ 2000 ml ha -1 at 5 DAS and W 4 3 = Whipsuper (Fenoxaprop-p-ethyl) 9EC @ 750 ml ha -1 at 21 DAS. Results revealed that mustard varieties, weed managements techniques and their interaction significantly affected weed population m -2 , dry weight of weed m -2 , weed control efficiency

and branches plant (no.), crop growth rate , relative growth rate, siliquae plant -1 (no.), seeds siliqua , 1000 seed weight(g), seed yield (t ha -1 ), stover yield(t ha -1 ), biological yield(t ha ) and harvest index (%) of mustard. Among the mustard varieties ‘BARI Sharisha-17’ performed superior than other varieties and it produced (1.61 t ha -1 ) seed which was 96.34% higher than BARI Sharisha-14 (0.82 t ha -1 ). In the case of weed managements two hand weeding at 10 and 20 DAS (W ) resulted better than other treatments and the estimated seed yield (1.61 t ha -1 2 ) was recorded which was 69.47 % higher than no weeding treatment (0.82 t ha -1 ). Similar trend was observed in interaction of variety and weed managements. BARI Sharisha-17 (V ) along with two hand weeding at 10 and 20 DAS (W 2 3 ) produced maximum seed yield (1.89 t ha -1 ) which was 329.55% higher than BARI Sharisha-14 (V ) along with no weeding treatment. So it might be concluded that BARI Sharisha-17 along with two hand weeding at 10 and 20 DAS could be a better mustard cultivation package in cultivating mustard at SAU campus.

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