GROWTH AND YIELD PERFORMANCE OF MUNGBEAN (Vigna radiata L. Wilczek) UNDER THE APPLICATION OF DIFFERENT HERBICIDES

Abstract

An experiment was conducted at Agronomy farm of Sher-e-Bangla Agricultural University Dhaka-1207, Bangladesh during the period of March to June, 2017 to evaluate the growth and yield performance of mungbean (Vigna radiata L. Wilczek) under the application of different herbicides. The study had two factors, one with three varieties (V 1 = BARI Mung-5, V 2 = BARI Mung-6, V 3 = BARI Mung-4) and another with four herbicides [T 1 = Whipsuper (Fenoxaprop-p-ethyl) @ 1.5 ml L -1 , T 2 = Panida 33 EC (Pendimethalin) @ 2.0 ml L -1 , T 3 = Paraxon (27.6% WV paraquat dichloride salt) @ 2.0 ml L -1 , T 4 = Topstar 40 WP (40% oxadiargyl) @ 1.0 g L -1 ]. The experiment was laid out in a RCBD design using three replications. The herbicides were applied at twenty five days after emergence of mungbean seedlings and weeds were collected at 40 days after sowing from 1 m -2 area of each plot and oven dried to estimate weed growth. Results showed that both the varieties and herbicides and also their interactions had significant effect on most of the parameters studied. The highest number of pods plant (23.44), number of seeds per pod (15.41), 1000-seed weight (54.54 g), pod yield (2827.63 kg ha -1 ), seed yield (1893 kg ha -1 ) and harvest index (24.98%) were found from the combination treatment of V 2 T 4 . The good performance of the herbicide topstar (T 4 ) was attributed to the maximum reduction (1.03 g m -2 ) of weed population following the application of this herbicides in BARI Mung- 6. V 3 T 1 showed the lowest seed yield (686 kg ha

-1 ) showing the highest values of weeds dry weight (10.33 g m -2 ).