Optimizing plant density and weed control techniques in yield enhancement of mungbean

Abstract

Field experiment was carried out at the Agronomy farm, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh to investigate the effect of plant density and weed control techniques on yield enhancement of mungbean. The experiment consisted of two factors viz. plant densities and weed control. Plant densities were 30 cm×continuous (D1), 30 cm×5 cm (D2), 30 cm×10 cm (D3) and 30 cm×15 cm (D4) arranged in the main plot. Weed control techniques were no weeding (W0), two hand weeding at 15 and 30 DAS (W1), Topstar 80 WP @ 75 g ha-1 as pre-emergence at 3 DAS (W2) and Whip Super 9 EC @ 750 ml ha-1 at 15 and 30 DAS as post-emergence herbicide (W3) arranged in the sub plot in a split plot design. Results showed that both plant density and weed control techniques significantly influenced most of the parameters studied. It was observed that application of pre and post emergence herbicide controlled weeds effectively compared to other weed control techniques whereas weed population and weed biomass were less in 30 cmx10 cm plant density. Considering yields, combination of 30 cm×10 cm plant density with application of Topstar 80 WP (D3W2) attributed to highest seed yield (1.47 t ha-1), stover yield (1.94 t ha-1) and biological yield (3.41 t ha-1) of mungbean.J. Asiat. Soc. Bangladesh, Sci. 42(1): 107-114, June 2016

The Effects of Weed Control and Plant Density on the Yield and Components of Mung Bean and Accompanying Weeds

“…Because there are more plants per unit area, which makes up for the loss of yield components, seed yield increases as plant spacing decreases. Consistent with previous research, our data show that Mung bean seed output increases significantly when plant density increases [17]. First, at 2.265 tons ha -1 , was the average seed yield from the weed-free treatment with a spacing of 10 cm; second, at 2.178 tons ha -1 , was the average seed yield from the recommended rate of Bentazon and Gallant super treatment with half the spacing; third, at 2.052 tons ha -1 , was the average seed yield from the recommended rate of herbicides; and finally, there was no significant difference between these three treatments.…”