Vol. 8 No. 1
Efficacy of new herbicide molecule imazethapyr on weed control in soybean
Abstract: An experiment was conducted to study the efficacy of the herbicide imazethapyr in soybean. The treatments consisted of imazethapyr 10% SL in four rates of applications (750, 1000, 1250 and 1500 ml ha-1, respectively), metribuzin 75% WP at 0.50 kg ha-1, two hand weeding and un-weeded check. The study revealed that imazethapyr @ 1500 ml ha-1 can effectively control the weeds of soybean such as grasses, sedges and broadleaved weeds as post emergence spray at seven days after sowing of soybean. Though the yield was high with hand weeding twice, the benefit:cost ratio was higher in the case of imazethapyr treatment and this herbicidal treatment recorded the minimum weed density and weed biomass and ultimately produced better yield.
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