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A field experiment was conducted at Tirhut College of Agriculture, Dholi, (RAU, Samastipur, Bihar) for two consecutive years (2012-13 and 2013-14) to evaluate the efficacy of Halosulfuron methyl to control the Cyperus rotundus in Maize. The treatments consisted of new herbicide Halosulfuron methyl (75% WG) @ 52.5 and 67.5 g a.i./ha, applied at 3-4 leaf stage of Cyperus rotundus and compared with recommended 2,4-D Ethyl Ester 38% EC (900 g a.i./ha), Atrazine 50% WP (500 g a.i./ha) and two hand weedings at 18 and 30 DAS with untreated control. | Halosulfuron methyl 75 WG Sempra A new herbicide for the control of cyperus rotundus in maize Zea mays L. crop in Bihar
