Efficacy of some new herbicidal molecules on weed density and yieldcomponents of wheat
2003
Khan, I. | Hassan, G. | Khan, M.A. | Khan, M.I.,NWFP Agricultural Univ.,Peshawar (Pakistan). Dept. of Weed Science
Field studies were undertaken at Malkandher Research Farm, NWFPAgricultural University, Peshawar during Rabi 2002-03, to investigate theeffectiveness of different herbicides including new molecules tribenuron-methyland thifensulfuron-methyl against grasses and broadleaf weeds. Theexperiment was data out in randomized complete block design with fourreplications. The experiment comprised of 11 herbicides and a weedy check.The herbicidal treatments were post emergence applications of thifensulfuron-methyl at the rate of 0.037, thifensulfuron-methyl at the rate of 0.05,tribenuron-methyl at the rate of 0.05, triasulfuron + terbutryn at the rate of0.15, bromoxynil + MCPA at the rate of 0.45, isoprcturon at the rate of 0.01,carnfentrazone ethyl ester at the rate of 0.093, MCPA at the rate of 0.49, andchlorfluazuron at the rate of 0.96 kg a.i ha-1. Ghaznavi-98 variety of wheat inplot size of 5x 1.5 m2 was planted during the third week of October 2002. Datawere recorded on Number of tillers plant-1, 1000 kernel weight (g), biologicalyield (t ha-1) and grain yield (t ha-1). The lowest weed density and maximumgrain yield was recorded in Affinity 50 WDG, Buctril-M 40EC and Logran Extra64 WDG to the tune of 4.133, 3.866 and 3.599 tons ha-1, respectively. Minimumyield (2.133 tons ha-1) was recorded in the weedy check plots.
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