Chemical weed management in wheat intercropped with sugarcane
2006
Marwat, K.B. (NWFP Agricultural Univ., Peshawar (Pakistan). Dept. of Weed Science) | Hussain, Z. (NWFP Agricultural Univ., Peshawar (Pakistan). Dept. of Weed Science) | Gul, B. (NWFP Agricultural Univ., Peshawar (Pakistan). Dept. of Weed Science) | Saeed, M. (NWFP Agricultural Univ., Peshawar (Pakistan). Dept. of Weed Science)
To assess the effect of various herbicides to control weeds in wheat intercropped with sugarcane, a field trial was conducted at Sugar Crops Research Institute, Mardan during rabi season 2003-04, using randomized complete block (RCB) design having four replications. The experiment consisted of eight treatments viz.; seven herbicides and a weedy check. The herbicides included were; terbutryn + triasulfuron @ 0.16 kg, 2,4-D @ 0.7 kg, fenoxaprop-p-ethyl @ 0.93 kg, clodinafop @ 0.05 kg, bromoxynil + MCPA @ 0.49 kg, carfentrazon-ethyl @ 0.02 kg and isoproturon @ 1.0 kg a.i ha-1. The data were recorded on weeds kill percentage, fresh weed biomass, plant height, spike length, number of spikes m-2, number of grains spike-1, 1000 grain weight, biological yield, grain yield and harvest index. Parameters like weed kill percentage, weed biomass, number of spikes m-2 and grain yield were significantly affected by the herbicides. Maximum weed kill percentage (96.2%) and minimum weed biomass (179 kg ha-1) were recorded in terbutryn + triasulfuron as compared to weedy check having values of 0 % and 1381 kg ha-1, respectively. Similarly spike length (12.6 cm), number of spikes (490 m- 2), number of grains spike-1 (52.25), 1000 grain weight (44.8 g), biological yield (18240 kg ha-1), grain yield (4453 kg ha-1) and harvest Index (29.30 were the highest in Logran extra 64 WG treatments as compared to weedy check having (11.0 cm), (342 m-2), (41.0), (40.23 g), (16260 kg), (3575 kg ha- 1) and (24.3 9/o), respectively.
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