Weed and Wheat Dynamics Preceding Different Herbicides
Weed and Wheat Dynamics Preceding Different Herbicides
Muhammad Asad1, Safdar Ali1, Muhammad Ramzan Ansar2, Ijaz Ahmad3*, Muhammad Suhaib4 and Muhammad Khubaib Abuzar5
ABSTRACT
Wheat is the main cereal crop and a staple food in Pakistan. It is an important cereal crop of Potohar region. Weeds infestation is a major cause of low wheat yield. Synthetic herbicides are mostly used to control weeds. A field experiment was conducted to investigate the Chemical control of broad-leaved weeds in wheat at the Koont Research Farm, PMAS-Arid Agricultural University, Rawalpindi, during rabbi season, 2014. The experiment was laid out in a randomized complete block design (RCBD) with four replications, with a plot size of 06 x 04 m2. Four different herbicides were applied as post emergence with three different doses each viz:,Ally max @ 34.58, 46.11 and 23.04 g ha-1, Lihua @ 53.34, 72.4 and 36.23 g ha-1, and Wheat Star @ 370.5, 494 and 247 g ha-1 and Buctril super 60% EC @ 741, 988 and 494 ml ha-1. An untreated control and hand weeded plot was also included in the trial. Wheat variety AUR-2009 was sown as a test crop and the herbicide was applied 65 days after sowing. All herbicides were sprayed as post-emergence. The best weed control was accomplished by Wheat star@ 494 gha-1 as profoundly lower weed counts m-2 (26), and higher percent weed control (27.9%) were noted after 25 days of its spray. Wheat growth parameters like plant height, number of tillers per m2, spike length and number of spikelets per spike remained statistically at par among various treatments. Significantly higher number of fertile tillers (172), Plant height (93.83 cm), spike length (7.4 cm) were noted with Wheat Star @ 370.5 g ha−1. Although treatments did not differ significantly with respect to wheat grain and biological yields, yet the highest grain yield (3295 kg ha−1) and biological yield (11173 kg ha− 1) were produced by Wheat Star @ 370.5 g ha−1. Based on better weed control and wheat yield, Wheat Star @ 370.5 g ha−1 and Buctril Super @ 741 ml ha−1 are recommended in similar areas where wheat fields are predominantly affected by drought and infested by broad leaved weeds.
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