EVALUATION AND DEMONSTRATION OF HERBICDES ALONE AND IN MIXTURE FOR MANAGEMENT OF GRASSY AND BROAD LEAF WEEDS IN WHEAT (Triticum aestivum L.) IN SARGODHA ZONE PAKISTAN
Wheat is the staple food of Pakistan and elsewhere in the world, which supplies 73% calories and proteins to the nation. The wheat area was sown on an area of 8.973 m ha which produced almost 26.674 million tons in Pakistan during 2016-17. Despite all improved agronomic practices the wheat production is gradually decreasing per unit area due to certain factors. Weeds are the major factor affecting the wheat grain yield. For this reason, a field experiment was designed to evaluate some grass and broadleaf weed killers alone and in combination for the control of narrow and broad leaf weeds in wheat crop in Sargodha zone, Pakistan on the Research area of Adaptive Research farm Sargodha during Rabi 2017-18 using wheat variety Faisalabad-2008. There were six treatments (Harvester @1 L ha-1, clodinofop 350 g ha-1, Buctril Super (bromoxynyl + MCPA) @0.75 L ha-1, Harvester + clodinofop @1 L ha-1 + 350 g ha-1, Buctril Super + clodinofop @ 0.75 L ha-1 +350 g ha-1 and the weedy check). The data revealed that Buctril Super + clodinofop propargyl with only 6 weed plants m-2 followed by clodinofop alone and Harvester + clodinofop with 8.38 weeds m-2 each. Buctril Super alone outyielded all the treatments by producing the maximum grain yield of wheat (3466.7 kg ha-1). However, it was statistically at par with Harvester by yielding 3266.7 kg ha-1). The lowest statistically significant yield was harvested the weedy check. Herbicide combinations failed to give competitive yields showing the antagonistic response of herbicides in combinations. Hence, single herbicide applications of Buctril Super and Harvester are recommended to achieve bumper harvests of wheat in the target area.