IMPACT OF DIFFERENT HERBICIDES ONBROADLEAF WEEDS AND YIELD OF WHEAT

Studies were carried out to evaluate the efficacy ofdifferent post emergence herbicides on weeds in wheat crop atAdaptive Research Farm, Karor (district Layyah), Thal Desert,Pakistan under irrigated conditions, during Rabi 2007-08. Theexperiment was laid out in Randomized Complete Block (RCB)design with three replications, with plot size of 20 x 5 m 2. Threedifferent herbicides were applied as post emergence viz: Buctrilsuper 60 % EC, Starane-M and Logoran Extra with two differentdoses each viz: Buctril super 60 % EC @ 825 and 1125 ml ha-1,Starane-M@ 750 and 875 ml ha-1 and Logoran Extra @250 and315 g ha-1. An untreated control was also included in the trial. Allherbicides significantly decreased weed population over controland maximum grain yield (2300 kg ha-1) was obtained whereBuctril super 60 % EC was applied @ 825 ml ha-1. It washowever statistically at par with the grain yield of 2245 kg ha-1where Starane-M was applied @875 ml ha-1. All the herbicidalapplications out yielded the control. It is thus recommended thatBuctril- super and Starane-M may be applied @ 825 and 875 mlha-1 for offering control of broad leaf weeds and increase grainyield of wheat.