Abstract
Investigation pertaining to the efficacy of tribunilherbicide at various concentrations with and without a surfactant for the control of wheat weeds was carried out at the University of Agriculture. Faisalabad. Addition of a surfactant •. improved the efficacy of tribunil herbicide spray by increasing rentention of the spray solution and decreasing bounce off loss. Application of tribunil ({j). 2 kg ha:' + 0.2 % surfactant resulted in better weed control and eliminated their competition with wheat crop by increasing weed mortality to the extent of 88.46 % as compared to control. It resulted in higher grain yield and maximized the net benefit among the tested treatments. Addition of a surfactant also increased net benefit over application of tribunil alone. All the weedicide treatments with or without a surfactant significantly decreased the weed flora. Application of tribunil and tribunil plus a surfactant also resnltcd in increased fertile tillers. number of grains per spike as well as grain weight as compared to other treatments. Key words: efficacy of tribunil, surfactant, weeds in wheat

Muhammad Idrees. (2000) EFFICACY OF TRIBUNAL AT VARIOUS CONCENTRATIONS WITH AND WITHOUT SURFACTANT FOR THE CONTROL OF WEEDS IN WHEAT, , Volume 37, Issue 3,4.
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