Bio-efficacy of Sorghum Extract and Herbicide on Weed Dynamics and Productivity of Wheat in Western Rajasthan

Integrated application of sorghum extract along with herbicides are viable option for reducing herbicidal dose and their effect in soil and plant. This led to reduce environmental pollution as well as check the growth of weeds in the crop without having detreating effect on crop. Therefore, an integrated approaches involving botanicals conjunctive with herbicide will be the alternatives to reduce post-effects of herbicide. Sorgoleone is the allelochemicals which is present in sorghum and having potential to suppress the growth of weeds at early stage by checking water and nutrient absorption. The basic aim of the study to calibrate the potential of sorghum extract on weed suppression as well as to reduce the quantity of herbicides in wheat crop.

A field experiment entitled “Bio-efficacy of sorghum extract and herbicide on weed dynamics and productivity of wheat in western Rajasthan” was conducted at Instructional Farm, College of Agriculture, Jodhpur (Rajasthan) during rabi season of 2021–22. The experiment was conducted in randomized block design replicated thrice and comprised of eleven treatments of weed management practices.

Sequential application of sorghum extract (1:3) + ready-mix of clodinafop + metsulfuron 64 g/ha as post-emergence was found to be the most effective in controlling weeds which led to significant reduction in weed density and weed dry weight with highest weed control efficiency showed significant superiority over all treatments.