Performance of power weeders and herbicides on growth, weed dynamics and profitability of direct seeded rice (Oryza sativa L.) under various planting geometry

Abstract

A field experiment was conducted on Instructional cum Research Farm, Indira Gandhi Krishi Vishwavidyalaya, Raipur (C.G.) during Kharif 2021 to evaluate the “Performance of power weeders and herbicides on growth, weed dynamics and profitability of direct seeded rice under various planting geometry”. Among all the treatments highest values of yield and yield attribute characters (viz. no. of effective tillers m-2, number of grains panicle-1, panicle length, panicle weight, test weight, grain yield and straw yield), lowest weed dry weight and highest weed control efficiency were found under weed free (T10) treatment followed by of 20 cm row spacing+ single row motorized weeder at 20 and 40 DAS + bispyribac-sodium @ 25g a.i. ha-1 at 2-4 leaf stage (30 DAS).