Phytotoxic Response and Variation in Yield Traits for Post Emergence Herbicides in Chickpea (Cicer arietinum L.)

The present investigation was conducted to identify sources of tolerance to the herbicides viz., Topramazone and Quizalofop ethyl in order to potentially employ these sources in the development of herbicide-tolerant chickpea genotypes. Screening of genotypes revealed large variation in tolerance to Topramazone. Three genotypes namely, NBeG 776, RVG 205 and IPC 2010-134 were identified as highly tolerant based on herbicide tolerance scores and can be used as source for breeding Topramazone tolerant varieties. Herbicide Quizalofop ethyl showed non phytotoxic effects on chickpea genotypes. Also high yield of genotypes KGD 99-4 and NBeG 776 in presence of Quizalofop ethyl application suggested effective use of this post emergence herbicide to control weeds in chickpea.