Rice sheath blight pathogen Rhizoctonia solani was isolated from the diseased samples obtained from Agricultural Research Station, Nellore. Pathogenicity of R. solani on rice leaves was assessed following detached leaf technique. The herbicides viz., Glyphosate, 2,4-D Sodium salt, Butachlor, Pretilachlor, Oxadiargyl, Pyrazosulfuron ethyl, Bensulfuron methyl + Pretilachlor 6%, Cyhalofop-butyl, Bispyribac sodium and Ethoxy sulfuron were tested at recommended concentrations by poisoned food technique were significantly superior over control in checking the mycelial growth of R. solani. Glyphosate, Butachlor, Pretilachlor showed 100 per cent inhibition. | Effect of different herbicides on the mycelial growth of rhizoctonia solani in vitro