Tolerance of Bermudagrass (Cynodon dactylon) Putting Greens to Herbicide Treatments

Abstract

Herbicides were applied annually in March or March plus August to bermudagrass [Cynodon dactylon(L.) Pers. Tifdwarf’] putting greens for 6 yr. Bensulide [O,O-diisopropyl phosphorodithioateS-ester withN-(2-mercaptoethyl)benzenesulfonamide] delayed early spring growth of bermudagrass less than the other herbicides, but did not adversely affect turf quality during the growing season. Oxadiazon [2-tert-butyl-4(2,4-dichloro-5-isopropoxyphenyl)-Δ2-1,3,4-oxadiazolin-5-one] treatments applied twice each year severely retarded turf growth and reduced the quality and stand of bermudagrass. Napropamide [2-(α-naphthoxy)-N, N-diethylpropionamide] and prosulfalin {N-[[4-dipropylamino)-3,5-dinitrophenyl] sulfonyl]-S,S-dimethylsulfilimine} treatments reduced root growth of bermudagrass.