GROWTH-REGULATION OF COMMON BERMUDAGRASS (CYNODON-DACTYLON) WITH IMAZAQUIN AND AC-263,222

Research was conducted in 1990 through 1992 to examine the vegetative and reproductive growth regulating activity of imazaquin and AC 263,22 2 on common bermudagrass. AC 263,222 at 0.06 kg ha-1, alone and in com bination with imazaquin (0.21 kg ai ha-1), significantly reduced seedh ead number, seedhead height, and vegetative canopy height for a 4-wk p eriod after both May and July treatment. Imazaquin (0.42 kg ai ha-1) a pplied alone resulted in less turfgrass discoloration, but suppressed vegetative and reproductive growth of common bermudagrass less as comp ared with treatments containing AC 263,222.