This research aimed to evaluate imazapic selectivity to sugarcane ratoons, compared to imazapyr and tebuthiuron, applied in early post emergence at Araras-São Paulo 1999/2000. The study was conducted in a soil with 21% clay and 71% sand, properly corrected and fertilized. The experimental design was a randomized complete block with five replications of seven treatments: imazapic (73.5, 98.0 and 122.5 g ha-1), imazapyr (125.0 g ha-1) and tebuthiuron ( 1100.0 g ha-1) and controls with and without weeds. All the herbicides caused initial toxicity to the sugarcane ratoons, until 100 days after treatments, without damage to productivity and raw material quality.
tolerance; herbicides
