The efficiency of fipronil was evaluated in field conditions at different dosages and two formulations, against Nasutitermes sp. (isopteran: Termitidae) in sugarcane (Sccharum sp.). Termite mounds were indentified, measured and drilled until cellulosic chamber to allow insecticide application. Nine treatments were tested with ten replications in a completely randomized design and each termite mound considered as an experimental unit. after 50 days the termite mounds were opened and the mortality evaluated. The most efficient treatments were fipronil (800 WG) at 0.32 g a.i./mound and fipronil (20) at 0.20 g a.i./mound, both causing 100% mortality.
free text keywords: termites, insecticide, chemical control, Insecta