title: Activities of four insect growth regulator formulations of fenoxycarb against Psorophora columbiae larvae.
abstract: Four formulations of fenoxycarb were evaluated at dosages of 0.022 and 0.011 kg ai/ha against Psorophora columbiae larvae in rice plots. Granular formulations, at both rates, provided moderate to excellent control of larvae introduced within 24 h posttreatment. A 1.0% fenoxycarb/200 ITU B.t.i. granule provided 86.2% reduction of emergence from larvae introduced at 120 h posttreatment. Aside from this formulation residual activity was lacking. The liquid formulation performed moderately well at the high rate against larvae introduced within 24 h; however, residual activity rapidly diminished.
mesh_terms: D000818:Animals; D002219:Carbamates; D009033:Culicidae; D007814:Larva; D048448:Phenylcarbamates
chemical_list: D002219:Carbamates; D048448:Phenylcarbamates; C052034:fenoxycarb