title: Efficacy of Bay Sir 8514, an insect growth regulator, against Psorophora columbiae and Anopheles quadrimaculatus in small plot and field trials.
abstract: Four formulations of an insect growth regulator, Bay Sir 8514 (a benzoylurea compound), were tested against 2 species of riceland mosquito larvae, Anopheles quadrimaculatus and Psorophora columbiae. Formulations of 25% WP, 0.5% G and 065 EC (65 g/liter) were tested at dosages of 14, 28, 56, and 84 g ai/ha in small plots. The 14 g ai/ha rate was ineffective for all formulations while the 28, 56 and 84 g ai/ha provided 100% mortality through 48 hr posttreatment. The 84 g ai/ha rate gave complete control through 7 days posttreatment. A 4 F formulation was applied aerially at rates of 24.9 and 49 g ai/ha to a 9.7 ha rice field. The 24.5 g ai/ha rate provided marginal control at 24 hr posttreatment but failed to control larvae at 48 hr. At 49 g ai/ha, the material provided control through the 48 hr posttreatment.
authors.affiliation: St. Louis Co. Dept. of Community Health and Medical Care, Clayton, MO 63105.
authors.forename: W B
authors.initials: WB
authors.lastname: Kottkamp
authors.forename: M V
authors.initials: MV
authors.lastname: Meisch
mesh_terms: D000818:Animals; D000852:Anopheles; D001549:Benzamides; D009033:Culicidae; D005069:Evaluation Studies as Topic; D007306:Insecticides; D007605:Juvenile Hormones; D007814:Larva; D011156:Population Density
chemical_list: D001549:Benzamides; D007306:Insecticides; D007605:Juvenile Hormones; C023957:triflumuron