Ten insecticides and 2 insect growth regulators (IGRs) were evaluated in 3 greenhouse tests for control of Bradysia spp. larvae infesting potted ornamental plants, Schlumbergera bridgesii (Lem.) Lofgr. and Peperomia caperata Yunck. Acephate, aldicarb, diazinon, and oxamyl were consistently effective in larval control. Carbofuran, CGA-12223 (o-[5-chloro- 1-(I-methylethyl)-IH -I,2,4-triazol-3-yl O. O-diethyl phosphorothioate), chlorpyrifos, methomyl, permethrin, and resmethrin provided acceptable control in individual tests. Numbers of larvae declined in pots treated with IGRs, kinoprene, and methoprene, but did so more slowly than in pots treated with insecticides. Chemicals applied as sprays to the soil surface were as effective as those applied as drenches, were less phytotoxic, and were more easily applied under conditions of commercial production.
Document Type: Research Article
Publication date: April 1, 1979
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