Abstract
Abstract An experiment comparing three rates of FMC-54800 2EC and one rate of Mavrik Aquaflow with an untreated check was conducted on greenhouse produced geraniums Pelargonium x hortorum Bailey that were artificially infested with first instar Heliothis zea (Boddie). Upon eclosion, 20 larvae from a laboratory culture were transferred to each plant with a camel's hair brush and allowed to establish on the plants for ca. 7 days. Immediately preceding spray application, all plants were standardized with respect to the number of larvae present by transferring larvae until each plant hosted 4 larvae. Larvae were second and third instars at the time of treatment. Treatments were arranged in a RCB design (2 plants per treatment) with 4 replications. Insecticide treatments were applied with a C02 powered hand-held sprayer. All plants assigned to each treatment received a 30 s application that approximated runoff. Efficacy evaluations were recorded 48 hours posttreatment. The data were analyzed using ANOVA, and significant treatment effects (P • 0.05) were separated using DMRT.
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