IDENTIFYING THE PREDATORS THAT INTERFERE WITH BOLL WEEVIL TRAPPING AND EVALUATING A LURE/INSECTCIDE COMBINATION

摘要

A modified boll weevil trap was evaluated to determine if it would reduce the number of unwanted predators that interfere with trapping efficiency. Arthropods responsible for interfering with boll weevil trap captures were surveyed from both trap types. A separate study was conducted to evaluate boll weevil trap efficiency when grandlure was combined with an insecticide (Combo Lure~(R)) dispenser versus the insecticide DDVP and grandlure in separate dispensers. The modified trap did not reduce the unwanted arthropods. Ninety-eight percent of the arthropods came from 13 different spider families representing 14 known species, and 15 were identified to genus. The spider families most commonly collected from weevil traps were Anyphaenidae, Araneidae, Lycosidae, and Tetragnathidae. The combination lure-insecticide (Combo Lure~(R)) attracted boll weevils as well as the lure and insecticide presented in separate dispensers. These two treatments were not significantly different from one another in killing captured weevils, and other arthropods caught in the trap, and both treatments killed significantly more weevils than a grandlure dispenser in the absence of the insecticide dichlorovos.