Composition of grandlure and dichlorvos for attracting and killing boll weevils in boll weevil traps

Abstract

Compositions and methods for attracting, capturing and killing populations of cotton boll weevils (Anthonomus grandis Boh.) in boll weevil traps are disclosed. With respect to the attraction and capture of boll weevils with Grandlure, the synthetic pheromone of the cotton boll weevil, there is generally an increased number of boll weevils captured in the trap cylinder when an insecticide dispenser is included in the trap cylinder to kill the weevils and thus prevent their escape. Additionally, dead boll weevils are more accurately counted than live boll weevils. The compound dichlorvos (2,2-dichlorovinyl dimethyl phosphate or DDVP) is the most preferred among those few insecticides that can be used in traps for killing and preventing weevil escapes. This is also the preferred insecticide when combined with Grandlure in a single dispenser to kill boll weevils or inhibit their ability to develop normally and reproduce. The single Grandlure dichlorvos dispenser provides for significant savings in labor expenses in large area trapping and eradication programs and significantly reduces the disposal of waste materials from spent dispensers.

Description

CROSS REFERENCE TO RELATED APPLICATION

[0001] This application is Divisional of Ser. No. 10 / 752,801 filed Jan. 7, 2004, entitled “COMPOSITION OF GRANDLURE AND DICHLORVOS FOR ATTRACTING AND KILLING BOLL WEEVILS IN BOLL WEEVIL TRAPS”BACKGROUND OF THE INVENTION

[0002] 1. Field of the Invention

[0003] This invention involves slow release delivery systems for use in the monitoring and the control of cotton boll weevils and other insects that over-winter or inhabit crop and nearby non-crop areas where host crops are present and not present.

[0004] 2. Description of the Art

[0005] Boll weevils are coleopteran insects that feed on cotton plants; causing serious damage to the plants and reducing yield. As a consequence, multiple applications of insecticides are required to maintain populations below economically damaging thresholds. Boll weevils are generally found in cotton growing regions of North, Central, and South America.

[0006] All life stages except the adult stage are spent inside cotton squar...