Influence of Trap Spacing and Grandlure Concentration on Detection of Interfield Boll Weevil (Coleoptera: Curculionidae) Movement 1

The response of boll weevils, Anthonomus grandis grandis Boheman (Coleoptera: Curculionidae), to trap density (number per ha) and grandlure concentration (wicks per trap) was determined in a noncotton area. Trap density in this area was not a factor in weevil capture. Traps with four wicks were significantly more effective than traps containing one or two wicks per trap. Results in a cotton field may differ, depending on competition between male weevils and traps and the maturity of the colton plants.