49 



boll weevils as the trap lure was considered to be impractical when compared 

 with the use of a synthetic lure, but still feasible for use iii a large-scale 

 suppre ision program. The peak emergence period of. emerging overwintered boll 

 weevils, as determined by trap data, occurred from late May to late June. Trap 

 data indicated that boll weevil hibernation was rather localized in the best 

 hiberncition sites available around or near any particular field. The number of 

 cotton fields found infested with boll weevils prior to September showed that 

 the wing traps were effective in capturing emerging ovei^wintered weevils. 

 Attempts at crowing aldlcarb-treated trap rows of cotton were impractical 

 under the climatic conditions of west Texas and therefore were abandoned. 



85. ; Edwards, R. R.; Helms, W. F.; and Brazzel, J. R. 1973. Large- 

 scale field trial using a combination of aldicarb and wing traps to 

 suppress boll weevil populations. J. Econ. Entomol. 66: 492-496. 

 A large-scale field trial was conducted in the rolling plains of west Texas 

 to evaluate the effectiveness and operational feasibility of using 10% aldi- 

 carb granules incorporated with trapping, for suppression of overwintered 

 Anthonomus g rand is Boheman. It was determined that the treatment of a large 

 area with aldicarb was feasible from an operational standpoint. Cotton field 

 having traps and receiving an infurrow application of aldicarb (1 lb/acre) 

 had average reductions of 90.6% in percent punctured squares and 77.3% in adult 

 boll weevils. The infurrow + sidedres treatment of aldicarb gave a higher 

 degree of boll weevil suppression but resulted in a heavier infestation of 

 bollworms, Heliothis spp. Boll weevil wing traps were noneffective around 

 cotton fields receiving an infurrow application of aldicarb then around 

 untreated if ield. No increase in trap effectiveness was obtained by addition 

 of a sldedress treatment. 



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