Miw«aH*«airaws«OTiraap^aaB 



21 



the petioles. Mortality increased with time and increased doses. Also, the 

 rate of oviposition decreased during a 19-day period when the weevils were con- 

 tinuously exposed to sublethal doses of the insecticides; greater reductions 

 occurred at higher doses. In all tests, aldicarb affected mortality and fecun- 

 dity more than other insecticides. 



35. ; Ridgway, R. L.; and Coppedge, J. R. 1971. Large-scale field tests 

 of soil applications of aldicarb for suppression of populations of 

 boll weevils. J. Econ. Entomol. 64: 1280-1284. 



In-furrow and sidedress applications of aldicarb were compared with foliar 

 applications cf azinphosmethyl for suppression of populations of Anthonomus 

 grand is Boheman in an area near the Texas High Plains boll weevil control 

 zone. The applications of aldicarb reduced populations of adult boll weevils 

 94-96% until long-range movement, of weevils began in late August. Meanwhile, 4 

 applications of azinphosmethyl reduced populations only 73%. Some Increase in 

 populations of Heliothis spp. occurred in most plots treated with an insecticide; 

 however, the greatest increases occurred in those treated with sidedress 

 applications of aldicarb. 



36. Bartlett, A. C. 1968. Behavior of iiyradiated boll weevils. II. Reprcduc- 



tion and mortality in cages with untreated boll weevils. J. Econ. Entomol. 



. 61: 1680-1684. 

 Mortality, egg production, and egg hatch were determined for female Anthonomus 

 grandis Boheman which had been treated with 6388 or 12775 rad of gamma irradiation 

 and confined in various ratios with treated and/or untreated male and female 

 weevils of the same age and strain. Both treatments sterilized the weevils, but 

 egg hatch was reduced only when the ratio of treated (T) to normal (N) male 

 weevils exceeded 10T:1N. \^en the treated group consisted of males only 



