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951. ; Gannaway, J. R.; and Niles, G. A. 1976. The age distribution of cotton 

 bolls and damage from different generations of the boll weevil. Tex. Agric. 

 Exp. Stn. Misc. Publ. MP-1254C. 



Releases simulating first and second generation boll weevils, Anthonomus grandis , 

 were made on two cotton genotypes, and effects on production were noted. First 

 generation insects caused severe reductions in yields. When weevil release was 

 delayed until the second generation, yields were only moderately decreased. 

 First generation weevils produced their damage by both square and boll attack; 

 second generation insects were a threat to bolls. Bolls of the short-season 

 cotton, DSR 1x6-56, which were 12 days or older were relatively safe from 

 weevil attack. 



952. ; Gannaway, J. R.; and Niles, G. A. 1977. Age distribution of cotton 

 bolls and damage from the boll weevil. J. Econ. Entomol. 70: 5-8. 



Releases simulating 1st and 2nd generation Anthonomus grandis (Boheman) were made 

 on 2 cotton genotypes, and effects on fruiting, fruit damage, and yields were 

 noted. First generation releases caused severe reductions. The release of twice 

 as many weevils in the 2nd generation moderately reduced yields. First generation 

 produced damage by way of square and boll attack; 2nd generation insects pri- 

 marily were a threat to bolls. Bolls 12 days old or older at the time of the" 

 beginning infestation of 2nd generation weevils of the short season genotype 

 DSR 1x6-56 were relatively safe from weevil injury. Subplots of this cotton 

 averaged 300-500 lb acre in bolls that were 13 days or older on the 2nd day of 

 the 2nd generation period. 



953. , and Hanna, R. L. 1966. Effects of the boll weevil and bollworm on 

 cotton quality. J. Econ. Entomol. 59: 265-267. 



Cotton-quality tests were conducted on lint and seed samples collected from a 

 series of Insecticide experimental treatments. Despite considerable damage to 



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