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878. Talmadge, K. ; Albersheim, P.; and Earle, N. W. 1970. Cotton plant cell 

 wall polysaccharide degrading enzymes of the boll weevil. J. Econ. 

 Eptoraol. 63: 712-71A. 

 The apparent participation of polysaccharide degrading enzymes in the nutrition 

 of the boll weevil leads to some interesting questions. Most degradative 

 enz>Tnes of this type are inducible rather than constitutive; such inducible 

 enzymes are synthesized only when required (Jacob and Monod 1961). It would be 

 of value to learn what stages of the life cycle of the boll weevil possess these 

 enzymes. If the enzymes are inducible, perhaps the induction can be interrupted. 

 If these enzymes are required for normal growth and development of the boll 

 weevil, it may be possible to prevent development of the insect by specifically 

 repressing the synthesis of such digestive enzymes. Specific repression of the 

 synthesis of the boll weevil's digestive enzymes should not adversely affect 

 the cotton plant, since the plant is unlikely to require such enzymes for its 

 own development. 



879. Taylor, C. R.; and Lacewell, R. D. 1977. Boll weevil control strategies: 



regional benefits and costs. South. J. Agric. Econ. l(July): 129-135. 

 Boll weevil control alternatives are being developed and proposed basically to 

 benefit farmers. This analysis strongly suggests that in the aggregate, farmers 

 in their role as landowners would not benefit from the programs. Rather, land- 

 owners would lose because land values would fall. Consumers of cotton however, 

 would benefit through lower prices. Another major implication of this study is 

 that eradication may not be the optimum boll weevil control alternative for either 

 society or producer. The analysis suggests that an 1PM alternative requiring some 

 additional research, but that potentially could be put into practice in five to 

 ten years, may have the largest potential. However, likely cost of acquiring 

 these benefits needs to be carefully considered. A boll weevil IPM control alter- 

 native, which presently exists and could be put into practice within one year, 



