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784. Ruesink, W. G. 1976. Status of the systems approach to pest management. 

 Annu. Rev. Entomol. 21: 27-44. 



Systems science has only recently been applied to pest management. The develop- 

 ment of a sound pest-management strategy depends on our ability to understand 

 all the significant and relevant interactions of dhe real world. Models serve 

 as a crutch to aid our mental recall. The method of design is to manipulate 

 our concept of the real world (our model) using potentially useful tactics in 

 all possible combinations. Then the combination must be evaluated so the best 

 one may be chosen. 



785. Rukavishnikav, B. I. 1968. Genetic methods of Insect control. Genetika 

 4: 7Q6-811. 



Problems of irradiation and chemical sterilization of insect pests, including 

 the boll weevil, breeding of genetically inferior races of insects and their 

 release in natural populations are discussed in the article. 



786. Rummel, D. R. 1967. Preliminary report High Plains boll v/eevil survey- 

 1966. Tex. Agric. Exp. Stn. Dep. Entomol. Tech. Rep. 5, 16 pp. 



An intensive boll weevil survey was conducted in the High Plains boll weevil 

 control zone during the summer of 1966. **urvey data indicates that emerging 

 ■ioverwint er ed boll weevil populations were very small following the 1965 dia- 

 pause boll weevil control program. Only 11 overwintered adults were detect- 

 ed in the eight-county control zone by July 15 when first generation weevils 

 began to emerge. Overwintered populations were centered primarily in the 

 heavy shinnery oak areas of Dickens and Kent counties. In the control zone 

 area above the Caprock, only two overwintered adults were detected. Econo- 

 mic infestations failed to develop above the Caprock during the growing season. 

 Populations developed slowly during the summer with irrigated cotton pro- 

 ducing the largest infestations. Only 15,712 acres were known to be infested 



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