407 



supprescion program has been conducted along the juncture of the Texas High 

 and Rolling Plains. The suppression effort is designed to prevent the west- 

 ward spread of the insect into the more than 2 million acres of High Plains 

 cotton, and possibly into New Mexico. This program represents the largest 

 coordinated program ever undertaken to combat a cotton pest. It also serves 

 as an excellent example of cooperation among state and federal agencies and 

 producers. The present paper presents an appraisal of the effectiveness of 

 the suppression effort after 10 years of operation. 



798. , and Frisbie, R. E. 1978. Suppression of potentially overwintering 

 boll weevils as a pest management practice. In Boll Weevil: Management 

 Strategies. South. Coop. Ser. Bull. 228, pp. 39-49. 

 The suppression of prehibernating bol.T weevils during late season has proved 

 to be a highly effective weevil suppression technique in most areas where it 

 has been adequately tested. This technique offers numerous advantages over 

 previous chemical control programs, including 1) more effective control, 2) 

 greatly re luced costs as a result of elimination of or significant reduction 

 in requirements for in-seaeon insecticide applications, 3) reduced probabi- 

 lity of outbreaks of Heliothis and other secondary pests as a result of re- 

 ducing insecticide use during the growing season, and 4) less impact on bene- 

 ficial arthropod populations. Although this suppression method has been shown 

 to be effective in some areas of the Cotton Belt, it has gained only limited 

 acceptance. Due to differences in ecological conditions the high level of 

 suppression obtained in some Texas programs may not be possible in the more 

 humid areas of the Cotton Belt. However, it is unfortunate that the fall 

 suppression of prewintering boll weevils has not been more widely tested in 

 areas where the boll weevil is a key pest. The high level >of organization 

 and cooperation required is the greatest idisadvantage in application of this 

 suppression technique. However, it has been demonstrated in several areas 



