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510. . 1978. Integrated insect management systems: integrated insect con- 

 trol in the Mid-South - Dwight Isely to present. ^E Proc. of Symp. on 

 Development of Optimum Crop Production Systems for the Mid-South. 

 Univ. of Arkansas Special Report 67: 101-103, Fayettcville, Arkansas. 

 Dwight Isely developed a boll weevil pest management system utilizing scouting 

 and spot dusting in the 1920' s. He placed students with farmers to scout their 

 cotton, with farmers paying for the service. Lack of an adequate information 

 delivery system prevented widespread adoption of this pest management system. 

 In other research on cotton pests Mr. Isely reared boll weevils and bollworms 

 under controlled conditions of temperature, relative humidity, and food; 

 studied varietal escape and resistance, demonstrated the value of v;inter 

 clean-up of weevil hibernation quarters in bottomland areas, showed spot 

 dusting to be a practical remedy for spider mite infestations, related cotton 

 aphid development and fecundity to plant nutrition, and did a lot of trouble-shooting 

 in the absence of an Extension Entomologist. He researched the new synthetic 

 insecticides but insisted that scouting and timing of insecticide applications 

 were the keys to good control, rather than making automatic or scheduled treat- 

 ments. An Extension Entomologist was hired in Arkansas in 1942 and widespread 

 education of County Agents and farmers J41 the principles so long advocated by 

 Mr. Isely became a reality. Scouts paid by farmers developed into a major 

 program. Research on IPM has continued under Mr. Isely's successors. These 

 studies include host plant resistance, thresholds, native predators, insect 

 pathogens, pink bollworm source and potential in Arkansas, clarification of 

 the Heliothis complex, life and seasonal history studies with emphasis on dia- 

 pause, the plant bug complex, status of Heliothis as an induced or primary pest, 

 elucidation of chlordimeform as a pest management tool, areas of greater or 

 lesser Heliothis hazard, improvement and evaluation of scouting methods and 

 development of a community-wide rather than a field by field approach to cotton 



