164 



produced pheromone on a variety of foods, such as apples, bananas, okra, 

 peaches, and string beans, but the most favorable diet was cotton squares; 

 and 5) overwintered male boll weevils survived longer witho-jt food than 

 laboratory-reared males, but both needed some food be'^ore pheromone produc- 

 tion began. These results indicate that a constant supply of adequate food, 

 preferably cotton squares or small cotton bolls, is essential to continued 

 production of pheromone by males. 



315. . 1975. Boll weevil population management, detection or elimination 

 with in-field traps. Proc. 1975 Beltwide Cotton Prod. Res. Conf., 



pp. 132-135. 

 We have known since 1969 that grandlure, the mixture of sjTithesized chemicals 

 comprising the pheromone of the boll weevil, Anthonomus grandis Boheman, will, 

 elicit behavioral responses identical to those produced by the natural che- 

 micals emitted by the male boll weev51. These responses include attraction 

 to male and female boll weevils (aggregating pheromone) in early (overwintered) 

 and late (migrating) season boll weevils, and attraction to females (true sex 

 pheromone) in mid-season. When male-baited traps and trap crops were proved 

 effective in 196S-71 in surveying and suppressing boll weevils, and when 

 synthesized grandlure was proved effective in nature in 1969-70, grandlure.. 

 was used widely in traps and trap crops by over 40 researchers in 1971-73 in 

 13 U.S. cotton-producing states and 5 foreign countries in sur\'ey and manage- 

 ment of the boll w^eevil. In addition, grandlure in traps and trap crops 

 played a key role in the Pilot Boll Weevil Eradication Experiment completed 

 in 1973. 



316. . 1976. Development of boll weevil trapping technology. J[n Boll 

 Weevil Suppression, Management, and Elimination Technology. Proc. 



of a Conference, February 13-15, 1974, Memphis. Tennessee. U.S. Agric, 



