161 



309. Guerra, A. A.; Garcia, R. D.; and Wolfenbarger, D. A. 1980. Activity of 

 3 cyclohexadiene analogs against the boll weevil, Anthonomus grandis , 

 and tobacco budworm, Heliothis virescens . Southwest.. Entomol. 5: 153-157. 



Three analogs of cyclohexadiene I) 2,6-dibromo-4-hydroxy-4-methyl-2, 5-cyclo- 

 hexadiene-1-one; (II) 2, 6-dlbromo-4, 4-dimethyl-2, 5-cyclohexadiene-l-one; 

 and (III) 2, 6-dibromo-4-hydroxy-4-methyl-2, 5-cyclohexadiene-l-one acetate 

 were tesuc^d for activity against the boll weevil, A. grandis Boheman, and the 

 tobacco budworm, H. virescens (F.). Only compound III was effective against 

 the boll weevil, but all 3 compounds showed activity against the tobacco 

 budworm. Spray applications of compound III on cotton in the field caused 

 reduction in the development of boll weevils in cot con squares and, when 

 incorporated into artificial larval diet, the chemical reduced adult emergence 

 apprx. 90% at concentrations as low as 0.001% (wt/vol) . Applications of 

 compound III as a foliar spray to potted cotton plants completely inhibited 

 the hatch of tobacco budworm eggs. Topical applications of the chemical were 

 effective against 1st stage tobacco budworms. Topical applications of com- 

 pound I significantly affected larval development, pupation and adult eclosion 

 of this insect in the laboratory. 



310. Guice, 0. T., Jr. 1976. Regulatory activities carried on under the Pilot 

 Boll Weevil Eradication Experiment, 1971-73. In Boll Weevil Suppression, 

 Managemtint, and Elimination Technology. Proceedings of a Conference, 

 February 13-15, 1974, Memphis, Tennessee. U.S. Agric. Res. Serv. [Rep.] 

 ARS-S-71, pp. 73-74. 



Results were most gratifying, and except for possibly less than one-half dozen 

 cases involving relatively minor instances, quarantine and regulatory problems 

 were fewer than in perhaps any quarantine program with which I have been as- 

 sociated in some 35 years in dealing with regulatory matters. In only one 

 caste did we have to go to the point of notifying a producer that an injunc- 



-X 



