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583. . 1977. A new thlxotroplc oil formulation for sticky traps for boll 

 weevils. J. Ga. Entomol. Soc. 12: 93-96. 



A new thixotropic oil formulation has several advantages over conventional 

 formulations, primarily because it is non-tacky and non-stringy. A cheap 

 and effective trap for Anthonomus grandis Boheman was produced by applying 

 the formulation to posterboard squares. 



584. , and Davich, T. B. 1975. Air-dropped boll weevil bait dispensers. 

 Miss. Agric. For. Exp. Stn. Res. Rep. 12, j pp. 



Grandlure baited traps coated with a sticky material have been used for several 

 years in surveys and migration studies of the boll weevil, Anthonomus grandis 

 Boheman. A later trap captured weevils alive in a plastic container at the 

 top of a paper cone. Then an in-field live trap placed within cotton fields 

 was developed for detection and suppression studies. In the search for a low- 

 cost device for containing grandlure to attract weevils to a toxic bait, we 

 designed one that consisted of two 7-inch squares of 26-inch poster board con- 

 nected by a 12 inch long string and another of two cardboard tubes of the type 

 used for trapping gypsy moths Porthetria dispar (L.), also, connected by a string. 

 The string improved aerodynamics balance when dropped or tossed into the field, 

 increasing logic on the cotton foliage. The traps contained grandlure in a 

 polyethylene glycol-impregnated filter with one gram of toxic bait containing 

 DDT addeu to the filters. Results showed that the principle was feasible though 

 a better toxicant than DDVP is needed. 



585. ; Hedin, P. A.; Davich, T. B.; Daum, R. J.; and Laseter, M. W. 



1971. Addition of food acidulants to increase attractiveness to boll 

 j^eevils of bait containing cottonseed oil. J. Econ. Entomol. 64: 583-585. 

 Eight acids, used as food acidulant.^, when added to cottonseed oil baits used 

 to attract Anthonomus grandis Boh. au caused a significant Increase (41-67%) 



