74 



and bollworms, Heliothis spp. on cotton. Experiments were conducted at Griffin 

 and !lidville, GA. from 1968-72. Azinphosmethyl + methyl parathion and toxa- 

 phene + methyl parathion consistently provided good control of weevils and 

 bollworms. Methyl parathion was effective when the boll weevil was the 

 primary economic species; however, it was lesd effective than certain com- 

 binations when bollworms were present in damaging numbers. Leptophos at 

 1.0-1.5 Al/acre appeared effective against bollworms. Materials showing 

 particular promise included azinphosmethyl + chlordimeform, methyl parathion + 

 chlordimeform, belt + methyl parathion, and PenCap M. 



134. ; Womack, H.; and Jordan, C. R. 1973. Evaluation of a boll weevil 

 diapause control program in Georgia. J. Ga. Entomol. Soc 8: 287-294. 



A boll weevil, Anthonomus grand is Boheman, diapause control program was evaluated 

 in Randolph County, Georgia for a three year period, 1969-71. Insecticide treat- 

 ments used in the program reduced the number of weevils entering hibernation 

 each year, thus reducing weevil populations the following spring. However, 

 these reductions were not adequate to alter significantly the number of in- 

 secticide applications needed for economic weevil control. Considering the 

 modest cost and possible benefits, it appears that treatments for diapause 

 control are worthwhile as an integral part of an insect pest management pro- 

 gram. 



135. Caubu, E., and Wolfenbarger, D. A. 1970. Effectiveness of experimental 

 insecticides for control of the tobacco budworm, boll weevil, fall 

 armyworm and twospotted mite. Tex. Agric. Exp. Stn. Consol. Prog. Rep. 

 2840-2845, pp. 12-14. 



In laboratory tests, experimental insecticides Pennsalt TD-5032, Shell SD- 

 14045 and SD-17250 and Stauffer R-2596 were more toxic to the tobacco bud- 



>- worm than a methyl parathion standard at 0.01-percent concentrat 



ion. 



