75 



American Cyanamid E.I. 72016 was more toxic to the fall armyworm than the 

 DDT standard at 0.01 percent. Only American Cyanamid E.I. 72016 gave a 

 higher kill of the boll v;eevil chan an azinphosmethyl standard. Foliar 

 sprays of Geigy GS-13006, Bay 91273 and Bay 93820 were more effective 

 against the two-spotted spider mite than the standard malathion at 0.01 

 percent. Hercules 18526 was more effective against this mite as a systematic 

 than the standard demeton at 1 part per million. In topical application 

 tests, the highest LD^p-'s obtained with methyl parathion and Azodrin® on 

 tobacco budworm larvae were 1-fold to 6-fold greater in 1969 than in 1968, 

 respectively. 



136. , and Wolfenbarger, D. A. 1970. Toxicity of three pyrethroids to 

 several insect pests of cotton. J. Econ. Entomol. 63: 1373-1374. 



Three cyclopropane carboxylate pyrethroids, SBP-1382 (5-benzyl-3-furyl methyl 

 2, 2-dimethyl-3-(2-methylpropenyl) cyclopropane carboxylate, SBP-1390 (5-benzyl- 

 3-furyl) methyl d-trans-2, 2-dimethyl-3-(2-methylpropenyl) cyclopropane carboxy- 

 late, and tetramethrin in foliar sorays were toxic to the southern armyworm. 

 SBP-1382 was the most active against the tobacco budworm. SBP-1382 and SBP-1390 

 caused equal kill of the fall armyworm and were more effective than tetramethrin. 

 SBP-1382 at 0.25% concentration was n'o*t toxic to spider mites and gave 35% kill 

 *~af"boli weevils after 48 hr. ^ 



137. , and Wolfenbarger, D. A. 1971. Effectiveness of experimental insecti- 

 cides against the tobacco budworm, boll weevil, fall arm^'worm and two- 

 spotted spider mite. Tex. Agric. Exp. Stn. Dept. of Entomol. Tech. Rep. 

 19, pp. 26-32. 



In laboratory tests, experimental insecticides methyl parathion. Shell SD-15568, 

 Sumitomo K-9, Sunitomo S-4084 and Vero Beach Bay 78537 ard Bay 88941 were about 



i 



