457 



897. ; Wright, B. J.; Hardee, D. D.; Gueldner, R. C; and Hedin, P. A. 

 1970. Constituents of the cotton bud. XVI. The attractancy response of 

 the boll weevil to the essential oils of a group of host and nonhost 

 plants. J. Econ. Entomol. 63: 751-753. 



When the essential oils of several host and nonhost species within the Malvaceae 

 family and some angiosperms and gymnosperms were tested for attractancy to Antho- 

 nomus grand is Boheman, the oils ware as attractive as cotton oil. Moreover, the 

 insect actually favored essential oils of 2 alternate host plants. Hibiscus 

 militaris Cav. and H. lasiocarpus Cav., in comparative preference tests with 

 cotton oil. Thus, in the laboratory, the essential oils in plants did not 

 control insect preference exclusively. Morphological arid environmental con- 

 ditions may influence the concentrations of volatile components released by 

 the plants to the atmosphere. 



898. Timmons, F. D.; Brook, T. S.; and Harris, F. A. 1973. Effects of aldicarb 

 applied side-dress to cotton on some arthropods in the Monroe County, 

 Mississippi, boll weevil diapause-control area in 1969. J. Econ. Entomol. 

 66: 515-153. 



The effects of aldicarb on boll weevils, Anthonomus grand is Boheman; Heliothis 

 larvae; and beneficial predators was investigated in large fields of cotton with 

 and without boll weevil sex-attractant traps. Three of the fields in the Monroe 

 County, Miss., boll weevil diapause-control area had boll weevil sex-attractant 

 traps, and with 1 lb (0.9 kg) active ingredient of aldicarb applied as a side-dress 

 application to cotton in the pin-head square acreage, season-long boll weevil con- 

 trol was obtained. Three aldicarb-treated fields without boll weevil sex-attrac- 

 tant traps had 39 days of boll weevil control, Heliothis larvae became an economic 

 problem earlier in the aldicarb-treated fields than in the control fields. Preda- 

 tor reduction was drastic in the aldicarb-treated fields after the first rain. 

 The predator population generally Increased in the control fields until they were 



