Status of Insecticide Resistance in Tobacco Budworm and Bollworm in Arkansas

Marvin L. Wall


Adult vial tests for pyrethroid resistance conducted on almost 2,000 male tobacco budworm moths from May through September of 1993 showed that resistance levels throughout the 1993 season were substantially higher than had been observed in previous years (1987-1992). Resistance levels to the pyrethroids increased in June during the no pyrethroid use period of the Insecticide Resistance Management Plan. Late maturing cotton crops appear to be contributing significantly to increases in pyrethroid resistance levels in August and September due to increased use of insecticides in late season. Adult vial tests conducted on male tobacco budworm moths to determine their tolerance to carbamate, organophosphate and organochlorine insecticides indicates that resistance to all three of these chemistries is also present in the tobacco budworm in Arkansas. Adult vial test data and field observations do not indicate any significant problem with resistance to the pyrethroid insecticides in the bollworm.

Reprinted from Proceedings of the 1994 Beltwide Cotton Conferences pp. 775 - 777
©National Cotton Council, Memphis TN

[Main TOC] | [TOC] | [TOC by Section] | [Search] | [Help]
Previous Page [Previous] [Next] Next Page
Document last modified Sunday, Dec 6 1998