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Bt Resistance Monitoring of Tobacco Budworm and Cotton Bollworm in Alabama Cotton: Let's Get Everyone Involved!

W. J. Moar, R. H. Smith and R. Weeks


Greater than 400,000 and 350,000 acres of Bt cotton were planted in Alabama in 1996 and 1997, respectively. These Bt cotton plantings represent the largest percentage of cotton being planted with Bt cotton of any state. As a result, the concern over the development of Bt resistance occurring with the tobacco budworm (and to a lesser extent the cotton bollworm) has increased, especially in areas within Alabama which use Bt cotton primarily under the "96/4" strategy. A monitoring service for Bt resistance determination has been established by USDA/ARS, Stoneville, MS. In Alabama, a Bt Resistance Monitoring Kit was created and made available to all interested parties. Use of this kit facilitated delivery of "suspect worms" from Bt and non-Bt cotton to USDA/ARS for Bt resistance determination.

Reprinted from Proceedings of the 1998 Beltwide Cotton Conferences pp. 1054 - 1056
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998