Syngenta has confirmed resistance to thiamethoxam, the active ingredient in Cruiser, Avicta Complete, Avicta Duo and Acceleron N seed treatments in four populations of tobacco thrips collected in the Mid-South. Early indications suggest that this resistance is confined to the Mid-South. Thiamethoxam is a widely used seed treatment for cotton, corn, soybeans and rice in Louisiana; however, thrips rarely inflict enough injury to corn and soybeans to cause economic losses
Over the past three years we, as well as our colleagues around the Mid-South, have seen a decline in efficacy of thiamethoxam treated cotton seed against tobacco thrips. Based on limited information, resistance appears to be confined to thiamethoxam and has not been detected with imidacloprid.
Additionally, current data suggests that resistance to thiamethoxam is limited to tobacco thrips; thus western flower thrips, which occur in high numbers some years in Louisiana, still appear to be susceptible.
A larger resistance screening program will be conducted in 2014 and more information and specifics will provided as production meetings commence in the winter and spring.
Please see the following link by Gus Lorenz for additional information.
If you have any questions or concerns, please contact the Sebe Brown or David Kerns for more information.
Sebe Brown Cell: 318-498-1283 Office: 318-435-2903
David Kerns Cell: 318-439-4844 Office: 318-435-2157