ESA Annual Meetings Online Program

Influence of plant type and artificial diet on the activity of thiamethoxam against fall armyworm (Spodoptera frugiperda)

Wednesday, November 14, 2012
Exhibit Hall A, Floor One (Knoxville Convention Center)
Srinivas K. Lanka , Department of Entomology, Louisiana State University, Baton Rouge, LA
Sengottayan Senthil Nathan , Department of Entomology, Louisiana State University, Baton Rouge, LA
Jeffrey A. Davis , Entomology, Louisiana State University Agricultural Center, Baton Rouge, LA
Michael J. Stout , Department of Entomology, Louisiana State University, Baton Rouge, LA
The influence of plant types and artificial diet on the activity of thiamethoxam was explored by conducting bioassays on fall armyworm (SPodoptera frugiperda). Rice and soybean were treated as seeds with thiamethoxam (Cruiser 5FS TM) at equal rates of active ingredient per unit of seed weight (AI/seed weight). Same cohorts of both plantings were assessed for fall armyworm growth rates using the first trifoliate leaves of soybean and top two leaves at central whorl of rice at 3-4 leaf stage. Foliar concentrations of thiamethoxam was analyzed using LC/MS/MS analysis and the concentrations were simulated in artificial diets. the implications of host plant mediated activity of thiamethoxam was discussed.
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