This winter, I will be sharing results from several projects designed to assess the activity and utility of the recently registered tobacco insecticides, cholorantraniliprole (Coragen) and flubendianmide (Belt).
We have been working with both these products since 2008 in order to compare them to standard insecticides like spinosad (Tracer) and acephate (Orthene) as well as to test the limits of their activity against target pests.
The results from a trial to determine if these newer insecticides could be applied less frequently than standard against tobacco budworm have just been published in the journal Crop Protection. You can read the article here (purchase required if you do not have a subscription).
We found that bi-weekly applications of Coragen or Belt were as effective as weekly applications of Tracer in reducing tobacco budworm populations and end of season damage.
Coragen applications made every four weeks also reduced damage, but were not as effective as weekly applications of Tracer.
Soil applications of Coragen did not reduce end of season damage by tobacco budworms to seed capsules. Unlike in leaf production, there is no question that tobacco budworm larvae are significant pests of tobacco grown for seed.
It is possible to significantly decrease pesticide use against budworm in this system by incorporating newer chemistry into pest management programs.