Source: NCSU COOPERATIVE EXTENSION, 6/15/20


This is the tenth and final TSWV and tobacco thrips risk assessment report. Third and fourth generation flights have now occurred at all our report locations. We have seen some early hornworm flights in eastern NC and are just beginning to see the first tobacco budworm infestations develop.

The information presented here is intended to supplement, but not replace, farm-specific predictions. In order to generate data for your farm, the following information is required:

1. Field location, selected on a map
2. TSWV infection percentage in a typical year at this location
In addition, you can provide the following optional information which will improve recommendations:
3. Anticipated planting date
4. Greenhouse applications of imidacloprid and/or Actigard

Kenly is a relatively low TSWV risk site, situated within large acreage production areas in Johnston and Wilson Counties. As of today, TSWV infection risk in Kenly is about the same as a typical year. Last year the third generation thrips flight occurred on May 24. This year, the third generation tobacco thrips flight (the generation that typically transmits the most TSWV) began on May 27.

The fourth generation thrips flight occured June 13. Because Kenly is a lower risk location, additional treatments against TSWV were not recommended here.

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