Thrips Flight and TSWV Risk Assessment Report – June 5, 2018
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Collapse ▲This is the seventeenth thrips flight and TSWV risk assessment report. Read about why we are posting these reports and more in our first report. Read more about tobacco thrips biology and TSWV transmission.
Fourth generation thrips flights are predicted or have begun at all of our report sites. We will continue to post reports through next week. If you are seeing disease develop in your fields or in your area, please let us know–we are interested to see how predictions are lining up with reality.
Growers are reminded to use the most recent information available to make management decisions. Predictions are most accurate closer to predicted thrips flight dates. The information presented here is intended to supplement, but not replace, farm-specific predictions.
One of our extension agents pointed out that ZIP codes were not generating reports at some locations. If an address or ZIP code produces an error message at the Tobacco Thrips and TSWV Risk Forecasting Tool, please use the map to select your location instead. Using the map has not produced error messages.
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 in a typical year. Last year the third generation thrips flight occurred on May 10. This year, the third generation tobacco thrips flight (the generation that typically transmits the most TSWV) was expected to begin on May 23. Because TSWV infection is predicted to be similar to a typical year and Kenly is a lower risk location, additional treatments against TSWV are not recommended for this location.The fourth generation thrips flight, which can also contribute to some TSWV transmission is predicted to occur on June 10. Tobacco plants transplanted more than 5 weeks prior to June 10 are at lower risk of TSWV infection and likely do not require additional treatment. Growers who are interested in making additional treatments against TSWV should consult their local extension agent for recommendations or contact Hannah.
Beulaville is a higher TSWV risk site in Duplin County. As of today, TSWV infection risk in Beulaville is lower than in a typical year. The third generation tobacco thrips flight typically transmits the most TSWV. Last year the third generation thrips flight occurred on May 4. This year, the third generation tobacco thrips flight (the generation that typically transmits the most TSWV) occurred on May 18. Treatments effective at reducing TSWV infection in tobacco must be applied before predicted thrips flights, so additional treatments against TSWV are not recommended for this location. The fourth generation thrips flight, which can also contribute to some TSWV transmission was predicted to begin on June 3. Treatments effective at reducing TSWV infection in tobacco must be applied before predicted thrips flights, so additional treatments against TSWV are not recommended for this location at this time.
Kinston is a moderate TSWV risk site in Lenior County and also houses the NCDA & CS Cunningham Research Station where we conduct tobacco research. As of today, TSWV infection risk in Kinston is slightly lower than in a typical year. Last year the third generation thrips flight occurred on May 5. This year, the third generation tobacco thrips flight (the generation that typically transmits the most TSWV) began on May 20. Treatments effective at reducing TSWV infection in tobacco must be applied before predicted thrips flights, so additional treatments against TSWV are not recommended for this location. The fourth generation thrips flight, which can also contribute to some TSWV transmission is predicted to begin today, June 5. Treatments effective at reducing TSWV infection in tobacco must be applied before predicted thrips flights, so additional treatments against TSWV are not recommended for this location at this time.
New Bern is a higher TSWV risk site. As of today, TSWV infection risk in New Bern is lower than in a typical year. Last year the third generation thrips flight occurred on May 5. This year, the third generation tobacco thrips flight (the generation that typically transmits the most TSWV) began on May 18. Treatments effective at reducing TSWV infection in tobacco must be applied before predicted thrips flights, so additional treatments against TSWV are not recommended for this location at this time. The fourth generation thrips flight, which can also contribute to some TSWV transmission is predicted to occur on June 3. Treatments effective at reducing TSWV infection in tobacco must be applied before predicted thrips flights, so additional treatments against TSWV are not recommended for this location at this time.
Windsor is a moderate TSWV risk site. As of today, TSWV infection risk in Windsor is about the same as in a typical year. Last year the third generation thrips flight occurred on May 19. This year, the third generation tobacco thrips flight (the generation that typically transmits the most TSWV) was expected to begin yesterday, May 27. Because treatments effective against TSWV are preventative, no additional treatments are recommended at this point. The fourth generation thrips flight, which can also contribute to some TSWV transmission is predicted to occur on June 13. Tobacco plants transplanted more than 5 weeks prior to June 13 are at lower risk of TSWV infection and likely do not require additional treatment. Growers who are interested in making additional treatments against TSWV in later transplanted tobacco should consult their local extension agent for recommendations or contact Hannah.
Whiteville is a higher TSWV risk site in Columbus County and also houses the NCDA & CS Border Belt Tobacco Research Station where we conduct tobacco research. As of today, TSWV infection risk in Whiteville is about the same as in a typical year. Last year the third generation thrips flight occurred on May 2. This year, the third generation tobacco thrips flight (the generation that typically transmits the most TSWV) began May 17. Treatments effective at reducing TSWV infection in tobacco must be applied before predicted thrips flights, so additional treatments against TSWV are not recommended for this location at this time.The fourth generation thrips flight, which can also contribute to some TSWV transmission is predicted to occur on June 3. Treatments effective at reducing TSWV infection in tobacco must be applied before predicted thrips flights, so additional treatments against TSWV are not recommended for this location at this time.
Clinton is a higher TSWV risk site in Sampson County. As of today, TSWV infection risk in Clinton is slightly less than in a typical year. Last year the third generation thrips flight occurred on May 3. This year, the third generation tobacco thrips flight (the generation that typically transmits the most TSWV) began May 16. Treatments effective at reducing TSWV infection in tobacco must be applied before predicted thrips flights, so additional treatments against TSWV are not recommended for this location at this time. The fourth generation thrips flight, which can also contribute to some TSWV transmission is predicted to occur on June 2. Treatments effective at reducing TSWV infection in tobacco must be applied before predicted thrips flights, so additional treatments against TSWV are not recommended for this location at this time.
In order to get the most accurate risk assessment, we recommend you enter your own farm data into the TSWV and Tobacco Thrips Risk Forecasting Tool. The following information is needed:
1. Field location (address, coordinates, nearest ZIP code, or selected from 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
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