FORECAST DISCUSSION: Friday, July 16: *** Disease Update *** Blue Mold has been discovered in southern Maryland. Arv Grybauskas reports blue mold has been discovered in a small field in St. Mary's County, near Mechanicsville. Active sporulation is occurring with both old and new lesions present. Growers near the source are at Low Risk this weekend. This source is being added to the forecasts. Paul Shoemaker in NC indicates that blue mold has spread to Haywood and Mitchell Counties in the central NC mountains. Disease activity is low in these new areas.
*** Conditions will be much less favorable for blue mold this weekend. *** No long-range transport and deposition events are expected this weekend. However, localized disease development is possible in some regions. There is Moderate Risk for the southern Appalachian Mountains each day. This includes northwest NC, northeast TN, and extreme southwest VA. Growers in the eastern Carolinas are at Moderate Risk Friday, Low Risk Saturday and Sunday. Growers in southern PA and southern New England are at Low Risk Friday and Saturday, Moderate Risk on Sunday. In the Ohio Valley.....growers near active sources who receive any afternoon showers this weekend will be at Weakly Moderate Risk. Other growers will be at Low Risk. TK
Blue Mold Active in the Plant Bed and Greenhouse (click on small image for larger image)
What should one look for?
Seriously Threatening Sources: None
HIGH RISK areas: None
*** NEW FEATURE ***
County Map of New and Existing Outbreaks, 1999
(Red = New, 1 to 7 days; Blue = Active, > 7 days; Green = Old)
Current Sources:
Previous Sources:
San Antonio de los Banos, Cuba
Papantla, Veracruz, Mexico
Tepic, Nayarit, Mexico
Corpus Christi, Texas
Tifton, Georgia
***** NOTE: These forecasts/outlooks only apply to disease development from airborne transport of spores!!! We do not have the capability to ascertain blue mold development by other means, such as transplanting of infected seedlings, nor will we attempt to do so. Please consult the Extension Service personnel in your area if you have concerns about these matters! *****
This service is provided by the North Carolina State University departments of Plant Pathology and Marine, Earth, and Atmospheric Sciences.
