From Eric Sideman at MOFGA:
The first confirmed report of late blight in Maine just came through less than an hour ago.
A gardener in Waldoboro, Maine has late blight on tomatoes.
At this time I have no more details but will surely get them to you all as they develop.
Please go out now and scout your potatoes and tomatoes for signs. Get back to me if you suspect it. Remember, there are a lot of problems out there that can be confusing, e.g., I have mention in earlier Pest Reports blackleg, early blight and tarnished plant bug feeding.
If you don’t remember what to look for, take a look at these fact sheets:
Maine Organic Farmers and Gardeners Association
Phone: 603 269 6201
And from Becky Sideman at UNH:
Dear NH Veg and Berry Newsletter Recipients:
The UMaine plant diagnostic lab just confirmed late blight on tomato in a home garden in Waldoboro, Maine.
Thus far, late blight has NOT been confirmed in New Hampshire. Cheryl has diagnosed several potato samples with black leg, and we’ve seen many potato plantings that are showing signs of damage by potato leafhoppers, and potatoes with black leaf tips that appear to be the result of tarnished plant bug feeding.
However, the Maine diagnosis means that we need to stay on the lookout, because late blight could very well be in the area. Growers that have not been applying protectant fungicides (e.g. chlorothalonil, copper) should start doing so if they intend to, and should continue to scout for symptoms of late blight on tomato as well as potato. Any suspicious samples should be sent in to the plant diagnostic lab for confirmation. Digital photos can also be quite useful — and fast. Remember that samples that are sent in for late blight confirmation are free. Diagnostic lab info can be found at: http://extension.unh.edu/Agric/AGPDTS/PlantH.htm
Excellent photos of symptoms of late blight can be found at:
We’ll keep you posted as we learn more, or if late blight is found within New Hampshire.
An addendum… Rob Wick at UMass just confirmed late blight on tomato in Hadley, MA.
Assoc. Ext.Professor, Sustainable Horticulture
G48 Spaulding Hall, Durham NH 03824
Durham NH 03824
(P) 603-862-3203 (F) 603-862-2717