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UMaine Extension Publications Distribution Center
5741 Libby Hall
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Orono, ME
Phone: 207-581-3792
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Late Blight Alert!


New or Notable:

Tomato and Potato Late Blight Information for the Upcoming Growing Season

Many farmers and gardeners in Maine saw late blight on their potatoes and tomatoes for the first time in 2009 and experienced firsthand the amount and speed of crop destruction that it can cause. Learn about the causes and how to recognize it in your garden.

Potato Late Blight

Information on the disease, life cycle, symptoms and control.

Late Blight Prediction in Maine

Potato late blight is one of the most destructive foliar diseases on potatoes and has been reported for more than 150 years. Few plant diseases result in the widespread misery and despair produced by potato late blight. Potato late blight is caused by Phytophthora infestans; a fungus-like organism that overseasons in infected tubers, cull piles, and in infected volunteer plants. Late blight control in Maine depends on proper application—timing, rate, and coverage—of protectant materials. The use of predictive models can permit late blight control with fewer, timelier chemical applications, which will help control costs and reduce chemical inputs to the environment.

The University of Maine Cooperative Extension Pest Management Office in Orono will look at any samples that you may suspect have been infected. Visit the Cooperative Extension Insect and Plant Disease Diagnostic Lab for instructions on how to send in a sample.



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Growing Rhubarb in Maine Growing Rhubarb in Maine

Rhubarb is a cool-weather perennial that thrives in the northern states and is one of the first crops ready for eating. Learn more about growing, harvesting, preparing and cooking rhubarb. 6 pages. © 2015 by University of Maine Cooperative Extension. Download it for free or add it to your cart to buy a color copy.

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White Rot of Garlic and Onions White Rot of Garlic and Onions

Garlic and onion white rot is caused by the fungus, Sclerotium cepivorum Berk. White rot is the most important and destructive of the fungal diseases of onion and garlic. While all Allium-family plants can be infected with white rot, onion and garlic are the most susceptible. 3 pages. © 2015 by University of Maine Cooperative Extension. Download it for free or add it to your cart to buy a color copy.

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