Disease Control

Late blight detected in central Wisconsin, southern Washington

Late blight has been confirmed in a potato field in central Wisconsin. Testing done by University of Wisconsin-Madison showed late blight from a field sample from Wood County, associate professor and Extension specialist Amanda Gevens... more »

Cucumber downy mildew spores detected in Michigan

Our lab has established a network of spore traps in major cucumber production areas in Michigan. This year, we have the ability to distinguish between the spores of hop downy mildew and cucumber downy mildew.... more »

Revysol fungicide by BASF receives EPA registration

BASF received the U.S. Environmental Protection Agency (EPA) registration for Revysol fungicide, its newest active ingredient (AI). The first and only isopropanol azole of its kind in the market, the AI provides fast-acting and long-lasting... more »

Wet, humid weather challenges vegetable disease management

Moisture drives diseases more than temperature, especially this time of the growing season. The frequent rains and days with high humidity keep leaves wet for an extended period of time. The longer leaves are wet... more »

Georgia growers need to apply fungicides to curb downy mildew disease

Georgia vegetable farmers should be on alert as downy mildew disease has been spotted in at least three southern Georgia counties this spring. Additional counties could follow as weather conditions remained favorable for the disease... more »

7 questions with plant pathologist Chaks Mattupalli

Chakradhar “Chaks” Mattupalli’s experience in agricultural financing in India put him on a very different career path: plant pathology. In dealing with growers on a daily basis, Mattupalli was inspired by their stories of dealing... more »

Anthracnose on strawberries increasingly problematic in Mid-Atlantic

Anthracnose is caused by fungi in the genus Colletotrichum, and has been affecting mostly plasticulture plantings, but also matted-row plantings of susceptible cultivars. Some strawberry growers in southeastern Pennsylvania have already been finding their green fruit to... more »

Flea beetles feeding, tomato early blight seen in Pennsylvania

I visited a few tomato fields this week and found 2 to 4-week-old tomato plants with some early blight (Alternaria solani) and in some cases bad early blight lesions. This is very early in the... more »


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