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First 2017 Report of Cucumber Downy Mildew in Ohio
Downy mildew was confirmed this afternoon in cucumbers in West Salem (Wayne County), OH. This follows a report of downy mildew on pickling cucumbers and cantaloupe in Essex County, Ontario yesterday,...
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Cucumber Downy Mildew Spreading in Northern Ohio
Downy mildew pathogen sporulation on underside of a cucumber leaf. On July 5, downy mildew was found on cucumbers in Huron County, one week after the first 2017 Ohio report (Wayne County) of the...
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Phytophthora Blight Already a Problem in Cucurbits
Cucumber seedling with Phytophthora blight lesions on the cotyledons; pictured on the left is a positive immunostrip test for Phytophthora. Ohio cucurbit growers have been battling Phytophthora blight...
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Preventing Anthracnose in Peppers and Tomatoes
Hot rainy weather and fields with a history of anthracnose mean high risk for for this disease in peppers and tomatoes. Anthracnose, caused by species of the plant pathogenic fungus Colletotrichum,...
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More Cucumber Downy Mildew – Wood County, OH
We have just reported to the Cucurbit Downy Mildew ipmPIPE the first case of downy mildew on cucumbers in Wood County. While the sample was just received today, the grower estimated that symptoms were...
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Downy Mildew Confirmed on Melons in Wayne County and Cucumbers in Henry...
Downy mildew on cantaloupe. Downy mildew continues to spread on cucumbers in Ohio, with a confirmed report in Henry County this week. The disease is likely to be widespread on cucumbers in northern...
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Cucumber Downy Mildew Confirmed in Southeastern Ohio – Belmont County
We confirmed downy mildew in cucumbers collected yesterday from a small commercial field in Belmont County, near Barnesville. Disease incidence and severity were high in this field, which had not been...
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Cucurbit Powdery Mildew: A Little Late this Year but Start Scouting Now
We are just now finding powdery mildew on squash and pumpkins, several weeks later in the season than we have seen it during the past few years. So far disease incidence and severity have been...
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New Reports of Cucumber Downy Mildew in Central Ohio
Downy mildew symptoms on upper surface of a cucumber leaf. Cucumber downy mildew was confirmed in Delaware and Franklin counties this week. Cucumber and melon growers in northern and central Ohio...
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Mild Temps, Clouds and Rain = Increased Late Blight, Downy Mildew Risk
Late blight on tomatoes. Photo by Wayne County IPM Scout Chris Smedley. Late blight has been confirmed on tomatoes in Wayne and Ashland counties this week. We also found downy mildew in basil, cucumber...
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More Ohio Counties with Cucumber and Melon Downy Mildew
Cucumber downy mildew Downy mildew continues to take a toll on cucumbers and melons throughout the state. We have numerous reports of downy mildew on these two crops from northern and central Ohio,...
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Cucurbit Downy Mildew Update – Two More Ohio Counties
Map of downy mildew reports in Ohio (all on cucumber or melon) and neighboring states, August 21, 2017. Red indicates reports within last 7 days. www.cdmipmpipe.org Downy mildew was confirmed on...
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Are Pumpkin and Squash at Risk for Downy Mildew in Ohio?
Severe downy mildew on pumpkin, 2015. Downy mildew has still not been confirmed on pumpkins and squash in Ohio, although the disease is widespread on cucumbers and melons throughout most of the state....
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Downy Mildew Confirmed in Pumpkin and Zucchini in Ohio
Zucchini leaf with severe downy mildew. Small blocky lesions are yellow initially, then turn brown as leaf tissue dies. Diseased areas merge and eventually entire leaves die. While we suspected that...
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Getting to the Root of the Matter: Soilborne Diseases of Tomato
It is often easy to tell if a plant is sick when it is covered in spots or leaves and fruits are rotting away, but it can be much more difficult to tell when a plant has an infection in its roots or...
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Pepper Phytophthora Blight – First 2018 Report in Ohio
Phytophthora blight was diagnosed last week in pepper plants from Huron County, Ohio. This is several weeks earlier than we normally see Phytophthora blight in northern Ohio, but heavy rains and...
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No Cucurbit Downy Mildew Reported Yet in Ohio, but be Prepared
Cucurbit downy mildew reports as of July 12, 2018. cdmipmpipe.org Cucurbit downy mildew is marching up the U.S. eastern seaboard from Florida to central Pennsylvania, but has not been reported in Ohio,...
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Managing Cucurbit Powdery Mildew
Powdery mildew arrived this week on squash, pumpkins and other cucurbits throughout Ohio. It is a little late – we often see it by early- to mid-July. The fungus that causes cucurbit powdery mildew...
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First 2018 Report of Cucurbit Downy Mildew in Ohio
Cucumber downy mildew This has been a very unusual year for cucurbit downy mildew. The disease usually appears on cucumbers like clockwork on or around July 4 in one of the northern Ohio counties, but...
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Organic Options for Cucurbit Powdery Mildew Management
Powdery mildew is a scourge of summer for squash, pumpkins, and other cucurbits. Organic growers should always start with varieties with some degree of resistance to powdery mildew – seed catalogues...
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