Tag: Disease
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Weekly Field Update – 6/23/25
Keep an eye on the Upcoming Events tab periodically so you don’t miss any of our winter/spring meetings. Also, check out the latest episode of the SC Grower Exchange Podcast below. Don’t forget to look at our Resources tab for links to crop handbooks, helpful websites, and related blogs. Be sure to scroll all the…
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Biologicals and Their General Performance Against Strawberry Diseases
Johanna Wesche and Guido Schnabel, Clemson University “Do biologicals work?” That is a frequently asked question coming not only from strawberry growers, especially in light of increasing resistance issues with many of the conventional fungicides and the fungicide insensitivity of Neopestalotiopis sp. In our recent article, “Biologicals Made Easy: Grouping and Understanding Biological Fungicides,” we…
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Weekly Field Update – 6/16/25
Regular rain continued throughout the state last week. Summer officially begins later this week. We’re well into harvest now for most warm-season crops, and disease is a major concern. See details below. Keep an eye on the Upcoming Events tab periodically so you don’t miss any of our winter/spring meetings. Also, check out the latest…
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Sudden Wilt or Pythium Root Rot On Mature Cantaloupe
From Clemson Plant Pathologist Tony Keinath After a very dry April, the heavy rains in May triggered a case of Pythium root rot in one cantaloupe field in South Carolina in the past 2 weeks. Another name for Pythium root rot on mature cucurbits is “sudden wilt” to distinguish it from the more common damping-off…
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Weekly Field Update – 6/9/25
We saw some more rain and storms across the state last week. Watermelons and tomatoes are really coming in and a few strawberry growers are still hanging on. Disease has made a significant increase recently and piercing/sucking insects are on the rise. See details below. Keep an eye on the Upcoming Events tab periodically so…
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Weekly Field Update – 6/2/25
Disease has begun to set in across the state as lots of crops come to harvest. More rain is in the forecast for this week, so now is the time to make sure you are current on your disease programs. Blueberries, blackberries, peaches, ccucurbits, and potatoes are all being harvested now. See details below. Keep…
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Weekly Field Update – 5/27/25
The forecast is showing a damp week for the state, giving disease a good opportunity to develop. Cucurbit downy mildew was found in cucumbers in Charleston late last week. Use every dry opportunity you have to make sure you are on top of your disease management porgrams. See details below. Keep an eye on the…
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Question of the Week – Sclerotia
What are the black structures developing inside the stem of this dying bupleurum? These black structures are sclerotia, which are signs of the disease sclerotinia stem rot, and resting structures for the pathogen, Sclerotinia sclerotiorum. Sclerotia are hardened masses of mycelia, which enable the fungus to survive environmental stresses, such as a lack of a suitable…
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Weekly Field Update – 5/19/25
The state warmed up and dried out over the couse of the past week. Disease is showing up in places as a result of all the moisture as well as mechanical damage to plants. Harvest is near for blueberries, blackberries, cucurbits, tomatoes, and peppers. See details below. Keep an eye on the Upcoming Events tab…
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Weekly Field Update – 5/12/25
South Carolina is soaking wet right now after Sunday and Monday morning rain. This will bring an end to the strawberry season for some growers. Disease potential is expected to be high over the next week as temperatures warm. See details below. Keep an eye on the Upcoming Events tab periodically so you don’t miss…
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