Tag: powdery mildew
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South Carolina Field Update (May 4, 2026): Finally, Some Rain!
We finally received significant rainfall late last week and over the weekend. Monitor disease carefully as more rain is forecast for mid-week. Early peach varieties are coming into harvest, as strawberry and blueberry harvests continue. Key Takeaways for Growers This Week The latest episode of the SC Grower Exchange Podcast is available now. Lowcountry Report…
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South Carolina Field Update (April 27, 2026): Upstate Receives Some Rain As the Midlands and Lowcountry Remain Dry
The Upstate received some rain over the weekend, while nothing much materialized in the Midlands or along the coast. With cooler temperatures and more chances for rain this week, we’ll be keeping a close watch on disease pressure. Insect pests, including scale, Colorado potato beetle, cucumber beetles, and mites, are causing problems in some areas.…
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South Carolina Field Update (April 20, 2026): Near-Record Heat Brings Sun Scalding Issues In Strawberries
As strawberry harvest is in full swing, sunscald has appeared on berries across the state. Issues with powdery mildew and spider mites are also still active. While we are all anxiously awaiting the rain forecast for this weekend, remember that rain can easily damage ripening strawberries. Be ready to sanitize fields. Check out this recent…
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South Carolina Field Update (April 13, 2026): Insects Are Up, Disease Is Down As Drought Continues
Dry, dusty conditions continue as near-record heat sets in this week. Though overall disease pressure is low, powdery mildew is appearing in multiple crops. The weather conditions are allowing insects and mites to thrive. Clemson Extension agents have been working hard the past year writing a cut flower manual. The new manual will be available…
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2025 Recommendations to Manage Powdery Mildew on Cucurbits
From Clemson Plant Pathologist Tony Keinath Results from a June 2025 bioassay with powdery mildew on susceptible yellow summer squash ‘Early Prolific’ showed that, although all 8 fungicides reduced powdery mildew, 4 worked better than the rest. The Best Fungicides To Manage Powdery Mildew on Cucurbits Torino, Quintec, Gatten, and Vivando completely suppressed powdery mildew…
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Field Scouting and Identification of Diseases on Cucurbits in South Carolina
From Clemson Plant Pathologist Tony Keinath For anyone who missed the Preplant Cucurbit Meeting on Feb. 7, 2025, at the Edisto Research and Education Center, here is a recap of the main points on scouting fields for cucurbit diseases. Table 1 shows which diseases are most likely to show up on different crops. Use this…
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Weekly Field Update – 6/10/24
Finally, a little rain fell around the state, though things remain fairly dry overall. Disease and insect pests are becoming more common as tomatoes, cucurbits, and sweet corn come to harvest. See details below. Keep an eye on the Upcoming Events tab periodically so you don’t miss anything. Also, check out the latest episode of…
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Fungicide Sensitivity of Cucurbit Powdery Mildew in Charleston, SC
From Clemson Plant Pathologist Tony Keinath A fall fungicide sensitivity bioassay was done in October 2023, to find out which fungicides are most effective against powdery mildew on squash, watermelon, and other cucurbits. Methods: ‘Early Prolific’ yellow summer squash plants with three true leaves were treated with fungicides, water, or not treated. The following day,…
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Fungicide Sensitivity of Cucurbit Powdery Mildew in Charleston, SC
From Clemson Plant Pathologist Tony Keinath A fungicide sensitivity bioassay was done between June 1 and June 10, 2023, to find out which fungicides can be used against the current outbreak of powdery mildew on squash, watermelon, and other cucurbits. Methods: Yellow summer squash plants ‘Early Prolific’ with three true leaves were treated with one…
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Weekly Field Update – 6/5/23
Don’t forget about the Coastal REC Field Day coming up this week on Wednesday, 6/7/23. Come to see and hear updates on vegetable weed, disease, and insect research. Register here. Check out other upcoming meetings on the Upcoming Events tab, and don’t forget to look at our Resources tab for links to crop handbooks, helpful…
The South Carolina Grower 