Tag: downy mildew
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Weekly Field Update – 7/5/22
Be sure to scroll all the way to the bottom to see this week’s Question of the Week and check back on Thursday for the answer! Coastal Region Rob Last reports, “Disease pressure is likely to continue to increase given the recent welcome rainfall. Gummy stem blight can be found in cucurbit fields along with […]
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Weekly Field Update – 6/27/22
Be sure to scroll all the way to the bottom to see this week’s Question of the Week and check back on Thursday for the answer! Coastal Region Zack Snipes reports, “It is hot and very, very dry in the Lowcountry. We desperately need some rain on the coast. Many irrigation ponds are at very […]
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Planting Cucumbers Early Avoids Downy Mildew and Increases Yield without Fungicides
From Clemson Plant Pathologist Tony Keinath Growers who have flexibility in deciding when to plant cucumbers should plant them within 1 month of the earliest recommended planting date for their region. Planting dates for commercial growers are in the Southeast Vegetable Crop Handbook (Pg 75). Planting dates for home gardeners are in fact sheet HGIC […]
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Weekly Field Update – 12/6/21
Coming up this Thursday (12/9) will be Part 2 of the Organic and Sustainable Vegetable Grower Meeting. Speakers will be discussing bed formation and alternative fertilizers. This virtual meeting will start at 9 am. Click here to register. Coastal Region Rob Last reports, “Pest and disease activity in the area remain low with overall good […]
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Fog and Downy Mildew on Collards
From Clemson Plant Pathologist Tony Keinath. Foggy fall mornings are nature’s warning that conditions are favorable for brassica downy mildew to get started on collard and kale. Remember that because downy mildew affects the harvested, edible portion of the crop, control practices must be very effective to increase yields. Use the following practices to maximize […]
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Weekly Field Update – 7/19/21
Statewide Dr. Tony Keinath’s remarks on fungicide stewardship: Growers who are applying newer fungicides that are pre-mixes of two active ingredients do not need to add another fungicide to the tank mix. Pre-mixes can easily be identified by the two FRAC Codes on the label in the top right corner. Please consider the following points: […]
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Weekly Field Update – 7/6/21
Statewide Dr. Tony Keinath reports, “Basil downy mildew was found in mid-June in Charleston. Symptoms start as faint yellowing of leaves, which eventually show brown spots surrounded by yellow areas. To see the spores, look on the bottom of a symptomatic leaf. Sometimes it helps to hold the leaf up to a light source (but […]
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Downy Mildew on Watermelon Found in SC
From Clemson Plant Pathologist Tony Keinath. Downy mildew was found on watermelon this week in Allendale and Barnwell counties. Although downy mildew does not infect fruit, it reduces sugar content once 1 in 4 leaves (25%) are infected. All watermelons should be sprayed with a fungicide effective against downy mildew. See pages 214-215 in the […]
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Weekly Field Update – 6/1/21
Coastal Rob Last reports, “On the whole disease pressure in most crops remains low. The exception is cucurbits where we are finding powdery mildew in cucumbers as well as downy mildew. Cucurbit bacterial wilt has been found in isolated fields. This disease is characterized by wilting of one vine or the whole plant. Once cut the stem […]
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Weekly Field Update – 5/24/21
Coastal Rob Last reports, “As we mentioned last week, cucurbit downy mildew has been confirmed in cucumber crops locally. All cucurbit growers should be applying downy-mildew specific fungicides such as Ranman tank mixed with either chlorothalonil or mancozeb. Other pests and disease levels in cucurbits remain low. Tomatoes and peppers are developing well with good fruit […]
The South Carolina Grower 