Tag: disease control
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Downy Mildew Found on Watermelon in SC
Downy mildew was found yesterday, June 17, 2020, in one watermelon field in Bamberg County, South Carolina. All growers should immediately spray watermelon with Ranman, Revus, or Gavel to protect their crops from downy mildew. In addition to direct yield loss, loss of vine cover can expose fruit to sunburn (when the sun comes out…
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Field Update – 6/8/20 (Downy Mildew Arrives in SC)
Statewide Downy mildew was found in Charleston, SC late last week on cucumbers. This is the first confirmed report of the 2020 season. If not already doing so, all cucumber and canteloupe growers should begin applying protective fungicides to help prevent or manage downy mildew. Ranman tank-mixed with a protectant such as chlorothalonil, mancozeb, or…
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Field Update – 3/9/20
Coastal Zack Snipes reports, “Finally we have a break from the rain! I lost count of how many inches of rain we had. In fields with clean ditches and water furrows, water drained off pretty quickly, however, some fields suffered from all the rain. If your fields are wet, try to stay out of them…
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Field Update – 3/2/20
Coastal Zack Snipes reports, “The horticulture team got the opportunity to tour some really nice greenhouse/transplant providers last week. One point I’d like to bring up is transplant quality. Yes, quality transplants cost more upfront but healthy, quick-growing plants will help you recoup your investment. I see lots and lots of subpar transplants going into…
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Field Update – 10/7/19
Statewide Dr. Tony Keinath reports, “Growers who have “slacked off” on fungicide applications during the dry spell should resume biweekly or weekly fungicide sprays in areas that are or have received rain. For most fungal diseases, the amount of rain determines how severe the disease becomes. The more rain, the more fungicide sprays are needed.…
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Field Update – 8/26/19
Coastal Region Dr. Tony Keinath reports, “Phytophthora crown rot was observed on bronze fennel in a home landscape (mine) in Charleston. Fennel apparently is a new host for Phytophthora (species not identified). Foliar symptoms include a progressive yellowing, starting with the older leaves. Symptoms on the lower stem and leaf sheath are a water-soaked, “greasy”…
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Alternaria Leaf Blight Common This Year
From Clemson Extension Plant Pathologist Tony Keinath. During the 2019 Cantaloupe Disease Survey, Alternaria leaf blight has been found in several fields. It was more common in fields that had not been sprayed recently than in fields sprayed on a regular schedule. It also was found in a field rotated only one year out of…
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Downy Mildew found in SC
From Clemson Plant Pathologist Dr. Tony Keinath: The first SC report of cucurbit downy mildew this year came on June 6 from a crop consultant, who found it on cucumbers in Bamberg County. Growers should spray all cucumber and cantaloupe crops to prevent or manage downy mildew. The cheapest downy mildew fungicide is Ranman. It…
The South Carolina Grower 