Tag: fungicides
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Cucurbit Downy Mildew Arrives in SC
Prepared by Rob Last. Cucurbit downy mildew has been identified in South Carolina this morning (5/25/22). The identification came from a field of cucumbers in Bamberg County. Please remember to make fungicide applications seven days apart, a stretch longer than this is likely to increase the potential for disease spread. For cucumbers, some suggested products […]
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Fungicides to Manage Cercospora Leaf Spot on Beet
From Clemson Plant Pathologist Tony Keinath. Cercospora leaf spot is the most damaging disease on beet greens and bunched beets. This disease is one of the few diseases I have worked with that can be managed equally well by conventional and organic fungicides. Based on previous research in New York with processing beets, I tested […]
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Preparing for Gummy Stem Blight in Fall Cucurbit Crops
From Clemson Plant Pathologist Tony Keinath. Gummy stem blight is more common and more severe on fall cucurbit crops than crops grown in the spring. The cooler weather and longer dew periods in the fall provide an ideal environment for the fungal pathogen to grow and spread. Gummy stem blight is most common on watermelon […]
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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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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 – 6/14/21
The Coastal Research and Education Center Field Day is coming up this Thursday, June 17 beginning at 8:30. You must have registered to attend this year. Coastal Zack Snipes reports, “We received some welcomed rain but 5+ inches in a day or so was a bit much. Conditions this week will dry things out. I cannot […]
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Weekly Field Update – 6/7/21
The Coastal Research and Education Center Field Day is coming up on June 17 beginning at 8:30. You must register to attend this year. Registration may be found here. Statewide Dr. Matt Cutulle reports, “The coastal rain events of the past week resulted in a lot of weeds popping up. For fields not planted yet […]
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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 […]
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Cucurbit Downy Mildew Found In SC
Cucurbit downy mildew was found in SC this week in Bamberg, Barnwell, and Calhoun Counties. In each case it was found on cucumbers and for now severity seems low. This is about two weeks earlier than in the past couple years. If not already doing so, all cucumber and cantaloupe growers in SC should begin […]
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Are Hydrogen Peroxide Products Effective Fungicides?
From Clemson Plant Pathologist Dr. Tony Keinath. Should products with hydrogen peroxide, alone or combined with peroxyacetic acid, be used like fungicides on vegetables? It’s difficult to give just one answer to this question because there are so many different vegetables and diseases to consider. Here are a few important things to think about. Hydrogen […]
The South Carolina Grower 