Tag: Disease
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What is NOT Proper Crop Rotation
From Clemson Plant Pathologist Tony Keinath. There seems to be some confusion about what is a proper crop rotation to manage diseases caused both by pathogens that survive a few years in soil and pathogens that survive in soil longer than anyone can measure. Here are some rotations I have heard about that are not…
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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 – 6/21/21
Coastal Rob Last reports, “Given the rainfall and humidity levels, we are seeing increases in foliar and fruit diseases on a range of crops. This includes cottony leak in cucumbers, anthracnose in pepper, tomatoes, and cucurbits. Also, please be aware cucurbit downy mildew is very active now. As a result, it is going to be really important…
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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 – 5/17/21
Check out the new podcast, “The SC Grower Exchange” featuring Clemson Extension fruit and vegetable agents. The podcast is moderated by Sarah Scott from Edgefield and covers a more detailed look at what is happening in the fields across the state. New episodes are recorded weekly, so listen weekly and subscribe through Spotify, Google, or…
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Field Update – 5/10/21
Statewide Dr. Matt Cutulle reports, “I have received calls regarding injury from Curbit in direct seeded cucumbers this year. This can be partly attributed to the colder spring we had this year and potentially seeding to shallow. Seeds germinating in that herbicide layer will have increased stunting in colder soil temperatures.” Coastal Rob Last reports,…
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Weekly Field Update – 5/3/21
Coastal Rob Last reports, “Botrytis (gray mold) is evident in places following rainfall. Sanitation and removal of the infected berries are critical to reducing inoculum loading. Fungicide applications will also be required to prevent spore germination and further spread of the disease. Where spider mite treatments have been applied, they have effectively reduced the populations but will…
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Weekly Field Update – 4/12/21
Statewide Dr. Matt Cutulle reports, “I am starting to see some goosegrass popping due to soil temperatures being 65 F. Goosegrass will typically be problematic in more compacted areas of the field. In most broadleaf crops a Select or Poast post-emergent application will control emerged goosegrass. PRE herbicide options include Curbit and Dual Magnum (If…
