Tag: Disease
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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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Question of the Week – Turmeric
This week, the question was: What is this crop being grown on John’s Island, SC? This is turmeric. This plant is grown for its swollen roots (rhizomes) which will be dug and harvested in the fall. Turmeric is a close relative of ginger that is a traditionally popular ingredient in Asian, African, and Caribbean dishes.…
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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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Charcoal Rot Showing Up in Cantaloupe
From Clemson Extension Agent Rob Last and Plant Pathologist Tony Keinath. Charcoal rot was identified in a cantaloupe crop in South Carolina this week. The fungus responsible for the disease is Macrophomina phaseolina, a soil-borne fungus that survives as microsclerotia. The fungus affects more than 800 host plants. These range from corn and soybean to…
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Question of the Week – TSWV
This week, the question was: What is going on with this pepper leaf? This pepper leaf is showing symptoms of a virus, likely tomato spotted wilt virus (TSWV). TSWV is an important virus of tomato, pepper, eggplant, peanuts, tobacco, etc. that causes significant yield loss to infected plants. Numerous ornamental and weed species are also…
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Weekly Field Update – 6/20/22
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, “Pest and diseases are beginning to increase in the area. Powdery mildew is apparent in cucurbit crops. The most efficacious treatments are Vivando and…
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Resistance to Tebuconazole is Widespread in the Gummy Stem Blight Fungus in South Carolina
From Clemson Plant Pathologist Tony Keinath. Cucurbit growers should reduce the use of tebuconazole to manage gummy stem blight as the pathogenic fungus has become moderately resistant to this very commonly used fungicide. Seven watermelon fields were sampled in 2019 (six fields) and 2021 (one field) in Beaufort, Bamberg, Barnwell, and Hampton counties. Of 229…
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Weekly Field Update – 6/13/22
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! Statewide Extension Entomologist Tom Bilbo reports, “As tomatoes and other fruiting vegetables progress, make sure you’re protecting yields from insect and mite pests. I’ve seen a fair bit of…
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Managing Southern Blight on Tomato and Pepper After Detection
From Clemson Plant Pathologist Tony Keinath. As reported in the June 6 edition of SC Grower, southern blight is showing up in crops of tomato and pepper. At this late date in the growing season, the best fungicide option for conventional growers is Priaxor, two applications made 2 weeks apart at a cost of $34…
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Field Testing for Bacterial Wilt
Bacterial wilt and Southern blight have been showing up in SC over the last couple weeks. While both diseases cause indistinguishable wilting in the infected plant, it is important to determine which disease is present in order to appropriately manage it. The test shown below is a quick field test that will help distinguish between…
The South Carolina Grower 