Tag: pythium
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Sudden Wilt or Pythium Root Rot On Mature Cantaloupe
From Clemson Plant Pathologist Tony Keinath After a very dry April, the heavy rains in May triggered a case of Pythium root rot in one cantaloupe field in South Carolina in the past 2 weeks. Another name for Pythium root rot on mature cucurbits is “sudden wilt” to distinguish it from the more common damping-off…
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Weekly Field Update – 6/9/25
We saw some more rain and storms across the state last week. Watermelons and tomatoes are really coming in and a few strawberry growers are still hanging on. Disease has made a significant increase recently and piercing/sucking insects are on the rise. See details below. Keep an eye on the Upcoming Events tab periodically so…
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Weekly Field Update – 6/2/25
Disease has begun to set in across the state as lots of crops come to harvest. More rain is in the forecast for this week, so now is the time to make sure you are current on your disease programs. Blueberries, blackberries, peaches, ccucurbits, and potatoes are all being harvested now. See details below. Keep…
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Stem Rot on Transplanted Tomato in March 2024
From Clemson Plant Pathologist Tony Keinath and Food Crops Agent Zack Snipes “Stem and root rot” is the term used to describe a disease on recently transplanted vegetable crops, like tomato, pepper, watermelon, cantaloupe, and cucumber. Tomato transplants with stem rot were observed last week along the coast of South Carolina. A proper diagnosis of…
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Damping-Off on Direct-Seeded and Transplanted Vegetable Crops
From Clemson Plant Pathologist Tony Keinath “Damping-off” refers to root and stem rot on young seedlings of direct-seeded crops. “Stem and root rot” is used to describe the same disease on transplanted crops. I will use the term “seedling disease” when information below applies to both types of crops. In South Carolina, the water mold…
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2023 Fusarium Wilt on Seedless Watermelon Experiment – Week 3 Observations
From Clemson Plant Pathologist Tony Keinath This year’s Fusarium wilt experiment includes three seedless cultivars, three fungicide treatments applied via drip irrigation, and grafting. This experiment is supported in part by a USDA SCRI grant. There also is a side experiment with SP-7 pollenizers grafted onto ‘Carolina Strongback’ rootstock and non-grafted SP-7 supported in part…
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Pythium Damping-Off of Seedless and Pollenizer Watermelons
From Clemson Plant Pathologist Tony Keinath. Stand loss in transplanted spring seedless watermelons is usually not a serious issue in South Carolina, due to relatively sandy soils in the major production areas. Two pathogens that can cause post-transplanting damping-off and plant death are the fungus Fusarium and the water mold Pythium. Fusarium can kill seedlings…
The South Carolina Grower 