Tag: fungus
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Question of the Week – Corn Smut
What is Zack cooking this week? Corn smut (Ustilago maydis) is quite the unattractive name for a very delicious fungus. In my opinion, a more fitting and fancier name is given to the delicacy in Hispanic cultures—huitlacoche or Mexican truffle. The fungus overwinters in the soil and infects corn ears via the silk. The fungus then…
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Question of the Week – Armillaria Root Rot
What is developing at the base of this peach tree? The picture illustrates the fruiting bodies of the Armillaria root rot fungus, which is often a good sign of the disease. Armillaria root rot, also referred to as oak root rot, is caused by the pathogen Desarmillaria caespitosa in the Southeast. The symptoms of armillaria…
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Gray Leaf Spot on Heirloom Tomatoes
From Clemson Plant Pathologist Tony Keinath Gray leaf spot has been found in a home garden in Greenville County and on a farm in Charleston County, South Carolina. This disease is the most common foliar problem on heirloom tomatoes. ‘Cherokee Purple’ is particularly susceptible. The recent hot, humid, rainy weather is ideal for the gray…
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Question of the Week – Large Leaf Spot
This week, the question was: What is wrong with this chestnut leaf? This leaf is showing symptoms of a fungal disease called large leaf spot (Monochaetia sp.) that affects oaks and chestnuts. The appropriately named spots may reach 2 inches wide and stretch across the entire leaf, killing large amounts of tissue. This disease is…
The South Carolina Grower 