Pythium Stalk Rot of Corn
Published: 03/19/2019
Pythium stalk rot is caused by the oomycete Pythium aphanidermatum. It can occur any time during the season, particularly if conditions are very wet. It causes decay of the first internode above the soil. The rind and the pith become soft, brown, and water-soaked. The stalk typically twists and falls over, but the plant may remain green for several weeks because the vascular tissue is not destroyed.
Some hybrids are more susceptible than others.
Symptoms of Pythium stalk rot.
Image: A. Robertson
Pythium stalk rot causes decay of the first internode above the soil.
Image: A. Robertson
Pythium stalk rot can cause the stalk to twist and falls over.
Watersoaked and rotted tissue due to Pythium stalk rot.
Pythium stalk rot causes decay of the first internode above the soil.
Symptoms of Pythium stalk rot.
Gallery Images: A. Robertson
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