Corky Root Pyrenochaeta lycopersici
Symptoms: Infected plants gradually decline and die when placed under the stress of a fruit load. Growing points die back. Roots have irregular, black, cracked lesions on them, and the root system eventually dies.
Control: Corky root is most severe on greenhouse tomatoes, where the cool soil conditions favor its development and spread. Soil fumigation is the most effective control.

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