Verticillium wiltCaused by: Verticillium albo-atrum
Problem Category: Fungal Disease
Symptoms: Symptoms appear first on lower leaves and spread upwards; initial symptoms of the disease may be visible as yellow blotches on the lower leaves of the plant; a rapid yellowing of leaves follows as the disease progresses; leaf veins turn brown and brown dead spots appear on the leaves; leaves may wilt then die and drop from the plant; the disease progresses upwards through the stem causing the plant to be stunted; leaves at the top of the plant remain green; fruits develop yellow shoulders and yield is reduced; loss of leaves results in fruit being susceptible to sun scald.
Comments: Fungi survive in crop debris in soil; disease emergence favors cool weather
Management: Plant resistant varieties; sanitize all equipment on a regular basis; rotate with non-susceptible crops.