Vegetable Diseases

Symptoms of downy mildew include tan to dull yellow angular lesions (spots) that enlarge.

Soft, sunken, dark spots on vegetables are a symptom of Anthracnose disease.

Reasons why the leaves of vegetable seedlings curl

White rot is a destructive disease of onions and garlic.

Specific virus diseases are difficult to distinguish and produce a wide range of symptoms including stunted, slow-growing plants, twisted, crinkled, cupped, or deformed leaves, and leaf discoloration (yellow mottling and mosaic patterns, ringspots, and dark-green banding).

Many bacteria, fungi, and viruses can cause blights. Southern blight is caused by the fungus Sclerotium rolfsii. Most blights are favored by certain weather conditions, such as hot and humid or cool and moist.

Symptoms of verticillium include older leaves turning yellow, dying, and dropping off infected plants.