Hosts -Banana, tobacco, tomato, potato, eggplant. Can also attack peanuts, soybeans, and plantains. Known as Granville wilt of tobacco or a brown rot of potato. Symptoms -Sudden wilt. Pseudomonas canker disease - P. syringae pv.
Fungal cankers are often sunken and soft.
Bacterial cankers often appear as splits in the stem, necrotic areas within the woody cylinder, or as scabby outgrowths on the surface of the tissue. Common name - Bacterial canker and gummosis of stone fruit trees. It also affects pear, citrus, lilac, rose, ornamentals, some vegetables and some small grains. Disease is known as bud blast, blossom blast, dieback, spur blight, and twig blight. Symptoms -forms cankers accompanied by gum exudation.