brown and the leaves may drop prematurely. Plants generally can weather one season of a rust outbreak. Rust is primarily spread by windblown or water-splashed spores. Each type of rust is specific to certain hosts. Rust fungi infect under mild, moist conditions. Warm, humid weather increases the rust outbreaks. Since rusts are fungi, similar to powdery mildew; the treatment practices are the same. Just remember as a general rule that fungus relates to water. Reduce water and you may possibly reduce the risk of your plants being affected by a fungus. Because fungi are seasonal, the best control is prevention before they take hold rather than trying to control after the fact.

Leaf Spot:

Bacterial leafspot is noticed as small, water-soaked spots that are visible from both sides of a leaf. The spots usually are limited by leaf veins and have an angular, square, or rectangular appearance. They rapidly turn brown and with aging may dry out and become papery and tan. Lesions tend to be relatively small (less than 0.25 inch in diameter) and restricted to leaves. Leaf Spot is a seed-borne bacteria. It can spread rapidly via splashing water such as sprinkler irrigation. Disease development is favored in warm, moist conditions. Infected transplants will carry the bacteria into production fields.