Tomato Diseases


Black Leaf Mold
Pseudocercospora fuligena

Found in tropical and subtropical areas

Damage Symptoms

Yellow spots appear on the upper leaf surface. Gray to black spores are found on the lower leaf surface.

As the disease progresses, numerous lesions may coalesce to cover most of the leaves. Leafs roll and begin to dry. Many of the leaves remain on the plants, which appear covered with gray soot. Most of the leaves can be killed, thereby severely weakening the plant.

Conditions for Development

Disease development is favored by long periods of leaf wetness from dew, high humidity, or rainfall; and by moderate to warm temperatures.


Control

Applications of fungicide sprays are used. Tolerant cultivars have been reported in Florida USA.