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The key symptom of algal leaf spot is the formation of raised blotches on the leaves. The disease mostly affects weaker plants in the nursery or landscape.
The key symptom of algal leaf spot is the formation of raised blotches on the leaves. The disease mostly affects weaker plants in the nursery or landscape.
Continuous rain during warm and windy conditions, serves as a major factor in spread of the algal spores.
Continuous rain during warm and windy conditions, serves as a major factor in spread of the algal spores.
Severely lichenized algal leaf spot.
Severely lichenized algal leaf spot.

Magnolia diseases

Bacterial causal agent: Pseudomonas syringae pv. syringae; P. cichorii

ALGAL LEAF SPOT