|Type:||Fungi and Bacteria|
Leaf Spots are circular lesions found on the leaves of plants, caused by either bacteria of fungi.
Symptoms and Signs[edit | edit source]
Initial infections are small, circular spots, usually with a differently colored zone on the outer edge. Severe cases cause distorted leaves or blight.
Life Cycle[edit | edit source]
Spores or bacteria overwinter on fallen leaves or buds. Growth is favored by moist conditions on the leaf surface.
Host Range[edit | edit source]
Most of the pathogens are quite selective.
Controls[edit | edit source]
- Cultural Controls: Prune or thin to allow good air circulation.
- Physical Removal: Clean up thoroughly in the autumn to reduce the amount of spores.
- Chemical Controls (synthetic): Neem Oil, Copper-based Sprays