Algal Leaf and Fruit Spot of Guava
Cephaleuros virescens
Guavaalgal
A parasitic algal disease producing rust-colored, velvety circular spots.
Symptoms
Rust-colored, velvety, circular spots on leaves and fruit.
Favorable conditions
- •High humidity and excess moisture on foliage
- •Dense canopy limiting light and airflow
Management
- 1Apply copper fungicide sprays
- 2Prune for better airflow and light penetration
- 3Avoid excess moisture on foliage
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