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Rust

Symptom

Lesions typically from first on older leaves, and then spread to younger leaves. Symptom begin as small flecks and then reddish airborne spores are produced copiously within the lesions on the leaves. Later in the growing season, the lesions may appear dark because  black survival spores develop within the pustules. Severely affected leaves can be completely covered with pustules, turn chlorotic (yellow) and then dry out and die, bulb size and quality are ‌also reduced.

Other Onion & Garlic


Bacterial Leaf Blight

Bacterial Leaf Blight

Onion leaf blight

Onion leaf blight

Neck and bulb rot of onion

Neck and bulb rot of onion

White rot

White rot