

Early blight can cause severe damage to tomatoes and symptoms can be on any of the above ground parts of the plant including leaves, stem and fruits.

The lesion start with small yellow sections on the leaf that starts to turn brown, and this is especially noticed in leaves that are close to the ground.

Advanced symptom includes oval shaped lesions with a yellow chlorotic region around the lesion. The lesions may or may not have concentric rings.

At later stages early blight causes severe yellowing and blights of the leaves leading exposing the fruits to sunsclading and reduced yield.

Concentric lesions on the stem is a characteristic symptom for early blight. The center of lesions also tend to crack as the lesion ages.
EARLY BLIGHT
Fungal causal agent: Alternaria solani
Tomato diseases