Stem End Rot of Mango

Triệu chứng

Twigs and branches are dry causing dieback and defoliation. Leaves becomes dark colored and margins roll up. Twigs may die and fall from the tree. Cankers appear around the infection point that will later cause necrosis (darkening of affected plant part) and dieback of the wood. Branches may also exude gum droplets that later can cover most of the branch. Fruit rot is mostly observed postharvest and begins at the stem end. The affected part becomes grey at first and later turns black. Under severe infestation the fruit can become completely rotton and mummified. The fruit flesh also becomes discolored. In fruits, the pedicarp darkens near the base of the pedicel. The affected area enlarges to form a circular, black patch which extends rapidly under humid temperature and turns the whole fruit completely black within two or three days. The pulp becomes brown and softer.