Mangos are a delicious but vulnerable crop often menaced by fugal diseases like anthracnose and powdery mildew. Anthracnose causes black patches of fungus to appear on many different tissues of the plant, including flowers, leaves, and fruit, and is a voracious pathogen. Powdery mildew is a white, dust/powder-textured fungus, while mango scab covers the tree in corky brown patches akin to scar tissue in animals. Fungicides are crucial for controlling diseases like these, and sulfur compounds can help restrict mildew. Pruning may also be useful in some, but not all, cases too.
- Mango trees are vulnerable to a number of different diseases.
- Anthracnose is the most serious disease and typically occurs in areas with high moisture.
- Verticillium targets a tree’s vascular system and roots, preventing it from absorbing water.
“Powdery mildew is another fungus that afflicts leaves, flowers and young fruit. Infected areas become covered with a whitish powdery mold. As leaves mature, lesions along the midribs or underside of the foliage become dark brown and greasy looking. In severe cases, the infection will destroy flowering panicles resulting in a lack of fruit set and defoliation of the tree.”