The spots enlarge as the infection goes untreated, and cause blossom blight and fruit rot. Read on to find out about diseases of mangos and how to manage mango diseases. © Copyright 2020 Hearst Communications, Inc. When Should I Copper Sulfate My Fruit Trees? Mangos are tropical and sub-tropical trees that thrive in regions with warm temperatures. Indigenous to India and Southeast Asia, trees are particularly susceptible to two diseases of mango: anthracnose and powdery mildew. Maintain a consistent and timely program for fungal application and thoroughly cover all susceptible parts of the tree. Mango tree diseases. Treating a sick mango means correctly identifying mango disease symptoms. The application of chemicals is the preferred treatment for best results at keeping the mango trees healthy and productive. The problem is usually observed in young trees planted on land previously cropped to vegetables that are also susceptible to this disease. Infection of stems can lead to bark cankers and stem thickening and death. Powdery mildew appears as a white powder on the leaves, flowers and fruit. If applied when the tree is already infected, the fungicide will have no effect. All the parts of the Mango plant, namely, trunk, branch, twig, leaf, petiole, flower, and fruit are attacked by several pathogens including fungi, bacteria, and algae. Sign up to get all the latest gardening tips! Each fungal disease of mango trees has its own unique symptoms, and treatment will only be effective to the extent that it is targeted at the specific fungal disease with which your mango tree is infected. Loucks also trains for full marathons, half-marathons and shorter distance running. The first signs of infection mimic the symptoms of anthracnose. Infected areas become covered with a whitish powdery mold. The leaves of the tree are are shiny and dark green. Mango trees are susceptible to fungal infections, especially when the weather is wet for extended periods. Symptoms of an infection are sunken black spots that are irregular in shape. They are either elliptical or lanceolate with long petioles and a … If the tree becomes infected with verticillium wilt, prune out any infected limbs. She holds a Bachelor of Science in animal science and business from University of Wisconsin-River Falls. Mango scab (Elsinoe mangiferae) is another fungal disease that attacks leaves, flowers, fruit and twigs. The disease is fostered by rainy conditions and heavy dews. However, several infectious diseases caused by many phytopathogens are deteriorating mango quality and quantity. Treating a sick mango for fungal diseases involves using a fungicide. Mangos have been cultivated in India for more than 4,000 years and reached the Americas in the 18th century. This infection looks similar to the Anthracnose fungus in the early stages, but then will form a brown tissue on the fruit and cause the leaves to become distorted. For assistance with treatment of disease, consult your local extension office for recommended control recommendations. Mango scab generally doesn’t need to be treated since an anthracnose spray program also controls scab. All susceptible parts of the tree should be thoroughly coated with the fungicide before infection occurs. In this case, mango disease symptoms present as circular greenish/grey spots that turn rust red on the leaves. As leaves mature, lesions along the midribs or underside of the foliage become dark brown and greasy looking. Spots are circular, slightly angular, elongated, 2-4 mm in diameter, brown but during rainy season, lesions differ in size, shape and colour. Some options for disease resistance include Brooks and Earlygold. 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