Anthracnose
Colletotrichum gleosporioides
| Symptoms | Cause | Comments | Management |
| Small and dark spot on flowers, Sunken lesions on fruit, fruits dropping from tree before ripe | Fungus | Disease favoured by wet conditions | Appropriate fungicide should be applied during flowering and fruit development |
Powdery mildew
Odium Magniferae
| Symptoms | Cause | Comments | Management |
| Gray/White powdery growth on leaves, flowers or fruits | Fungus | Found in all mango growing regions | Appropriate fungicide recommended, chemical sprays only need to be applied at flowering and fruit set |
Algal leaf spot
Cephaleuros Virescens
| Symptoms | Cause | Comments | Management |
| Rusty spots ( Orange color ) on both upper and lower leaf surfaces which may coalesce to form large irregularly shaped patches | Alage | Disease affects many fruits in the tropics, infection is unsightly but often harmless | Remove all weeds around the tree, proper pruning is required, badly infested tree can be treated with copper containing fungicides |
Pink disease
Erythricium salmonicolor
| Symptoms | Cause | Comments | Management |
| White threads at forks of branches which coalesce to form a pink crust during wet conditions | Fungus | Pink disease is a destructive disease of mango grown in the wet tropics | Appropriate fungicide recommended |
Bacterial Black Spot ( Bacterial Canker )
Xanthomonas campestris
| Symptoms | Cause | Comments | Management |
| Black cankerous lesions on stems which crack and exude a gummy substance, fruit dropping from plants | Bacterium | This is found in most tropical and subtropical areas where mango is grown | Prune out infected twigs, protective sprays of copper during wet weather helps to protect plant from the disease |
Mango Tree Borer
Batocera rufomaculata
| Symptoms | Cause | Comments | Management |
| Circular holes in the bark, tree borers feed on the barke of twigs and chew green growing tips | Insect | Female tree borers lay their eggs in incision made in damaged mango bark, larvae feed on wood and pupate within the tree | Appropriate Insecticide recommended. |
See also :
Pests and Disease Management in Mango
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