Diseases & Management
Anthracnose
Last Updated: 13th December 2023Critical Guidelines: Affects all mango cultivars to a varying degree. Disease is linked with free water, locality, and type of cultivar and therefore outbreak may vary between areas and years. Fungus can penetrate directly into the plant tissue. On inflorescences it begins as small spots that enlarge and coalesce resulting in the death of the...
Bacterial black spot
Last Updated: 15th April 2025Critical Guidelines: It is a rain-related disease and becomes almost insignificant during periods of drought. Under normal and wet seasons it rapidly builds up again. The bacterium does not live long in the soil or in plant residues, but to persist year round in leaf and stem lesions. The bacterium is transferred mechanically through pruning,...
Blossom Blight
Last Updated: 9th December 2020Critical Guidelines: “The blacking and death’ of a plant,” caused by Fusicoccum species, starts as a wilt of the affected part of the inflorescence. Large black lesions can also appear lower down the stem. Infection peaks at 1005 blossom fall. Control: Systemic fungicides will be effective during flowering. Thereafter, the copper program protects to and extend against the...
Blossom Malformation
Last Updated: 18th August 2025Critical Guidelines: Affected flowers take on the appearance of a cauliflower. The axes of the panicles are shorter and thicker than normal. Panicles develop slower than normal while retaining their green colour although the flowers are mostly sterile and no fruit is produced. Malformed flowers stand out when the rest of the tree has already...
Powdery Mildew
Last Updated: 12th May 2026Critical Guidelines: Occurs during cool, dry weather (no rain or precipitation), but when humidity is high. Usually coincides with flowering and early fruit set. The disease attacks all plant parts that are rapidly expanding. Infection requires night/day temperatures of 10°C / 25°C and humidity between 60-90%. Spores are wind-borne and this results in the rapid...
Sunburn
Last Updated: 13th December 2023Critical Guidelines: Fruit is most susceptible to sunburn damage, especially during the hottest part of the growing season, and more specifically from the afternoon sun. Sunburn damage of maturing fruit is visually characterised as a bleaching or burning lesion of the fruit skin, especially on the exposed shoulder regions. Sunburn damage of stems and trunks...
Stem-end-cavity “Varkhart”
Last Updated: 9th December 2020Critical Guidelines: It causes a lot of fruit loss, especially in “Tommy Atkins”. Signs of the disease is grey-brown sunken area on the fruit, and at advanced stages a blackish sunken area develops that splits open. Other signs are a sunken area opposite the suture near the stem attachment. The results in premature ripening of...