Ideally, less than one-tenth and certainly no more than one-third of the fruit should develop symptoms of stem end rot by the time they are fully ripe.Ĭheck the Australian Pesticides and Veterinary Medicines Authority database for chemicals registered or approved under permit to treat this pest on the target crop in your location.Leave them untreated and store at 25☌ until they are fully ripe.Harvest 100 mature fruit at random from throughout the orchard.The severity of stem end rot can be assessed as follows:
Fruit from orchards with a history of stem end rot losses should be rejected for long-term storage. Use appropriate registered chemicals for post-harvest treatment to help to control the disease. Post-harvest controlĪvoid harvesting immature fruit. Cool fruit immediately after harvest and store in well-ventilated containers. lets see if someone with more experience can pitch in. nature decided to try that out on m banana with a couple of storms and the banana isn't that strong anymore. i would advise against peeling off layers. Remove dead branches from trees.Īvoid harvesting immature fruit. Re: Stem Rot ifit's not mushy, its probrably not rot. Prune trees to improve ventilation and spray penetration. Pre-harvest sprays of fungicides to control bacterial black spot or anthracnose may reduce the incidence of stem-end rot in fruit. Crops affectedĪs water stress during fruit development may predispose fruit to infection, manage irrigation and root rot control carefully. Fruit placed on the ground for desapping can also be infected from the bark, twig litter or the soil. These fungi are natural inhabitants on the branches of the mango tree and grow into the stem of the fruit before harvest. The rot produces dark streaking of the water-conducting tissues (this symptom distinguishes stem end rot from anthracnose). A dark brown to black rot begins at the stem end as a dark brown ring and the rot proceeds towards the other end. SymptomsĪ dark rot develops from the stem end as fruit ripen after harvest. The fungi Dothiorella dominicana, Phomopsis spp., Botryodiplodia theobromae and Lasiodiplodia theobromae cause stem end rot in mango and avocado. Anthracnose disease ( Colletotrichum gloeosporioides) may cause similar symptoms. In fruit from drier areas, stem end rot may be a more serious post-harvest disease than anthracnose in mangoes.
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