Mango malformation panicle bunchy compact green growth no fruit aam mite cause control
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Panicles that turn into thick, bunched, abnormal green clusters that stay compact and set little or no fruit are showing mango malformation. It is a serious disorder linked to a fungus (Fusarium) and often associated with mango bud mite, and once a tree is badly affected it tends to recur. The most likely thing to do is confirm with your KVK or horticulture officer, because vegetative malformation on shoots and floral malformation on panicles look different. Management is mainly sanitation and removal: prune out and destroy the malformed panicles and shoots well below the affected part, ideally before the fungus spreads, and do not leave the cuttings in the orchard. Do not take grafts or scions from affected trees, since the disease moves with planting material. Controlling mango bud mite with KVK-recommended measures can help reduce malformation, and some growers use a recommended hormonal spray at bud stage on local advice. There is no simple chemical cure, so set realistic expectations and rely on regular removal plus clean planting material. Please get a field diagnosis before investing in any spray programme.
We keep cutting the bunchy panicles every year well below the bad part and burning them. The tree never fully recovers but the healthy parts still give some fruit. Never take scion wood from such trees.