Jackfruit pests diseases fruit borer rhizopus fruit rot bark borer management sanitation India orchard
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The common problems in jackfruit are fruit borer, bark or trunk borers, mealybugs and scale, and fruit rots such as soft rot that attack flowers and developing fruit especially in humid wet weather. The first line of defence is sanitation and good orchard hygiene: remove and destroy fallen and rotten fruit, prune to keep the canopy open and airy, and avoid injuries that let borers in. For fruit rot, improving air movement, avoiding excess moisture around fruit and timely harvest help a lot. Fruit bagging on quality fruit can reduce borer and rot damage and give cleaner produce. If chemical control is needed, use only products labelled for the pest, follow the dose and the pre harvest interval strictly, and get the current recommendation from your KVK or horticulture officer rather than spraying blindly, since residue and safety matter on an edible fruit. Confirm the right schedule locally before any spray.
Picking up and destroying the rotten drops made the biggest difference for us against borer. In the heavy monsoon the soft rot on flowers is the real headache, keeping the canopy open helps the bunches dry faster.