After destroying part of the fruit, they bore into the tender shoots and buds. Control includes destroying affected shoots and fruits and spraying with insecticide. Two species of fruit flies, Dacus umbrosus and Dacus dorsata , attack jackfruit which becomes rotten. Control is by destroying infected fruits and bagging young fruits. A common disease of jackfruit is bacterial shoot die-back caused by Erwinia Carotovora Var.
Control is to get rid of all affected branches.
Immature jackfruit are pale green and become greenish yellow and then brownish as they mature. Ripeness can also be recognised by the pungent adour. The fruit is cut from the tree by a knife or scateur. For the first three to five years there is a yield of 3 to 6 tonnes per hectare and from the sixth year onwards 8 to 19 tonnes per hectare. According To Type of Fruits.