The crop is mostly attacked after the third month of planting till the harvesting is done. The caterpillars bore into the cane near the nodes hence it is called as internode borer.After entering into the cane, larva plugs the entry hole with excreta. The larvae move within the stem tissues damaging the nodes. Fresh borer attack is mostly found in the top five immature internodes. Caterpillars bore at the nodal region and enter the stem and tunnel up-wards in a characteristic spiral fashion. Entrance hole is usually plugged with excreta. Larvae feed and multiply in water shoots. One larvae found in a single cane damages 1-3 internodes. The length and girth of the infected internodes get reduced. Yield loss and juice quality deterioration occurs when the infestation is severe. Even 10% of the attack by this pest not only results in the loss of weight of the cane but it also causes deterioration in the quality of the sugar.
High dosage of nitrogen, waterlogged condition and presence of water shoots favors buildup of pest.
Trap to be used : Delta trap
Number of traps per Acre: 10-12
Life of Lure : 60 Days