Help with insect penetrating teak tree

Hi,

I am having teak trees of  1 yr old and few almost 5 to 6 got damaged by some insect which is penetrating into tree stem and damaging. the upper portion of tree is dying after few days.

Pictures attached for your information.

Pls let me know how i can solve this problem.

Vamsi




Hai
Better to spray FAME/ CORAGEN 30 ML/200 LITS WATER SPRAY EVERY 3 MONTHS. CAN ERRADICATE STEM BORER / TIP BORER IN TEAK
    SECOND EVERY 2 MONTHS SPRAY
LIME-1 KG + SULFEX-300 GM+ MAG.SULPHATE-500 GM+ COPPER SULPHATE-200 GM/200 LITS WATER SPRAY.
THANK YOU
GOOD LUCK

i recommend clean the effected area and apply kerosine oil with cotton and then fill the hole with wet mud …and water the plant with cold water mean room temp water not freezer water for 7 days continue i would like to ask how much water u give …