Coconut Rhinoceros beetle(Kaṇṭamiruka vaṇdu) pest control methods

I found growing coconut tree to be very challenging. Hybrid coconut tree gets easily effected due to Rhinoceros beetle. With proper care and attention we can still control these pest. After lot of search on various youtube channels from different experts, i tried these methods and found to be successful. This is continuous process for next 5 years.