Question: query regarding management of red palm weevil in coconut plants. 
Answer: please spray carbaryl 5 gram per liter of water throughly in the affected plant parts 3 times at 5 days interval  in the evening time in the absence of rain. plastered the affeted parts with bordeaux paste(100 gram tutia in 500ml water and 100 gram lime in 500ml water) followed by application of bordeaux mixture (100 gram tutia in 5l water and 100 gram lime in 5 liter water).