Question: query regarding control of ants in betelvine plants. 
Answer: spray furadon 2 gram/liter of water or actara 3 gram/liter of water 2 times at 5 days interval in the evening time. after that mix any one of above mention insecticise with soil around the plant. after complition of this doses continue neem oil or neemycin  5 ml per liter of water once in a week.