questions: asking about the control measure for bacterial leaf spot in betel vine.. 
 answers: advised to spray bordueax mixture in root zone and on leaf(add 100 gram copper sulphate in 5 lit water,add 100 gram lime in 5 lit water,mix both in 3 rd container for 10 lit solution).also drench the soil alternately with cristocycline @ 1 gram/5 lit water.(40 gram/200 lit water for one acre).