Walgama, R.S.Jayathileke, M.M.De Seram, C.Jayakody, J.A.A.M.Tea Research Institute; TRI, Sri Lanka2016-04-182016-04-182008Proceedings of the 217th Experiments and Extension Forum, 25th July 2008, TRI, Talawakelle, 217:p.56-67https://dl-tri.nsf.gov.lk/handle/1/1878Pest controlTea tortrixSeasonal PestHomona coffeariayield losspesticide residue