Liyanage, A. De S.Peries, D.S.Sebastian, R.D.2013-05-082013-05-081971Journal of the Rubber Research Institute of Sri Lanka48(1-2)pp.112-124https://dl-rri.nsf.gov.lk/handle/1/1570Assessment of the incidence of Oidium leaf fall and economics of its control in the smallholdingsA