Samarappuli, L.Yogaratnam, N.Karunadasa, P.Mitrasena, U.Hettiarachchi, R.2013-05-082013-05-081993Journal of the Rubber Research Institute of Sri Lanka73pp.37-57https://dl-rri.nsf.gov.lk/handle/1/1670BotanySoil moisturePlant physiologyGrowth rateStomatal conductanceTranspirationOsmosisAssimilationRole of potassium on growth and water relations of rubber plantsA