Samarappuli, L.2014-07-102014-07-102001Bulletin of the Rubber Research Institute of Sri Lanka, 43:p.43-45https://dl-rri.nsf.gov.lk//handle/1/2477AgricultureHevea brasiliensisFertilizer applicationSeed productionNitrogen manuringPotassium manuringFertilizer to fields designated for seed collection in HeveaArticle