Pethiyagoda, U.Krishnapillai, S.2015-06-192015-06-191971Tea Quarterly42(1-2)pp.109-117https://dl-tri.nsf.gov.lk/handle/1/342Food Science and TechnologyTeaNutritionMineralsTea plantsCamellia sinensisStudies on the mineral nutrition of tea - 4 ammonium and nitrate as forms of nitrogen fro tea plants in sand cultureArticle