De Silva, R.L.Wettasinghe, D.T.Calnaido, D.2015-06-192015-06-191972Tea Quarterly43(3)pp.62-84https://dl-tri.nsf.gov.lk/handle/1/214AgricultureTea productionNorth-East IndiaDarjeeling districtPestPlant diseasesFertilizerResearch and DevelopmentAssamArticle