Wijewardena, J.D.H.Amarasiri, S.L.2020-09-022020-09-021993Tropical Agriculturist, 149:p.13-22https://dl-doa.nsf.gov.lk/handle/1/2660FERTILIZERSCropping sequenceMagnesiumPotassiumUpcountryVegetablesResponse of vegetable crops in a cropping sequence to K and Mg fertilizers in the upcountry intermediate zoneArticle