Rohan Wijekoon2020-04-112020-04-112001Annals of the Sri Lanka Department of Agriculture, 3:p.315-332https://dl-doa.nsf.gov.lk/handle/1/1978PLANT PROTECTIONParthenium hysterophorusInvasive-weedParthenium media campaign:a study of effectiveness of different media/extension strategiesArticle