Sooriyaarachchi, A.T.Perera, R.A.C.J.Herath, H.M.N.S.2022-01-122022-01-122021Volume 23https://dl-doa.nsf.gov.lk/handle/1/407137-47Economic surplus modelReturn to investmentYield advantageAn Evaluation of the Economic Impacts of Research on Hybrid Chilli Package by the Department of Agriculture