Rathnapala, P. P. R. P. S; Herath, H.M.B.S
(Vidyodaya Journal of Humanities and Social Sciences, Faculty of Humanities and Social Sciences, University of Sri Jayewardenepura, 2022)
Vegetables are essential food items that provide daily nutritional
requirements to maintain healthy life for human beings.
Therefore, it is necessary to maintain continuous production and
supply. The unexpected Covid-19 ...