Nguyễn, T.T.D., Nguyen, T.C., Nguyen, H.T., Pham, V.N. and Dao, V.C. 2025. RESEARCH ON THE EFFECT OF HARVEST TIME AND PRESERVATION METHODS ON THE QUALITY OF MEDICINAL HERBS OF Crinum asiaticum L. Hong Duc University Journal of Science – Agricultural, Forestry and Fishery Science. 72, 4 (Apr. 2025), 33-41. DOI:https://doi.org/10.70117/hdujs.71.4.2025.564.