Andini UR, Hot Setiado, Siregar LAM. The Effect of Vernalization on the Appearance of Local Amaryllis (Hippeastrum sp.) Plants in the Land of Karo and West Sumatera. Petrop [Internet]. 1 [cited 2024Dec.22];6(1):24- 33. Available from: https://talenta.usu.ac.id/jpt/article/view/3036