Effect of humic acid (HA) in some physiological characteristics and fruit quality of Plum Varieties (Prunus salicina L.). Journal of Hama University , [S. l.], v. 1, n. 6, 2019. Disponível em: https://journal.hama-univ.edu.sy/huj/article/view/108. Acesso em: 6 jun. 2026.