SURACHET ARAMRAK; JONGRUK CHANCHAREONSOOK; CHAIRERK SUWANNARAT; ED SAROBOL. Assessment of Multielement Extractants for Prediction of Available Potassium in Thai Soils. Agriculture and Natural Resources, Bangkok, Thailand, v. 41, n. 3, p. 461–466, 2007. Disponível em: https://li01.tci-thaijo.org/index.php/anres/article/view/244266. Acesso em: 27 aug. 2026.