Kanareugsa C. Critical Concentrations of Nitrogen, Phosphorus and Potassium in Rice Plant. Agr. Nat. Resour. [internet]. 1980 Jan. 1 [cited 2026 Sep. 17];14(1):69-80. available from: https://li01.tci-thaijo.org/index.php/anres/article/view/240832