Correlation between Soil Test Phosphorus of Kaolinitic and Smectitic Soils with Phosphorus Uptake of Lowland Rice. j Trop. Soils [Internet]. 2009 Sep. 1 [cited 2025 Nov. 3];14(3):205-9. Available from: https://journal.unila.ac.id/index.php/tropicalsoil/article/view/87