Suryono, Suryono, Suwarto Suwarto, and Ima Farohi. “Utilization of Rice Husk Ash and Bamboo Leaf for Increasing Si for Rice Production on Paddy Soil”. JOURNAL OF TROPICAL SOILS 24, no. 2 (October 28, 2019): 65–71. Accessed August 14, 2025. https://journal.unila.ac.id/index.php/tropicalsoil/article/view/369.