Hakim N, . A, Mala Y. Application of Organic Fertilizer Tithonia Plus to Control Iron Toxicity and Reduce Commercial Fertilizer Application on New Paddy Field. j Trop. Soils [Internet]. 2012Nov.19 [cited 2025Aug.1];17(2):135-42. Available from: https://journal.unila.ac.id/index.php/tropicalsoil/article/view/144