Optimum Ratio of Fresh Manure and Grain Size of Phosphate Rock Mixture in a Formulated Compost for Organomineral NP Fertilizer. j Trop. Soils [Internet]. 2012 Nov. 13 [cited 2025 Nov. 18];17(2):121-8. Available from: https://journal.unila.ac.id/index.php/tropicalsoil/article/view/142