Activity of Soil Microorganisms During the Growth of Sweet Corn (Zea Mays Saccharata Sturt) in the Second Planting Time with the Application of Fertilizers and Biochar. j Trop. Soils [Internet]. 2017 Jan. 2 [cited 2025 Dec. 26];22(1):37-45. Available from: https://journal.unila.ac.id/index.php/tropicalsoil/article/view/36