Febriana W, Gusmini, Yulistriani. Improvement Of Ex-Gold Mining Soil Through The Application Of Rubber Leaf Litter Compost And Biochar Of Oil Palm Empty Fruit Bunches On The Growth Of Rubber Seedlings (Hevea Brasiliensis Muell. Arg.) Pb-260 Clone. JRP [Internet]. 2023 Mar. 14 [cited 2024 May 21];4(1):53-64. Available from: http://jrp.faperta.unand.ac.id/index.php/jrp/article/view/59