Improvement of Soil Chemical Properties of Typic Hapludult After Application of Organic and Inorganic Fertilizers - Mubarok, Syariful; Department of Agronomy, Faculty of Agriculture, Universitas Padjadjaran Jl. Raya Bandung – Sumedang, Km. 21 Jatinangor Sumedang, Indonesia (UNIVERSITY OF LAMPUNG, 2017)