Idjudin, Abdullah Abas; Balai Penelitian Tanah, Jl. Tentara Pelajar No. 12, Cimanggu, Bogor 16114; Erfandi, Mas Dedy; Balai Penelitian Tanah, Jl. Tentara Pelajar No. 12, Cimanggu, Bogor 16114; Sutono, Sutono; Balai Penelitian Tanah, Jl. Tentara Pelajar No. 12, Cimanggu, Bogor 16114 (Indonesian Center for Agriculture Land Resource Development, 2012-07-05)