Nugroho, Kusumo; Balai Besar Litbang Sumberdaya Lahan Pertanian, Jl. Tentara Pelajar No. 12,
Bogor 16114; Wahyunto, Wahyunto; Balai Besar Litbang Sumberdaya Lahan Pertanian, Jl. Tentara Pelajar No. 12,
Bogor 16114 (Indonesian Center for Agriculture Land Resource Development, 2015-07-05)