Teguh Adiprasetyo
University of Bengkulu, Indonesia
Zainal Muktamar
Department of Soil Science, Faculty of Agriculture, University of Bengkulu
Yudhi Harini Bertham
University of Bengkulu, Indonesia
Suwarno
Muhammadiyah University, Purwokerto, Indonesia
Abdul Rauf
Department of Soil Science & Agroecotechnology, Universitas Sumatera Utara, Medan, Indonesia