Teguh Adiprasetyo

University of Bengkulu, Indonesia

M. Faiz Barchia

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