Affiliation: Sebelas Maret University of Surakarta, Graduate School, Doctoral Program of Agricultural Science, Surakarta, INDONESIA; Universitas Pembangunan Nasional Veteran Yogyakarta, Faculty of Agriculture, Department of Soil Science, Yogyakarta, INDONESIA
E-mail: ekoamiadji@yahoo.com

Mapping Indigenous Nutrient Status of Post-Eruption Soil to Support the Fertilization of Rice (Oryza sativa) in the Southern Area of Merapi Mountain, Indonesia