Affiliation: Universitas Pembangunan Nasional Veteran Yogyakarta, Faculty of Agriculture, Department of Soil Science, Yogyakarta, INDONESIA
E-mail: partoyo@upnyk.ac.id

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