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

This study aims to discuss a technique of digital soil mapping to recommend fertilization options based on the major indigenous soil nutrients. The southern slope of Merapi Mountain in Yogyakarta, Indonesia, was selected to conduct the research. Thirty-seven areas i ncluded in five sub-districts wer...

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Bibliographic Details
Published in:Journal of Settlements and Spatial Planning 2019-01, Vol.10 (1), p.29-38
Main Authors: JULIANTO, Eko Amiadji, SUNTORO, Suntoro, DEWI, Widyatmani Sih, PARTOYO, Partoyo
Format: Article
Language:English
Subjects:
Cultivation
Digital mapping
Fertilization
Fertilizers
Geographic information systems
Global positioning systems
GPS
Grain cultivation
Kriging interpolation
Loam soils
Mapping
Nutrient content
Nutrient status
Nutrients
Oryza sativa
Phosphorus
Phosphorus pentoxide
Potassium
Potassium chloride
Qualitative research
Rice
Sampling
Saturated soils
Saturation
Soil analysis
Soil fertility
Soil mapping
Soil nutrients
Soil sampling
Soil sciences
Soil testing
Soils
Straw
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Summary:This study aims to discuss a technique of digital soil mapping to recommend fertilization options based on the major indigenous soil nutrients. The southern slope of Merapi Mountain in Yogyakarta, Indonesia, was selected to conduct the research. Thirty-seven areas i ncluded in five sub-districts were chosen as soil sampling locations based on a stratified purposive sampling technique. The boundary of each area on the map was delineated using the kriging method. The collected soil samples were analyzed for indigenous content of available phosphorus, total potassium, and soil base saturation. The soil data were used as a basis for creating maps of available phosphorus content, total potassium content, and soil base saturation. The criteria for evaluating the level of soil nutrient content and for proposing fertilizer recommendation were developed according to criteria acknowledged by the Indonesian Soil Research Centre [ ID: Pusat Penelitian Tanah (PPT)]. Results showed that the base saturation of the soil in the study area was dominantly classified as medium (41-60%) and high (60-80%). Phosphorus (P2O5) was found very highly available (>60 mg/100g of soil) and total potassium was dominantly very low (
ISSN:2069-3419
2248-2199
DOI:10.24193/JSSP.2019.1.03