An automated system for rapid in-field soil nutrient testing
作者： A. McBratney , R. J. Gilkes , N. Prakongkep , C. Lobsey , R. V. Rossel
DOI:
关键词: Field soil 、 Soil nutrients 、 Process engineering 、 Environmental chemistry 、 Nitrate 、 Precision agriculture 、 Calibration 、 Chemistry 、 Soil test 、 Nutrient 、 Ion exchange
摘要: This paper outlines the laboratory experimentation and development of a multi-ion measuring system (MIMS) for proximal sensing soil nitrate, potassium sodium using Ion Selective Electrodes (ISEs). We present work conducted characterising ion exchange reactions multiple ISEs universal extracting solution. The use kinetics prediction models rapid estimation extractable nutrient concentration was evaluated. Using these techniques prototype field portable MIMS developed to provide in-field analysis in less than 30 seconds. automates measurement process including ISE calibration, temperature compensation, with estimation. Finally we describe hardware performance under conditions.
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