Umar, LazuardiDefriantoRini, Ari Sulistyo2014-03-102014-03-102014-03-10wahyu sari yenihttp://repository.unri.ac.id/xmlui/handle/123456789/5824This paper presents a low cost sensor for soil moisture measurement based on impedance spectroscopy. A probe has been designed which uses a simplified impedance measuring system to determine soil water content. Methods of soil moisture measurement need extensive calibration processes because of the strong dependence on soil properties. Using impedance spectroscopy, more information can be delivered from real and imaginary part of the complex permittivity for several frequencies at the same moisture value. Agriculture area in East Sumatra is especially selected for this investigation because measurements of soil moisture in peat swamp area were generally reported as difficult.enSoil Moisture MeasurementDielectric MeasurementImpedance SpectroscopyUR-Scientific Work Lecturer