Response of Electromagnetic Conductivity Meter to Soil Salinity and Soil-Water Content

Abstract

The effect of soil salinity and soil-water content on the apparent soil electrical conductivity as measured with the EM-38 electromagnetic conductivity meter has been investigated. Results showed substantial changes in the meter's readings as soil-water content changed. The higher the soil salinity, the more sensitive the meter's readings were to changes in soil-water content. A linear relationship existed between soil-water content and apparent electrical conductivity for each level of soil salinity over the range of measured soil-water contents.