Temperature correction of soil electrical conductivity

The EC value reported by the CS650 is bulk electrical conductivity. This value is temperature dependent, changing by 2% per degree Celsius. To compensate for the effect of temperature, convert EC readings to a standard temperature, such as 25 °C using the following equation:

where EC₂₅ is the σ_bulk value at 25 °C and ECT is the σ_bulk value at soil temperature T_soil (°C).