Current exploration has shown that industry soil salinity can be inferred from four-electrode soil electrical conductivity (ECa), When the soil profile is around "subject potential" and calibration curves,… Proceed measuring the soil resistivity by moving the electrodes considerably appart from C1 at an equal length and inserting the probes deeper. https://roydawson77776.ttblogs.com/10187603/a-simple-key-for-soil-conductivity-testing-bd-unveiled