from 2.0 to 8.3 dS m−1. Linear regressions for EM38H and EM38V ECa
measurements with ECe are presented (for individual depth intervals
and averaged across more than one depth interval) in Table 1.
EM38H and EM38V were similar in their ability to predict ECe for
depth intervals to 60–90 cm, while EM38V was a better predictor
for depth intervals 90–120 cm and below. The strongest relationships
between ECa and ECe were observed at the 90–120 cm depth
interval. Measurements of EM38H and EM38V were highly correlated
and the relationships were not improved by combining both
EM38H and EM38V.