5
Because EC readings are affected by moisture
content, it is important that soil moisture content
does not differ significantly between readings. An
easy way to achieve this condition is by taking
measurements approximately 30 to 60 minutes after
an irrigation. This should ensure the soil moisture
level has approximately reached field capacity.
The probe should be inserted in the root zone. The
measurement region is at the tip of the probe. For
turf, the root zone is approximately 2” - 4”. For
vegetables and small plants, this is about 8” - 12”.
Wait until the meter reading stabilizes before
withdrawing the probe. Taking several
measurements will allow a representative average to
be computed.
Important: Do not touch the sensor tip with your
fingers. The oils on the skin will affect the
probe’s measurement accuracy.