Hunter Industries Soil-Clik SC PROBE Owners Manual Page: 5

Place in the Root Zone
In turf applications, the probe should be placed in the root
zone, approximately 6" (15 cm) deep. Adjust if necessary
for actual turf conditions.
For shrubs or trees, select a deeper depth that matches
the root zone. For new plantings, choose a spot halfway
down the root ball, adjacent to native soil. Be sure to
adjust for actual site conditions.