I like these probes because they have given us good reliability and have been out in the Arizona heat for almost three years, with little or no trouble. The ability to make a single insertion and get distinct soil moisture profiles, i.e., 0-30 cm, 30-60 cm, etc., has given us the advantage of minimal soil disturbance while getting reliable soil moisture values.
Edward C. Martin, PhD
Professor & Extension Specialist, Dep. Ag. & Biosystems Engineering
Maricopa Agricultural Center