If you would like to continue learning about water content measurements and applications, we recommend the resources below.

Soil moisture sensors—How they work. Why some are not research grade. | TDR, FDR, capacitance, resistance: A comparison of common soil moisture sensing methods, their pros and cons, and their unique applications.

The researcher’s complete guide to soil moisture | Everything you need to know about measuring soil moisture—all in one place.

Soil moisture 102: Water content methods—Demystified | Dr. Colin Campbell compares measurement theory, the pros and cons of each method, and why modern sensing is about more than just the sensor.