This translates to how easy it is for plant roots to extract water, depending on the soil type. [Modest Maker] had to first dodge the broken-by-design capacitive sensors that are available ...

a 2022 paper by Maja Škiljo and colleagues in Sensors covers an interesting way to make use of this signal attenuation property of changing moisture levels in soil. By quantifying the exact ...

The weather-resistant sensor on the ECOWITT Soil Moisture Tester takes accurate ... You can also calibrate the unit to accommodate different soil types and ambient humidity levels.