Soil Calibration

Sensoterra Sensors Work in All Soil Types

Sensoterra sensors work in all soil types. However, the accuracy and precision of the soil moisture data can be improved when the soil type is known. We call this "Calibrating the data".

Calibration is needed because of soil feature variations, such as soil composition, organic matter content, and salinity. 

The Benefits of Data Calibration

Sensoterra has its own laboratory, based in Amsterdam, where soil calibration curves are currently conducted to continuously improve soil moisture accuracy.

Soil calibration curves will allow users to have a greater range of soil types covered by Sensoterra app. We work with world-leading soil research universities.

Now, available: clay, clay loam, clay loam silt, saline clay, sand, sand (Tree soil), sand (Planting soil), sand (Dunes soil 1), sand (Dunes soil 2), loam (Greenhouse soil), loamy sand, and peat. 

Feel free to contact us at [email protected] with any specific calibration requests. 

Choose the Right Soil Calibration Curve During Sensor Installation

After installing your probes, the soil type needs to be set up in the Sensoterra app. It is important to choose the most compatible soil type for your field in order to receive the most accurate soil moisture measurements. 

At the Sensoterra app, there are two options to access the calibrated data and choose the appropriate soil type:


(1) Installation of new probes: Add a new device -> Scan QR code -> Set up probes location -> Details -> Soil -> Select a soil type 

(2) Changing existent soil type settings: Probe -> Probe details -> Edit -> Soil -> Select a soil type.

The second option can also be done via Customer Portal

Data Calibration Coverage and Soil Type

All soil types covered by Sensoterra sensors are listed, with specific information on the info button. Users can choose between:

  • Sand: Contains the highest portion of sand, with low levels of silt and clay.
  • Sand (Planting soil): Planting soil is a sub-classification of sandy soil - predominantly composed of sand (>50 µm), and low levels of silt (<10%) and clay (1%).
  • Sand (Tree soil): Tree soil is a sub-classification of sandy soil - predominantly composed of sand (>50 µm), and low levels of silt (>10%) and clay (1%).
  • Sand (Dunes soil 1): Predominantly composed of sand (89%), with lower levels of silt (6%) and clay (2%).
  • Sand (Dunes soil 2): Predominantly composed of sand (93%), with lower levels of clay (<1%) and organic matter (2%).
  • Loam (Greenhouse soil): Contains 16% of clay, 35% silt, and 34% sand.
  • Loamy sand: Predominantly composed of sand (>50 µm), with varying amounts of silt and clay.
  • Clay: Contains 40% or more clay, with sand (35-45%) and silt (less than 40%).
  • Clay loam: Contains around 30-40% of clay and 20-45% sand, with lower levels of silt.
  • Clay loam silt: Predominantly composed of silt (2-50 µm), with similar levels (30-35%) of sand and clay.
  • Saline clay: Clay soils with high saline levels (chemical conditions) due to inputs application.
  • Peat: Peat basically contains organic matter and hardly any mineral particles like sand, silt and/or clay.



Sensoterra sensors have their data calibrated for the most common soil types in the market, indicated in the soil texture diagram (in blue).




Get in touch

If you specialize in data integration contact us to learn more about the opportunities with Sensoterra. 

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