Description
Measurement precision depends upon soil salinity conditions, but for normal agricultural soils measurements should be precise within two percent volumetric moisture, with a measurement repeatability of about 0.25 percent volumetric moisture
The 3m long sensor means that AQUAFLEX soil measurement provides spatial averaging over this length of cable and measures a 6-litre volume of soil around the sensor.
This is extremely important given the variability of soil (even in well prepared plots) and non-uniformity of water application etc.
Many factors affect the uniformity of soil moisture, including the uniformity of irrigation and rainfall, crop root distribution, microclimate, and soil properties.
Averaging soil moisture measurement across a broader area provides a better indication of general trends in local soil moisture.