Sensors and probes can be used but these working well really depends on matching them to the crop root depth, and this isn’t an easy task. Measuring root depth precisely isn’t possible and a futile task as they are dynamic, changing depth throughout the growth cycle meaning constant adjustment is required. Moreover, soil moisture changes from one area to the next, so plants only meters away from each other could be in very different soil moistures. This adds the additional challenge of placing your tensiometer in the correct place; but this is another impossible task as it will never be accurate to each individual crop in the field. This will lead to generalization of moisture requirements, meaning some plants will be over irrigated and some under irrigated within the same field. 

Our solutions compensate for all these issues. Instead of assuming uniform conditions, we can identify where water use is higher or lower and adjust irrigation with confidence, targeting water where it is needed and avoiding waste where it is not. SEBAL takes advantage of biological links, ensuring the measurements are accurate to the processes actually happening within your crops, and the satellites ensure real time data anywhere on the globe.
Our solution is also an improvement on standard methods as crop temperature allows us to detect plant stress at least 7 to 10 days in advance of damage, in good time to take the appropriate measures. Plant stress can affect production, and waiting until the impact is evident on the ground or other satellite bands, like visible or near-infrared, would be too late to recover.