EMI (electromagnetic induction) is a technique used to measure the electrical conductivity of the soil and determine the soil texture. The EMI scan identifies major soil horizons and from there we test soil zones and can produce soil maps showing percentage clay, silt and sand. These maps are invaluable for understanding the soil properties on your farm. They are used to identify variation and to target, amongst others, irrigation and seed rates.
This image is an example of the maps that can be created using the EMI scan data.