What are soil analysis extraction methods and why is it needed?

The extraction method is the analytical procedure used to determine the level of a certain nutrient in the soil.

Extraction method and unit are required to interpret and classify the added nutrient values. If your originally selected extraction method for a certain nutrient is currently not available in Atfarm, you will be informed with a red marked hint in the analysis page. Then please choose another extraction method.

These are common extraction methods:

We may add more methods and interpretation calculations in the future.

If you do not know the extraction method or unit, please contact your lab provider.