How important is potassium?

For a more recent perspective on potassium refer to the Minimum Levels for Sustainable Nutrition (MLSN) guidelines and this short note Potassium in the news. The information below provides some historical perspective on potassium recommendations.

PACE Turf's bottom line:

- Sample soils in the spring at the beginning of the growing season and the fall at the end of the growing season for a detailed history of soil chemical conditions. - Do not allow soil potassium to drop below 37…