Potassium and K/Mg ratio; CEU eligible, $40 fee
The big brother of the cations, potassium is one of the essentials that is directly tied to over 60 enzyme systems in plants and it is one of the nutrients most used by the plant (hence it is called a macronutrient).
K is the fuel for photosynthesis and is critical to many plant processes including the ATP production pathway. Low K levels are also known to attract leaf sucking insects. Cations should be rated on their optimum level for their soil type (called base saturation) and the ratios of cations like K to Mg (and Ca to Mg) can have a very significant impacts on the availability of other nutrients within the soil.
Improper K:Mg ratios can also have a significant impact on quality and diseases severity. This session will do a deep dive into the role of potassium in your soils.