Originally Posted by Bunton Guy
I've had some soil tests come back with low cation exchange capacity levels. Is their a formula to find just how much organic materials need to be added to get the levels up?
What works the most effectively at getting the CEC level raised? We are dealing with red clay soils.
SOM going up will definately improve your CEC but in that type of Soil Texture you'll want to improve Soil Structure in order to make it count for something... OM sitting on top of a block of clay, doesn't do much for you...
I would research Soil Structure away from this forum, but that is the biggest issue with clay soils, especially for those who never let it dry out enough, but got to keep it wet all summer long...