"The most important property affecting desorption, according to their study, was the extent of P saturation, but the authors warned that further research was needed to test the relationship between desorbable P and P transfer into leaching and runoff." This is from the last article on the link list. It is a statement that makes sense. This is where farmers and LCOs have been acting unknowingly about their fertilizers. We have not worked with the natural order but have replaced the natural order. Ferts don't work beyond CEC, and yet we think it is the fert's problem or we need to add a little more. As a result we have an outside mined P going into a soil that is already saturated, just not according to the lab results. I still believe that there is a stable level of P in a soil that will no longer move about. Of course this is a balancing act for harvestted crops. However, making lawns a harvested crop is just nonsense.