You have learned that nitrogen, potassium, and phosphorus are all “fixed” in the soil. Compare the processes of these fixations and the benefits and constraints they each provide. Assume that you add...

You have learned that nitrogen, potassium, and phosphorus are all “fixed” in the soil. Compare the processes of these fixations and the benefits and constraints they each provide.

Assume that you add a soluble phosphate fertilizer to an Oxisol and to an Aridisol. In each case, within a few months most of the phosphorus has been changed to insoluble forms. Indicate what these forms are and the respective compounds in each soil responsible for their formation.