Phosphite is an inorganic compound. It is of the phosphorus family however cannot be used as a nutrient, at least by plant cells.
Definition
ChEBI: Phosphite(3-) is a trivalent inorganic anion obtained by removal of all three protons from phosphorous acid. It is a trivalent inorganic anion and a phosphite ion. It is a conjugate base of a hydrogenphosphite.
