9. MacIntire, W.H., S.H. Winterberg, L.J. Hardin, A.J. Sterges, and L.B. Clements. 1950. Fertilizer evaluation of sure phosphorus, phosphorous, and phosphoric supplies via pot cultures. 10. McDonald, A.E., B. Grant, and W.C. Plaxton. 2001. Phosphite (phosphorous acid): Its relevance within the surroundings and agriculture and influence on plant phosphate starvation response. Over time, phosphonate fertilizer can be transformed by micro organism to phosphate in soil, where it can be taken up and ...