“…As discussed previously, excessively high rates of P, K, S, Zn, Mn, or Cu fertilizers can also induce Fe deficiency (Astolfi et al, 2003(Astolfi et al, , 2004Brown and Tiffin, 1962;Chen and Barak, 1982;Cumbus et al, 1977;DeKock et al, 1979;Haleem et al, 1992;Hughes et al, 1990;Kadar and Elek, 1999;Lindsay, 1984;Marschner, 1986a;Miller et al, 1990;Roomizadeh and Karimian, 1996;Singh et al, 1996;Szlek et al, 1990;Uvalle-Bueno and Romero, 1988).…”