Phosphorus application impaired the root AM
colonization, which correlated well with the grain Zn
concentration (Ryan and Angus 2003; Ryan et al. 2008).
Reductions in grain Zn by P applications may have
adverse impacts on human Zn nutrition in countries
where cereals are main source of daily calorie intake(Cakmak 2008). Zinc deficiency is one of the welldocumented
micronutrient deficiencies occurring in human
populations with serious health complications
(Krebs 2013).