Fig. 7: Conception of optimizing Zn agronomic biofortification measures in wheat grain.
From: Zinc agronomic biofortification in wheat and its drivers: a global meta-analysis
The 30 mg kg−1 is the first Zn biofortification target that close to the average Zn concentration in global wheat grains, and the 40 mg kg−1 is the final biofortification target that required for human nutrition health. The initial Zn concentration (mg kg−1) in grain is from wheat without Zn applied but other fertilizers supplied sufficiently. The Zn agronomic biofortification index is the amount of increase in Zn concentration (mg kg−1) in grain with 1 kg Zn ha−1 applied to soil or wheat foliage.
