Zinc deficiency in humans is a big problem, especially in developing countries, and it's linked to low zinc levels in cereal crops. To tackle this, scientists have found that adding zinc to the soil or spraying it on plants can significantly increase the zinc content in grains. This method, called agronomic biofortification, is a quick and effective way to boost zinc levels in cereals, which are a staple food for many people. By using strategies like seed priming and chelation, researchers have shown that it's possible to greatly enhance the zinc concentration in cereal grains, helping to address the issue of zinc deficiency in the developing world.