Interesting topics on Controlled Release Fertilizers and Garlic Zinc deficiency in plants: 8 surprising facts and ways of coping. Although Zinc in considered to be a Microelement, its role is crucial in plants and has very important impact on humans as well. 1.Zinc deficiency effects both plant yield and human health. With more than 9 billion people expected to populate… Zinc deficiency in plants: 8 surprising facts and ways of coping. Although Zinc in considered to be a Microelement, its role is crucial in plants and has very important impact…