The tutorial focuses on the role of trace elements in the life of higher plants. Criteria for assessing the mobility of trace elements in the soil and their availability to plants are given. Modern ideas about forms, functions and localization of microelements and their complexes in plant organism are described. Causes and symptoms of microelement deficiency in plants are considered, as well as mechanisms of their adaptation to deficiency conditions. The main types and methods of using micro-fertilizers are indicated.