Of the sixteen nutrients that plants need to grow, develop, reproduce and remain healthy, there are seven that we refer to as micronutrients: zinc (Zn), copper (Cu), manganese (Mn), iron (Fe), boron (B), chloride (Cl) and molybdenum (Mo).
While these nutrients are used in minute amounts, they are just as important to plant growth and development as the macronutrients and secondary nutrients, with some of them playing an important role in controlling key processes and the uptake of macros. For example, molybdenum deficiency reduces nitrogen and phosphorus uptake, while zinc deficiency can reduce overall plant vigor, growth and the uptake of other nutrients.