Technical Abstract: A comprehensive strategy for potato health management requires that all essential plant nutrients be available in amounts needed for optimal potato growth and development. Essential nutrients are those required for a normal life cycle and for which no other nutrient can be substituted. Sixteen nutrients are known to be essential for high plants. These function as major constituents of plant cells or are used in metabolic processes within the plant. Carbon, hydrogen, and oxygen are supplied in water and in the atmosphere. The remaining essential nutrients must be taken up by the roots of the plant from the soil solution or absorbed by the leaves from foliar sprays.