A PLANT NUTRIENT is the chemical elements that are essential to the nourishment of plant health. The nutrient may be considered essential if the life cycle of a diversity of plant species cannot be completed in the absence of the element. A plant nutrient may be considered beneficial if it does not meet the criteria of essentiality, but can be shown to benefit plant growth and development or the quality attributes of a plant or its harvested product. PLANT NUTRIENT is very effective.