Plant nutrients are the chemical elements that are essential to the nourishment of plant health. Plant nutrients fall into three categories, all of which are based on the amount a plant needs, not the importance of the individual elements. Each plant nutrient performs a crucial role in plant growth and development.
Nutrients are replenished by certain different microorganism that are found in the soil or also by the death of certain plants such as the rhizobium plant. The decaying plants tend to slowly break down into the basic soil nutrients over a period of time.