Nitrogen is an essential nutrient for plant growth, development and reproduction.

Despite nitrogen being one of the most abundant elements on earth, nitrogen deficiency is probably the most common nutritional problem affecting the growth of plants worldwide.

Nitrogen is vital because it is a major component of chlorophyll, the compound by which plants use sunlight energy to produce sugars from water and carbon dioxide. It is a major component of amino acids, energy-transfer compounds and nucleic acids such as DNA, the genetic material that allows cells to grow and reproduce.