Nitrex is an organic-based, biologically enhanced, highly soluble source of mineral nitrogen. Nitrogen is one of the most critical nutrients required for healthy plants. It is mainly responsible for leaf and stem growth and is also essential to the production of enzymes, chlorophyll, and amino acids. Early nitrogen deficiencies can appear as stunted growth, yellowing in the leave between the veins, purplish-red stems and pronounced veins. In later stages, nitrogen deficient plants may display entirely yellow leaves with a large amount of leaf drop. Nitrex can be used to replenish nitrogen used or lost from frequent watering. Beneficial for fruits, flowers, vegetables, trees and shrubs.