Phosphate is critically needed by plants, trees, and vegetable crops during blossom and fruit production to produce blossoms and fruit. Phosphorus is an essential element for all plant life. It makes up an important part of plant genes and is essential for molecules that carry genetic information. P is needed for plant respiration. P is needed for energy storage and transfer.
P is needed for cell division.
P is needed for cell enlargement. P is needed for several other plant processes. The highest level of P in young plants is found in tissue, at the growing stage. As plants mature most of the P moves into the flower and the seed or fruit.