Phosphorous is involved in plant respiration,
energy storage and transfer, cell division, and enlargement.
It promotes early root formation, increases growth, and improves
the quality of fruits, vegetables, and grain. Phosphorous is
vital in seed formation and helps plants survive harsh winter
conditions and increase the rate of water absorption.
Chemical phosphate fertilizer is highly water-soluble
while organic phosphate fertilizer is not. However, due to its
high solubility, most of the phosphorous that is released is
fixed particularly in high acidic soils that are usually high
in aluminum and iron. The slow phosphorous release makes it
available over a longer period of time and plants take up the
nutrients more effectively.
The negative effect of Superphosphate and Ammonium Phosphate
is that water soluble phosphoric acid reacts with iron, aluminum,
manganese, magnesium and other components found in soil. The
insoluble phosphoric acid, ferric phosphate, aluminum phosphate,
and manganese phosphate harden and degrad soil quality and productivity.
Chemical fertilizers kill
soil microorganisms. Farms that have been using chemically treated
fertilizers often need to increase the quantity of fertilizers
used each year to maintain yields as soils conditions get worse
each year. Microorganisms are needed to allow plants to absorb
fertilizers. Organic phosphate not only adds
microorganisms in the soil (beneficial micro organisms are found
in Organophosphate) but also increases the population of microorganisms.