Most of the cultivable soil being alkaline in nature contains less available phosphorus. Due to higher concentration of Calcium, whenever phosphatic fertilizers are applied in such soil, the large quantity of it gets fixed as Tri-Calcium Phosphate as it is water insoluble and hence becomes unavailable to the crop. Certain soil microorganisms have inherent capacity to dissolve part of the fixed phosphorus and make it available to the crop by secreting certain organic acids.

Most of the cultivable soil being alkaline in nature contains less available phosphorus. Due to higher concentration of Calcium, whenever phosphatic fertilizers are applied in such soil, the large quantity of it gets fixed as Tri-Calcium Phosphate as it is water insoluble and hence becomes unavailable to the crop. Certain soil microorganisms have inherent capacity to dissolve part of the fixed phosphorus and make it available to the crop by secreting certain organic acids.