The best?! Really?! I see several things that dont make sense. 1) The link doesnt back the assertion that compost tea would help at all with P availability or uptake. 2) Inorganic P is NOT easily leachable. It has been well established that inorganic P is rather immobile in most soils under most conditions. 3) P is almost immediately fixed or immobilized when it is applied (insoluble Fe/Al phosphates or oxide adsorption to clays; Ca phosphates in alkaline soils) and can only be made plant available via chemical changes, NOT biological changes P cycling is a complex process. However, the ground rules for the cycling are somewhat simple. All soils will naturally contain the microbes to mineralize organic P. These microbes are most efficient when healthy plants are grown. Addition of compost tea does not improve the efficiency of these microbes. It also doesnt change the chemistry of the soil, which is responsible for the relative immobility or insolubility of soil P. This description is woefully misinformed and incomplete.