Phosphorus (P) is commonly one of the most limiting nutrients to pasture production in New South Wales.
Before addressing soil phosphorus levels under pastures it is important to gain a better understanding of the phosphorus cycle operating in our soils supporting pasture which is grazed by livestock.
In the soil there are a number of different phosphorus pools constantly interacting. These pools include:
This Primefact describes the chemistry and pathways of each of these phosphorus pools and the principles of fertilising with phosphorus.