Strategies to replace Phosphorus Fertiliser
The following report provides essential guidance on optimising phosphorus (P) fertilizer application in agriculture, focusing on the critical need for deep P placement due to its immobility in soil and how crops access nutrients from deeper profiles. It outlines methods for identifying P-responsive sites, details a comprehensive deep P placement strategy covering product, timing, depth, and frequency, and discusses cost-effectiveness, sustainability, and alternative application methods for enhancing soil fertility and crop yield potential, particularly in grain cropping systems.
Importance of Phosphorus Placement
* Phosphorus (P) fertilizer placement requires special consideration due to its immobile behavior in soil, meaning surface applications do not readily accumulate at depth.
* An effective P fertilizer placement strategy necessitates knowing available P and phosphate reserves in both the 0-10 cm and 0-30 cm soil profiles, using tests like Colwell P, BSES P, and Total P.