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Tag archive: Deep P application

Why should you address more than the most limiting subsoil nutrient?

When both phosphorus (P) and potassium (K) are both low in the subsoil there’s a strategic advantage to managing these two nutrients together. Deep phosphorus (P) deficiency is more common than deep potassium (K) deficiency. It’s unusual to see low subsoil K not accompanied by low subsoil P. Without adequate […]

Latest expert advice on deep banded fertiliser

Deep banding of phosphorus (P) and potassium (K) fertilisers has shown promising yield responses in some settings, but not in others. Deep-banding trials across Queensland and New South Wales have shown that banding rarely reduces crop yield, but it doesn’t always lead to profitable yield increases. Some of the variability […]

Deep Phosphorus fertiliser trials in NSW

Deep phosphorus (P) placement to improve crop productivity is being investigated in the central west of NSW, at Gilgandra and Nyngan. Led by Dr. Mike Bell (QAAFI), the trial investigates how deep P placement affects the fertility of the subsoil, and the economic effectiveness of deep P placement. The work […]