Raw sodium adsorption ratio (SAR) on its own underestimates the dispersion risk of an irrigation water source by 20 to 40 percent when bicarbonate is present. Three indices are needed to read an irrigation water report properly: SAR, adjusted SAR (SAR_adj), and...
When the “magnesium fix” makes your soil worse: dispersion, dolomite, and what reps keep getting wrong There’s a recurring pattern in turf advisory work that bothers me. A super gets a soil test back showing low pH and what looks like...
The 2026 Iran war and Strait of Hormuz closure are triggering a fertiliser crisis. This is having direct impacts on Australian agriculture, horticulture, and the turf sector. This analysis covers: The fertiliser crisis timeline. Australian import reliance, urea and...
Mycorrhizae in a Bottle. Can Liquid Organic Fertilisers Really Deliver VAM to Your Golf Greens? It sounds good. But does the biology actually work that way on a putting green? While recovering from surgery recently, I spent some time going through the...
