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Urea Volatilisation: Why Surface-Applied Nitrogen Disappears
Urea is the most concentrated solid nitrogen fertiliser available at 46% N, which makes it the cheapest way to move nitrogen per tonne. It also has a failure mode that costs growers real yield every season. What happens…
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Reading an NPK Ratio: Matching Fertiliser to Your Soil Test
The three numbers on a fertiliser bag are percentages by weight of nitrogen, phosphorus (as P2O5) and potassium (as K2O). A 20-10-10 blend is 20% nitrogen, 10% phosphorus and 10% potassium; the remaining 60% is carrier, sulphur, trace…