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Tag archive: sulphur

A closer look at sulphur in the southern region

Critical values for sulphur (S) in the southern region may be lower than originally thought. Established critical values are 4.5 mg/kg for wheat and 7 mg/kg for canola. These values are based primarily on WA data that use the KCl-40 S test. Do these values apply in other regions? A […]

Using deep soil cores for Nitrogen, Potassium & Sulfur

Soil testing is a valuable tool for crop nutrition decision making. The standard 0 – 10cm soil test doesn’t always tell us enough about the crop availability of more mobile nutrients. Nitrogen and Sulphur, as anions (negatively charged), tend to move deeper into the profile with rainfall. On sandy acid […]