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Phosphorus Management Northern Region Fact Sheet

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Applying P at depth (15 to 20cm deep on 50cm bands) can improve yields over a number of cropping seasons (if other nutrients are not limiting)... Limited P is now constraining yields in parts of the northern grains region, particularly in the vertosols (black and grey cracking clays)... The test needs to be done only every four to six years, and is most important in the subsoil layers...
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