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wa cropping soil

Catalogue: GRDC Updates (West)
The effect of high yields on soil phosphorous (P), potassium (K), and sulphur (S) is small compared to the effect on soil nitrogen (N)... At least 30% of samples were low in K (< 60 mg/kg) from the shires of Chapman Valley, Greenough, Irwin, Mingenew, Three Springs, Wongan Ballidu, Cunderdin, Brookton, Pingelly, Gnowangerup and eastern parts of Cunderdin... Smart fertiliser decisions will be based on what nutrients are measured in the soil and profitable fertiliser returns depend upon the adequate supply of all plant essential nutrients...
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