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GRDC_FS_Soil testing for crop nutrition S_low res pdf
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KEY poiNtS A range of soil test values used to determine if a nutrient is deficient or adequate is termed a critical range... for Crop growth The critical value indicates if nutrient supply Crop growth not limited by nitrogen and sulfur, which are highly mobile is likely to result in a crop yield response limited by deficiency deficiency in the soil, 0 to 60cm is recommended... KCl-40 S soil tests taken from deeper sampling provide a more reliable prediction of S response in canola...
Broadacre Field Crops DAFF QLD