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Little River, TX | A good while back we had an interesting dialog on the usefulness of base saturation ratios.
Some fellow in Australia wrote that a calcium ratio of 20% can and will result in optimal production, and the 60% to 70 % Ca is not needed.
What did catch my eye was a soil test result of 15/1 for Ca/K in ppm. With my presumed 7,000 ppm Ca that computes to 467 ppm K soil test readings. This fits reasonably using CEC 44 meq/100g times the magic 10.44 factor.
They had some other cation ratios that do not fit my local findings in probability or possibility.
Also they also restate the caveat "P & K soil test results are not the total levels but represent a portion of the total and are a representation. The amount extracted must be calibrated with field research to determine amounts of fertility at each nutrient level." Something our Texas Cow College has not attempted.
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I am probably just a slow learner, & fast to forget!
