The #MLSN method for nutrient recommendations involves an MLSN value that the soil is not supposed to drop below. But what does this value mean, when converted from the usual units of ppm (mg/kg) to how many years it would take grass to use that much of the element? 

• The blog post discussed is https://www.asianturfgrass.com/post/soil-nutrients-and-extra-beer/
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