Response from USDA !
Posted by:
fresh
()
Date: November 24, 2015 12:41AM The nutrient calculators all depend upon the accuracy of the sampling and the variation impacts the results.
The below link is an example given to me by the USDA - there is a statistical option report in the search program. look at the min max and standard error What we can see is that for many nutrients the max is double the min and the nutrient calculators use the average. So it's possible that for those of us choosing high quality and/or organic the nutrient levels could be 150% + what we get when using something like cron, thereby making the rda even easier to exceed. [ndb.nal.usda.gov] Sorry, only registered users may post in this forum.
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