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Re: Nitrate levels
Plant growth (yield) is limited by the nutrient most deficient.
Limiting one, limits a plants ability to use the others. This is called
the Law of Minimum and you can read all about it here:
http://www.soils.wisc.edu/~barak/soilscience326/lawofmin.htm
and the rest of the site on nutrients can be found here:
http://www.soils.wisc.edu/~barak/soilscience326/macronut.htm
>From what I understand in the article, you don't want any of the
nutrients, mAcro or mIcro, to be limited.
And yes, 10ppm is a good number to shoot for.
Mark