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Question about Soil Test
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May 14, 2020
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lubadub
Tomatovillian™
Join Date: Feb 2006
Location: PA
Posts: 169
The Albrecht Formula is not accepted mostly by agonomists at land grant colleges and growers who have little interest in growing organically. The formula for converting PPA and ppm is 1 ppm equals 2 PPA.
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