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Windsor, Ontario, Canada

I never really thought about this before, I just assumed. When I have been calculating the ratios, I have been using the measured ppm. Is that right? Am I supposed to use the base saturations instead?

Thanks

12/14/2007 11:06:25 AM

use the PPM to calculate the ratios

12/14/2007 10:29:35 PM

Windsor, Ontario, Canada

I thought so, just wanted to confirm. Thanks.

12/15/2007 8:24:36 AM

Windsor, Ontario, Canada

The reason I ask is I have received a soil test from a grower, and it seems that for the K/Mg ratio, the lab used the saturations.

OM 7.1
P Bicarb 58
P Bray 177
K 386
Mg 335
Ca 2360
Na 30
pH 7.3
CEC 15.7
Al 251

%K 6.3
%Mg 7.8
%Ca 75.1
%Na 0.8

K/Mg Ratio 0.35 (6.3/7.8) not 386/335....

Interesting.

12/15/2007 8:33:43 AM