I finished one, however, I'm just starting another more detailed component test.
the break down of the available PO4, NO3, NH4 fractions as well as CEC, OM, Fe for ADA AS and powersand.
It's quite different than the growth rates over 8 weeks of Eurasian milfoil.
Few folks grow that, but it's a good model weed to use if you had to pick one.
It will be sometime later next month when I get that back.
I'm measuring the Yolo loam along with delta clay's, all class 1 Agricultural Soils.
This will answer what is in the ADA AS precisely.
I already did this for the ADA liquid ferts BTW.
Regards,
Tom Barr
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