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ecmn | I like a lot of what I'm seeing in this thread
A phosphorus soil test has nothing to do with available phosphorus it's basically a test of The acid chose in the lab.
It's a functions test, not an available test. It tells us how the soil behaves with that acid. It has nothing to do with availability to the plant
I always like to say your P1 Bray is a wonderful function indicator of your soil. If you have to add phosphorus to maintain your P1 your soil is not cycling nutrients. Your soil is not functioning biologically.
A soil test is great for finding a major deficiency. There's no correlation between a soil test and a crop uptake. There's some probability of a response But nothing correlating to what the plant is actually going to take up.
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Formula for converting p1 to available phosphorus?
