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Rivka
wrote:
"c) during just
about all of the evolutionary history of these plants humans were not applying P
annually to supply them:
therefore, it's got to be made available by some process not involving human intervention." That may be
true, but evolution typically produces very low yields with the exclusive
goal of survival of individual species. The yields nowadays of
many crops remove far more P than can be supplied without the aid of human
intervention.
Mark
KS
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