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| I would cut the P out first, then the S, then the K, and last the N if I were in an act of desperation. Talking corn of course.
For Beans, I would cut P, then S, and very, very last K.
I have seen a few guys go to the soil bank with what I would consider to be reasonable success. Most of these cases were situations where the fertility was already pretty good. pH would be key in these an most all situations anyway.
Agro 101 teaches that crops respond better to fertilizer applications when the soil tests levels are low (or deficient).
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P and K, going without
