Now, before we whack that beehive wide open, know that there are two distinct growing systems. One is a system of life that is never broken by chemicals or iron. The other is one that is regularly broken with chemicals or iron. Both have sets of knowledge that are true, but they are not interchangeable. In an unbroken system, very few additives are needed, and most will only do damage. In a broken system, significant additives are needed to keep plants alive and keep weeds at bay.
I operate in the unbroken bubble. I give little consideration to soil tests, only because they show a snapshot of what is available at that moment, but they can't show system capability to process and deliver bound up nutrients. For example, if I need 150lbs of potassium to make my desired crop, and I've got 150 days to grow it, and I'm only showing 1 pound of potassium, I'd say I have plenty for the whole season, because I know my system can free up 1 lb/day (better on warm and moist days) all season long. In a broken system, 1 lb/ac of potassium is a recipe for failure.
Here's a great watch from the guys at Green Cover. They interview a dude that's been studying biological (unbroken) systems for decades. I can't recall if it was 20 years or 30 years in this video, but they ran perennial polycultures in an unbroken system for decades and never applied a pound of potassium. Conventional wisdom would say we're mining out the nutrients. That is true in a broken system. That is not true in an unbroken system. After those decades, the soil tested for MORE potassium than when they started some decades earlier.
Start at 23:38 for the potassium part of the video. The dude's a tad hard to follow, but the slides are excellent.