There is a company I used to rep for… Azomite. They have a product certified for the organic production of plants and animals. I sold about 2 tons a year for them, just enough to pay for what I used here on the farm. They pretty much dropped US sales except for a few large retailers to concentrate on SE Asia.
There is an ancient volcanic deposit in Utah that’s chelated, meaning ready for animal and plant use. Azomite is nothing but crushed volcanic rock that contains 80+ minerals and elements. The first year I used it was on my old garden that’s been in production since the late 1800’s. There was nothing left in that soil. Anything planted was destined to die a slow death from disease or insects.
Think of diseases and insects this way for a moment... They are just like a lion in Africa, they go after the weakest prey in the herd. If you get your animals and plants healthy enough to start... insects and disease stop being a problem. They go elsewhere.
The same thing happened to my gardens, cropland and pastures. Over the course of 8 years I put out about 10 tons of azomite, not nearly as much as I wanted but enough to make a huge difference to the soils that did receive it.
I’ve seen cattle walk through knee-deep grass to get to 3-inch grass growing in soil where azomite had been applied. I planted peas once to test deer. The deer ate the half of the patch with azomite in the soil before consuming the other half. There was an overall improvement in the health of my chickens for example. Hunters used to buy from me to treat the small patches of soil they planted for turkey and deer. They were bummed when I stopped selling for azomite.
There is another product I’ve wanted to try for a long time. Its produced by Sea Corp.
https://www.sea-crop.com/ It’s a company in Washington extracting minerals from sea water. Its in concentrated form so its much cheaper to ship long distances than an equivalent amount of azomite. I know people who have tried it to very good results.
Just a couple of ways to really bump up the mineral content of your soil in a short period of time. One I have experienced firsthand. Farmers I know personally tried the other product. For what it's worth.