Looks like I need to let the dandelions go to seed, with a seed bag over them, then go scatter those seeds all over the pasture!
I couldn't find the link I was looking for. I came across a map, and you clicked on your state, then your county, and it told you... according to the university studies what the soil is normally deficient or rich in mineral-wise. I was going to post the link, so folks could see what their soil basically has, before they begin amending it.
Copper deficiency leads to many diseases in animals and humans.
If your soil is deficient, and you are not amending the copper, it could be that your wonderful vegetables would be deficient in them too.
Think of Tomato End Rot... calcium deficiency.
Some weeds will help in some of this, and hay might or might not have those weeds in it. I am researching herbs to add both to the mulch, and the pasture.
So much to learn! But, while we learn, we apply what we do know, and our food supply gets better with each new piece of the puzzle.
Many years ago, when we first started a garden in the forest, and I mean many years ago. We double dug the beds. Then we added a layer of leaves, a layer of rabbit manure, and then soil, and kept layering it. Well, the layers were too big, and we did this the same day we planted it. The plants took off, looked great. Then their roots left the soil area and hit the too rich area, yuck sick, then they hit the leaves, which tended to allow too much airflow and the plants were dry! How tight was your hay?
In a bale that is not opened, they are squeezed tight, and if you grow in it, you find it doesn't dry your plants, like hay that is loosely tossed into a cage would do. You want the hay fluffy when it is on top, to allow air in. But the hay should be tight when on bottom to limit airflow and hold water.