I have put an article below on the home production of bioferments, biostimulants, and biofertilizers.
These products are gaining a lot of attention lately and rightly so.
Bioferments and biofertilizers provide the soil microbiome with the proper constituents for health.
Healthy soil is known to promote more growth and healthier plants. It is also known to help plants resist disease and pests.
There are other articles that can get more detailed into the how and why of these products. Suffice it to say, they do work.
They feed the soil food web which in turn feeds the plants. If your soil doesn’t have it in it, the food won’t have it in it.
Chemical fertilizers do not and cannot provide the proper nutrition to plants for them to be healthy.
All of these recipes can be scaled according to your site. Everything from a few flower pots to acres of land.