Something that can help significantly with Obtaining a Yield and offering a stellar ROI - is Microbes.
I didn't notice a topic listed for microbes in the forums. Maybe this is something that could be added? Another one could be "sociobiome", which is a term I became familiar with after listening and watching some of Dr. Christine Jones presentations.
Two regenerative ag leaders, John Kempf and Dan Kittredge, have both stated that - by far - the thing that brings them the biggest ROI - the greatest gain for the least investment - is biological inoculants.
Plants that are rich with endophytic microbe interactions have greater phenotypic expressions, and enable more rapid genetic changes within fewer generations. Plus they grow faster.
So how can we, as permies, go about making these connections in our gardens without having to be dependent on store bought products?
There are a few methods that I am aware of.
One of the simplest has been shared by Dan Kittredge in his fantastic presentation at Living Web Farms. This is the first video, out of quite a few in a series, available for free.
If you don't have the time to watch - here are the basics: Go out into your environment with a
bucket and hit as many microclimates as possible. Dry, wet, forest, meadow, etc. Look for the healthiest plants, dig up a handful of soil from the base, and add to your bucket. The soil in your bucket can be mixed with water, and that water can be used to soak seed and plant
roots, or even as soil drenches, which introduces a wide range of microbes from a wide range of microclimates found in your area.
Dr. James White and John Kempf had a conversation recently about how Native Americans would do something similar with growing corn. They would go out and find certain grasses and other plants, dig them up by the roots, and shake off the soil from them, which would then be introduced to the next batch of seeds. The discussion can be found in Johns latest podcast. I went ahead and shared about it in a separate
thread.
https://permies.com/t/237747/Latest-John-Kempf-Podcast-Plant#2199598
A separate method that is considered highly effective is to create your own "IMO" pile (Indigenous Micro-Organism). This comes from Korean Natural Farming techniques, which are definitely worth learning about in my own opinion. Here is a free PDF that explains in detail:
https://www.ctahr.hawaii.edu/oc/freepubs/pdf/SA-19.pdf
Another method coming from Korea is found with JADAM Organic Farming Techniques. They call it "JMS" (JADAM Micro-Organism Solution). It is a simple method of gathering the microbes from your environment in a similar way described above, but replicating them even more in a liquid solution mixed with a small amount of sea salt/water, and cooked potato (or starch).
Image source:https://www.researchgate.net/figure/The-role-of-endophytic-bacteria-in-induced-salt-tolerance-by-plants-Endophytic-bacteria_fig3_329042607