I just watched your video, it was great. Do you have any concerns about mining since your not fertilizing?
I continue to monitor soil tests, I have around 3+ years of consistent soils tests on each field, and I evaluate each spring.
With that being said, I don't have fear of that as these are deer plots and there is more OM on the fields and being added by deer/other critters daily. I am not harvesting any crop off the field either. I have a mix that is feeding each other vs. monocultures. So for example - I have clovers/vetch (legumes) mixed with 4 grain types and then brassicas. This spring the radish/turnips will be decaying and stinking - the rye/clovers will be bolting! The wheat/rye/triticale/oats are all shooting different root structurers down into the soil, sequestering nutrients from varying levels of said soil. Not to mention also sequestering carbon from the atmosphere, that is being secreted through the roots as sugars into the rhizosphere. This is what will feed the mycorrhizae in the soil - this is the symbiotic relationship we are hoping to enhance and make extremely efficient!! The idea is plants/soil communicate and the plants give the fungi food and the fungi give the plants the needed nutrients - without need for synthetics. This takes time to achieve but can happen once we have hit our stride in soil health, and plant diversity!
This spring I will plant another mix - although I don't know how successful it'll be without a drill but I hope to continue to feed the soil through spring/summer diversity plants and sophisticated root structures (beans, peas, sunflowers, etc.).
I am never tilling, I will mow/spray gly/ eventually crimp (once I get a crimper) to create a thatch layer that will continue to feed microbes and simultaneously feed the continually growing crops/roots/mycorrhizae!
The problem with fertilizing, even modern fertilizers, we are not sure how much is actually even taken up by plants! I was shocked to learn this but there are several scientist who believe that up to 70% (I believe I got that correct) of synthetic fertilizers end up as run off.
All in all, I dont recommend quitting cold turkey. Even Gabe Brown talked about slowly coming off Fertilizer applications - I think it is similar to a strong antibiotic the doctor might give you. Often they slowly increase and then decrease dosage, as to not shock the body.
Hope my ramblings make some sense. Time to take a break from soil, poor a drink and enjoy the day with my wife.
AT.