Rintintin: my pleasure. Check ACRES magazine, MotherEarth news and Rodale farm trial website, very good information and also free!
casino: I am also a backyard organic vegetable gardener and have been adding mycorriza innoculant + compost to my soil. It's part of the regenerative organic approach I follow to try to restore soil fertility in my "farm" because frankly my soil was dead when I moved here 3 years ago. So far I can see the results with tomatoes and peppers, they do amazing.
During winter it's very important to have covercrops to give mycorrizal fungi a host root system so they stay alive and healthy for next season. The mycorriza produces glomalin that forms aggregates that will improve the soil texture over time, helps with moisture and nutrient retention. And on top of that sequesters carbon that will improve your soil too. So is a win-win.
Organic John: I like your comment of using a plot for farming and one plot for building your soil. Use covercrops that help you twice like a legume (nitrogen fixation) and a fast growing cereal then incorporate as green manure to increase your organic matter next season. My favorite legume for that is cowpeas, plenty of foliage, nice peas to eat and thrives in poor soil
