Help on garden. I rotate my crops every year and I’m running out of ways to rotate it. Short of allowing my garden to lie fallow, any recommendations on what I can do? I don’t want to use fertilizer, but I want to improve my yields.
I also use a good weed barrier but it needs replacing.

And there's no way to increase yields and have strong, vigorous plants without SOME fertilizing. Can you at least add compost to your beds/garden area? Is it a matter of cost? If so, there are lots of homemade fertilizers you can make from everyday foodstuffs you might be throwing away:
https://constantdelights.com/post/homemade-fertilizer
https://www.thespruce.com/make-your-own-fertilizer-1388159
Hot links:
https://constantdelights.com/post/homemade-fertilizer
https://www.thespruce.com/make-your-own-fertilizer-1388159