hyroot
Well-Known Member
castings are used to give living microorganisms to your soil not necessarily nutrients. I don't know that soil testing would do much.
If you feed your worms amendments, grains, and veggie scraps. They will be full of readily available nutrients. Most commercial castings, worms are only fed cardboard and the castings have low nutrient value if any. Thats partly why with no till if you use quality castings you don't need to reamend every round.