Is anybody acquainted with this technology?
I've got a lot of big, older trees in my yard that shed limbs like crazy, especially in the winter months. It would be great to be able to use them on the soil (or the garden I'm planning on starting in the spring) instead od sending them to a landfill.
I remember reading about this when I was first thinking about gardening. OMG! It's been decades when I first read about this! It's a great idea if your soil is acidic. Increasing soil ph above 7 will cause nutrients such as phosphorus, iron, boron, manganese, copper, zinc and potassium to become chemically tied to the soil and less available for plant use. I would take small soil samples from various spots where you're planning to start a garden & have it tested before using wood ashes as a soil amendment.
I have a problem common to arid climates, alkaline soil. By the time the Colorado River reaches southern California many dissolved salts have accumulated, making our water very hard, which increases the alkalinity of my soil. Many sugar pines were planted in our housing track which shed heavily just when our weather starts to turn hot. I sweep up their abundant pine needles from the streets to use a free garden mulch. The neighbors think I'm nuts. But hey... it's free! My garden soil benefits from the increased acidity of the needles.
If using wood ashes will benefit your soil, please post pictures. It'd be great to show by your example, how individuals can sequester carbon at home.