I am truly impressed with BTE in the orchard. Last summer, when I planted my trees, every single hole had to be dug with a pick axe. It was a total body work out, and I did well to get 2 holes dug in a single day. I would dig for 10 - 20 minutes, and then have to go in and drink a lot, and rest for a few hours before I could go back out and dig some more. It was like breaking cement. I had squash left over that wouldn't fit in the HK. So, I decided to plant some of it in the orchard. Good sun, already mulched. And if the digging was more than I could safely do with my eye situation, I would just scratch up the surface of the cement a bit, toss down a couple of shovel fulls of compost, and snuggle the plants into that, bringing the wood chips up around to cover everything. Well, it's been less than a year, and already, BTE is doing it's job. I was able to break through and loosen the clay with a shovel and my stainless steel garden fork. So far this afternoon, I've dug up (by hand) 5 hills for squash, and about 8 hills for sorghum and dent corn. No more cement under those wood chips. Still heavy clay, but in less than a year's time (I started planting in late July) it has become more friable, and I can see where the soil is already building humus: darker in color than the unmulched clay.