>> Aren't they using Daikons also for breaking up clay soil now?
Yes, that and "tillage radishes". That is the main reason I bought Daikon radishes: the thought of roots penetrating 18" into my heavy clay was exciting. I figured the radishes would need jackhammers or dynamite, and might keep me up all night with the hammering. Like Daikon fracking.
Instead the roots were only a few inches long.
