As an example of the non-applicability of Stamet's ideas, please refer to this recent document:
...where Paul Stamets says that to get rid off the contaminating radioactivity in Japan, especially the Caesium 137 all you gotta do is to make mushrooms grow around the radioactively infested area; mushrooms will suck up the radioactivity and then you can get rid of these mushrooms.
He suggests in step 5 to cover the radioactively-infested area with mulch of 12-24 inches, or 30-60cm, using fallen trees and wood from destroyed houses. Damn, does anyone know how much mulch this is? Would that ever be a realistic project? One cannot just say "yeah, we'll cover the area with half a meter of mulch" as it is easy-peasy
He then goes on to say in step 6 deciduous and conifer trees, along with hyper-accumulating mycorrhizal mushrooms, particularly Gomphidius glutinosus, Craterellus tubaeformis, and Laccaria amethystina. Hell, how long is it going to take before this system takes off? 10? 20? 30 years till the trees and mycelia are big enough to sustain a rigorous growth of mushrooms? Most importantly, what will be the output of the system, i.e how much of the radioactivity one can get rid of in one crop? How much time AND care for these new trees is it going to take before mushrooms will be able to flourish and start accumulating the radioactivity? Note that Caesium 137 with a half life of 30 years and its high solubility in water might anyway gone in a matter of 30 years. And will the Gomphidius glutinosus, Craterellus tubaeformis, and Laccaria amethystina REALLY grow and flourish in this area? Who will be willing to be taking care of this artificial and dangerous-to-be-around ecosystem?
The rest of his suggestions are fine and logical, but overall there are no fail-safe suggestions and alternative plans in his schedule. His plan asks for the mobilization of HUGE resources and materials, and provides no proof of success. It is a good idea for the hippie dudes to say "yeah man, the shrooms will suck up the radioactivity so Mother Earth will get clean" but which practical, caring person would really go about following such plans? This latest document of Stamets preaches to the usual choir of "Mushrooms can do anything" but man, isn't it an overall unrealistic proposal the more one thinks about it? A bunch off half-thought ideas is what describes his proposal best.