Aspiring to do sustainable* container gardening, I'd like to reuse the soil in my balcony pots each year instead of throwing it away. A fascinating idea is that watering a balcony pot with boiling water kills the evil things in it. Certainly, it doesn't kill everything. Very probably us gardeners don't even know of many of the diseases ravaging our plants.
What is the spectrum of expected harmful organisms permanently destroyed by such treatment? How often should it be done? Are there scientific articles on the subject?
* - as this avoids the damage caused by removing peat, packaging it in plastic, transporting it to the place of sale; and when discarded transporting it to a waste dump mixed with all the glass and plastics people have also discarded