we were talking about your permaculture workshop and discussed the materials you provided with some Fitounais gardeners few days ago and one question came up:
how do you rotate plants in permaculture? I asked you during the workshop and you said there is no need for rotation when chosen the right combination and places for plants.
The objection of the gardeners: they plant some tomatoes which got blights (they tried to fight them with natural products). When planted tomatoes again in the following year on the same place, the deseases came again, earlier and more intensive than the year before. They thought moisture might cause that problem and they just changed the place this year, but still getting blights.
Anyway, besides of this very particular problem, don't you think that plant rotation is necessary to keep plants and soil healthy?