Recommendations for ridding one's soil of blight spores
The weather has really screwed up gardening for many this year where it was unseasonably cold and rainy. Since there is a plague of late blight for tomatoes and potatoes rumored to have been triggered by infected plants sold by big box stores in the northeast and exacerbated by the weather, many are having to destroy their plants in midseason this year. Late blight spreads rapidly with wind and wind-blown rain action. Early blight of tomatoes, a pretty common problem anyway and not as lethal to plants, has also become rampant, as have other plant or leaf diseases.
My tomato plants are all on their last leg, not from late blight (which hasn't moved South yet en masse) but from septoria/anthracnose and early blight, I'm sure triggered by the strange strange weather we've had. They're browning and dying as they usually do in late August/early September, despite my spraying with antifungals for the EB. I didn't ID the anthracnose until it was too late. Fortunately, my bell pepper plants are incredibly green, lush, and are producing enormous numbers of fruit. Go figure.
Therefore, I'm worried about the garden soil for next year. After I've removed all the tomato plants, debris, and mulch, I want to do some serious organic treatment of the soil to rid it of as many of the spores and bacterial infections as possible, and then pray that the weather rights itself next spring and the diseases don't show up again.
As I said, I'm worried about the soil. I have only a few ideas, maybe put the (I'm sure) spore-ridden mulch in a very hot compost pile or compost it separately for a couple of years, application of corn meal to the soil, work in lots of compost, and/or solarization of the beds. Then new mulch that's clean next spring.
Any other suggestions for accomplishing this feat?