Leaf spot on tomatoes

Question

This past season I planted mostly heirloom tomatoes I grew from seed in my small garden and I was infected severely with septoria leaf spot.
I sprayed somewhat slowed down the septoria and cleaned up all infected leaves this fall.
My concern of course is having septoria return next season and with small garden I don not have the luxury of rotating my crops.
What might I do to prevent the return of septoria to my tomatos next season?

Answer 1

The best thing to do here will be to clean up ALL debris in the area. Dispose of it away from the site, and let it sit for a whole year before planting again. You will also want to treat it with a fungicide at the start of the waiting period.

This article will help: https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm

since you don't have a way to rotate your crops, the empty waiting period will simulate this.

Here is some more information on the disease: https://www.gardeningknowhow.com/edible/vegetables/tomato/septoria-leaf-spot.htm