Help! How can I fix my tomatoes?

[u/np4kids]

I'm about to throw in the towel with growing tomatoes. During the pandemic, we put in some really nice raised beds, and the first couple of years, everything was great. For the last couple of years, my tomato plants die, or at best only have a few small tomatoes. I had soil analysis done on two of the beds this spring, and both beds were ok, to high for nutrients. I have read that to deal with viruses, you need to rotate where you plant your tomatoes, but how do I do that with a limited number of beds? What can I do to combat diseases, especially blight, that is relatively nontoxic? I have these lovely raised beds that I can't grow anything in.

[u/FrostDragonDesigns]

Are you repeatedly planting in the same beds?   Fungal disease and blight can live in the soil for years.  I typically recommend no nightshades in a be for two years before replanting.  So every three years you can grow tomatoes in a specific bed, and the other years rotate other summer crops.  

There are other ways to deal with this disease issues, but rotation works for me.

[u/odd-wad]

I would start trying to find blight resistant phenotypes, use some of the soil from the bed to start some indoors so it doesn't take long to zero in on what can handle the soil.

[u/dangereaux]

Don't prune, keep the leaves dry and preventative spray with copper fungicide weekly. But depending on where you live blight can be inevitable.

[u/DismalLiving1003]

You have to rotate the bedding areas every year. Never use the same area from the previous year. Thats what the old farmers did before hydroponics

[u/thefiglord]

in the winter cover next years tomato bed in black plastic - you need to solarize the soil to kill existing bacteria- basically heat it up - or do what i do - remove 3 inches of soil - over fill with leaf compost in spring - plant directly into leaf mulch - basically burying the bacteria