I have been gardening in raise beds and have had serious gopher problems. So this past winter I dug out my best to 18" deep and lined the bottom and sides below ground level with 1/4" thick cement board (tile board backer). Drilled plenty of holes in it for drainage and replaced all the soil. I constantly dig holes in my beds and bury our kitchen waste and let the worms do the rest.
this year my tomatoes look anemic with the lower leaves curled and turning brown. It could be that I over fertilized. I applied fish emulsion weekly and also a diluted about of scotts tomatoe miracle grow weekly.
I replaned a few new tomatoes and didn't fertilize, they seem to be doing fine. Once a plant is over fertilized is there any hope of saving it, or am I better off just replacing them?
Or could this have something to do with the cement board. My soil is soft after years of composting and having added a little sand to help break it up.