Anyone have an answer??

My tomato leaves have started yellowing & die leaf by leaf, limb by limb, going from bottom to top of plant. I can't see any "bugs" anywhere. Any answers please??

looks like you have a case of blight, which is a fungal disease. Most often is likely to occur if plants are too closely spaced together that it restricts air circulation, or if theres water splashing up soil onto the leaves. Or sometimes even if its just plain too humid. Usually once a plant gets infected with it, not much can be done for it.

When you are stuck in a wet and humid weather pattern like you guys in TX have been in, best advice is to get an anti fungal plant spray and use as a preventative weekly.

Sounds like Fusarium Wilt. It is a soil borne fungus Normally combated by using resistant varieties. Fungicides are pretty useless if that is the problem. http://plantdiseasehandbook.tamu.edu/food-crops/vegetable-crops/tomato/

Thanks for both replies. I will try to determine exactly what this is tomorrow, but it's supposed to be raining again.......

Yay for more rain....NOT! LOL We're still water logged.

Yeah those look like a foliar fungus. Some sort of copper spray or Daconil can help slow the spread to new leaves, cut off and remove the infected leaves from the vicinity, I usually prune them into a small box and dump it in the kitchen trash.

You can sprinkle dry garlic powder (like you probably have in your spice rack) on the ground around the plants, too. Trim off all affected leaves. Reapply after rain.

I didn't realize F. Wilt could cause leaf lesions....this humidity is going to do me in. Lol

I'm ripping all my tomato plants this week. Too much rain...

I'm tempted to pull mine up, but I'll try the suggestion of copper spray or daconil, then sprinkle the garlic powder. We'll see what happens