Name that disease

[ChrisK]

My Rio Grande plant is the only one suffering from the affliction as of now. Leaves are yellowing from the bottom up and dark brown areas are showing up in the crook of every lateral branch on the plant. Some are oozing from the brown area. Fusarium?

[casserole]

Pull that plant and put in a plastic garbage bag in side another plastic bag ,toss it in the sun to dry out could be blight nothing to fool around with

[ChrisK]

Here are pix. Hope that helps someone diagnose.

Plant is gone.

[rsg2001]

It looks bad. I don't think it's fusarium - i have had that, and what happens is that at first the branches yellow on random branches, not from the bottom up. And, when you pull the plant out, cut the main branch and you'll see brown scarring INSIDE the stem (usually not in the 'armpits' as your pictures show - as the determiner. Unfortunately, I don't know what it is your plants have, however.

[RayR]

In the third picture, is that a fresh cut?
Could be Bacterial Canker, the oozing from the lesions would be a sign of bacterial infection.
The only way to know if it is bacterial rather than fungal is to place a fresh cut stem in a clear glass container of water and look for white or yellowish bacterial strands coming out.

[ChrisK]

Fresh cut within maybe 1 hour. The pith was what I noticed as discolored when I was cutting it out. Definitely a systemic infection. I do not recognize it from descriptions of tomato diseases I have read. Plant pathology classes were way too long ago, too!

[RayR]

Yep, no doubt systemic. Once the bacteria infects the vascular system, it's all over. Nothing you can do about it. Best you got rid of it. Nasty disease.