Please help me identify

[mprasek]

This condition wiped out my Better Boy in about 2 days. I noticed some yellowing lower down on Wednesday morning, Thursday evening it was about 30% of one side lower down, and this morning (Friday) it was about 70% of the lower 3/4s of the plant. I cut down and bagged the plant this morning, and selectively removed the leaves and stems on the Early Girl next to it that was affected.

There was no "ringing" in the stems that I cut, they looked green and healthy and moist.
The stems of the severely damaged branches were collapsed and brown, but again, still no rings.

Gave the Girl a hit of liquid Sevin, and fish fertilizer near the roots ( it probably was time for both of these, anyway, but did not wait until the evening, like I usually do.)

I am in Houston, we had lots of rain in the last two weeks, and none to speak of since Friday last week. There has been a little more dew on some mornings, but I was not tracking it.


Can someone help identify it please?

Thanks in advance.
Mike