D.D. Palmer said:

What else do you want to know? The plants look great otherwise. It's been
hot and humid although there were long days where there was no rain and
I was careful to only water around the roots. Perhaps the lack of physical
stimulation (pollination?) was the problem? I don't know what else to tell
you.

Exactly how hot and humid? Night-time low temperatures much above
70-75 deg. F or daytime highs in the 90s can cause blossom drop. High
humidity can also interfere with pollination.

There are specific varieties selected to tolerate high temperatures.

http://www.kdcomm.net/~tomato/Tomato/heat.html


--
Pat K. ('someplace.net' is comcast)

Any technology distinguishable from magic is insufficiently advanced.
(attributed to Don Marti)