Frank Thompson writes:

most of my potatoes are dead or are dying...they wilt &
ddie...pulled them up to examine & at base of stem appears that some
pest has gotten inside the stem & eaten it away...did not see
anything live...any suggestions as to what it might be?

Could be European Corn Borer. It wiped out most of our potato crop
last year, and the symptoms sound just like it. If you do a web
search, I'm sure you can find pictures of it to compare.


--
Aaron