We had planted our tomatoes on May 13. They were Early Girls. Well they came along kind of slow but okay (we did have a wet spring). I side dressed once with some well rotted manure and watered a few times with Miracle Grow. A couple of weeks ago I noticed the bottom leaves were a little yellow, called my county extension and they said lack of nitrogen, which made sense. They said to put some 5-10-10 around the base and cover it with dirt. I did that, then we got a rainy spell about 1 and 1/2 inches. Then the sun came out and, finally, (on a side note there was one plant that was kind of a "runt" and didn't gain much in height, was kind of spindly looking), the other 5 were looking pretty good. They had blossoms and some had tomatoes started. Anyway, the sun came out and I noticed the remaining plants were starting to wither and die and flop over in their cages. It looks like on a few of them the main "trunk" is turning brown. What do you think? Let me know if you need further info, clarification.