Wilted tomato plant, pest or disease?
Today when I went out to check my garden, I noticed that the top of one tomato plant is completely wilted and limp. The rest of the plant looks fine. All of my other plants look fine, except one has some yellowing from excess rain. The part that is wilted is green, no yellow or brown spots at all. It would look perfectly normal if it wasn't wilted. The bottom of the plant looks fine. It's just the top 12 inches or so. There are no obvious insects present. Does this sound familiar to anyone?
Is there an insect or disease that would cause this? What should I look for to determine the problem? It would not be lack of water. We've had lots of rain here lately. I would expect some yellowing of leaves from excess water. I know there are various types of wilts, but it doesn't look like any of the online photos of any of them. Most of the wilts do cause some yellow or brown spots or both. Do any of the wilts start out with no other symptom but the wilting with spots showing up later?
It seems really odd that it would be the top portion of the plant. Most diseases seem to start at the bottom and work their way up.