My tomatoes have some sort of disease. It's affecting Early Girl and Super Sweet 100 tomatoes and the symptoms are that the interior leaves yellow, then brown and die. The green leaves curl. The plants have lost vigor and drop fruit or produce poor-tasting fruit that ought to be bursting with flavor. Leaves in a late-intermediate state of failure show green on the veins and yellow creeping in from the edges giving way to brown. Yellowed leaves have holes, perhaps indicating predation, but there's not huge numbers of critters on the plants. Both of these plants came in from the local nursery, instead of being grown from seed as my later plants have been.
There are some aphids, but not in overwhelming numbers, so I think that's a result of the plants' weakened states. I'd put a picture up, but my crappy Samsung camera refuses to turn on due to low batteries, even though the batteries ought to be fresh.
These symptoms are consistent with fusarium and verticillium wilts, except the curled leaves. However, both hybrids Early Girl and Sweet 100 ought to have F and V resistance. Neither has T (Tobacco Mosaic virus) resistance.
I didn't pay too much attention to it, but the problem started before I left for Germany. Now that it has my attention, I've decided to take action by purging the plants.
The tomato problem solver suggests alternaria canker.