Late Blight?? Oh I hope not...
I lost all 25 tomato plants last year to late blight (first year with a garden too, quite a hit). This year I planted fewer plants, spaced them out properly (about 2-3 feet), and did not overfertilize like last year (way too much chicken doo-doo last year). I have also been applying a 70% Neem oil solution every 7 days.
I have aphids and have been spraying them off everyday. I just noticed today, the bottom leaves of several plants (an heirloom Mountain Fresh, Carolina Gold) are turning yellow around the edges. Some of the yellow lesions are now brown rimmed with yellow.