Any ideas as to what this spotting is on tomato's I just transplanted (these were started from seed)? The growth appears to be stunted in addition to the spotting.

Any ideas?

Pete, were your plants hardened off before transplanting? What is the medium they are growing in?

Weather has been a bit cool for heavy growth, but the yellow indicates water problems, looks like you are using a 'raised bed or container gardening' soil mix. If you are using city water to water with, try to catch some rainwater first chance you get. City water is full of chloramines and plants don 't like them. You also need to get a bit of a tomato fertilizer - not water soluble stuff - and fertilize. Dig fingers down 3 or 4" and see if that medium is wet. Also look into one of the 'manure humus and compost' types of mediums to plant in - with less shreds... hopefully you aren't dealing with any weed spray drifting thru with the wind.

My guess would be a nutrient deficiency. I'd give them a little shot of all purpose fertilizer and see what happens.
https://www.horticulture.red/e...
https://extension.wvu.edu/lawn...

Yellow leaves with green veins, interveinal chlorosis deficiency of probably magnesium, also the purple color is also a 2nd sign of same. Green to yellow to brown is the progression leading to dead...
50* is a magic number in Mother Natures realm. At 50* all night temperature a baby chick can survive without heat or mom. At 50* water temperature we stop feeding fish as they can not digest what they eat and it can kill them. At 50* soil temps plants stall in their growth patterns and we stop watering them. They will resume growth as the night temps maintain 60*.
Too cool, too much rain, they simply cannot uptake the nutrients they need.