Some of my Early Girls and a couple of Indeterminate species of 'Maters developed yellowing on one side of each plant in different beds scattered in two towns. A Green Leaf Lettuce in a small raised bed at home also developed this yellowing; which I've settled as being caused by the last cold snap in which the temperature dropped to 38 degrees a couple weeks ago... which caused this malady.
Never again will I set up the heavy duty tomato cages which kept us from putting low tunnels over these plants like last year in which our community garden lost zero greenery or production because the low tunnels kept the soil temperature higher than normal early spring would normally be and the chilling affect of the wind off of my young tomato plants. Lesson "re-learned."
While it may be a pain to set our heavy duty tomato cages over our 'Maters in May, it's just a bit of extra time and care to weave vining tomato branches carefully into the support cages give; but not worth the risk of setting the cages too early in the spring. When I reviewed the Pictorial Journal source for the above photo I was reminded of
WHY we plant tomatoes LATE in their season:We encourage the growth of radishes and green onions in the beds we plan to plant tomatoes (always from potted sets) in order to reduce the nitrogen to phosphorous & potassium ratio that tomatoes prefer. Besides we have a hard time giving up our organic lettuce, onions, and radishes till the last possible week, you know?