[Mad Dawgg]

anyone who can help my identify what is happening to some of my beefsteak tomato plants I will be forever grateful to you.

This is a close up of one of the leaves with a spot on it.

Here is shot showing spots on only two of my 6 beefsteak plants. The rest are spot free so far and so are all 6 of my yellow tomato plants.

The two on the left (in the cart) in this shot have the spots. None of the others have any so far.

[Black Agnes]

Have you been to ‘tomatoville’? They have all sorts of info threads there on tomato afflictions.

I highly recommend it.

http://www.tomatoville.com/

[who knows what evil?]

Looks like a classic case of sun scald...

[Sarajevo]

See if this matches you plant symptoms:

Late Blight,Phytophthora infestans

[greeneyes]

I would pick off all the leaves with spots and destroy them; don’t put in your compost pile. The pictures look like white spots, and generally that’s a mold or fungus, though some sort of blight could be a cause too I guess.

Is your climate hot and humid? We always have trouble with the lower leaves of our tomatoes, but they are usually yellow or brown/black spots. I always just cut them off and dispose of them, and the rest of the plant does fine.

As a last resort, you may need to try a fungicide. I also have less trouble when I mulch the tomatoes to preserve moisture, but also it helps keep soil borne diseases off the leaves.