DaMonkey007, what do the undersides of the leaves look like below the pale spots?

There are a couple of possible fungal diseases if the undersides look odd. In your area Leaf Mold is more likely.

Look here on the third chart with a yellow heading (or Find the phrase "Leaf Mold"):
http://vegetablemdonline.ppath.cornell.edu/DiagnosticKeys/TomLeaf/TomLeafKey.html
Click on the link for more photos.

What was the source of the plant?

More info here:
http://erec.ifas.ufl.edu/tomato-scouting-guide/diseases/leaf-mold.shtml

http://www.ehow.com/how_7668257_stop-mold-tomato-plants.html

I've had no experience with this, but in your place, until receiving better advice, I'd isolate the plant from the other tomatoes before it spreads.

Hey missingtheobvious,
Thank you very much for the reply and the information. The picture from the UF extension link looks ALOT like mine, however, there is nothing on the undersides of any of the leaves. You can see the pale spots, thats it, no growth of any kind, anywhere.

The plants came from a local nursury, they were raised from seed by the owner, and all my plants get treated preventatively with neem on a weekly basis.

Any other ideas?

PJ

PJ,
You mentioned that you're giving the plant MG everyday.
The plant doesn't need nearly that much fertilizer, and since it's water soluble you're probably overwatering as well.
I'd back off the fert & water (let the mix dry out some before watering)& see if it comes back to normal.

DM007, I'd make sure to examine the undersides of those pale spots every day. I've no idea whether Neem is effective against this fungus; maybe someone else will know.

Hi Robeb,
Thank you very much for your input! I use a free draining soiless potting mix that perches little to no water, aka the 5-1-1. I'm not sure if you are familiar with this type of medium, but daily fertigation is quite common. It's 85 degrees today, and has been above 80 for some time. This particlular plant currently receives only about 1-1/2 quarts of water per day, just until it starts to drain, and the MG is diluted accordingly to 1/4 strength for this continuos feeding method. All of the other tomatos are thriving, this one is too - besides the spots, some are growing upwards of 2" per day. I'm not saying that the spots are not being caused by my fertigation schedule, but I do feel that it is unlikely. Maybe I'll back off to every other day for a week to see if anything changes.

Thanks!

PJ

PJ,
I didn't notice that you were in Miami when I read your post. At 85 degrees a day they probably do need daily watering, but I have to wonder if the daily fert could be causing you problems.

If you are fertigating at every watering, you need to be sure to thouroghly wet the soil so that quite a bit of water drains out the bottom at least every so often, to prevent the buildup of salts.

I will take a shot here at low potassium intake.

DM007, have a look at Sherry's photos in this thread: she's got the pale spots on the upper side of the leaves, with the dark fungus on the reverse side....
http://forums.gardenweb.com/forums/load/tomato/msg031540549962.html?24071

Hello All!
Thank you so much for your relpies!

ncrealestateguy,
I do flush with lots of clear water once per week.

robeb,
I've considered over fert as well, however, I would expect to see some symptoms in the other plants on the same schedule. It can't hurt to back off of this plant for a little while though, I'll give it a shot.

missingtheobvious,
I have been checking, still nothing, the undersides are mold free.

tennandy,
Do you have any recommendations, if it is a lockout of some kind?

Thanks again y'all!

PJ