Backyard Aquaponics
A place to discuss aquaponics

Too much moisture
Tomatoes prefer dry heat and the combination of AP plus being in a greenhouse is too much.
Either GH with no AP, or AP in an outside environment

cheers
Rodney

I beg to differ there Rodney. I have grown tomatoes in my greenhouse/shadehouse for many years in selfwatering tubs. The tomatoes roots are constantly in water.
The tomatoes in question are in AP in and outside environment
They have come good since I did a partial water change and stopped adding seasol, and eco rose. It was an overload of potassium me thinks

I have same thing - I don't think it's potassium in my system as I haven't added any! However I noticed that the plants that are really crowded seem to suffer more so I'm guessing it's a bacterial thing.

Am pruning off the affected growth and thinning out the branches, hopefully will have something to report.

Yes you need lots of air around the plants and pruning off the lower leaves will only do them good if they are crowded. My problem was happening on stand alone plants, so overcrowding not the issue
Just realised I have been burying banana skins in the beds as well, yet another source of potassium

Tommies certainly do like air flow around the plant, but then I just live with the fact that the bottom half of the plant will be mainly dead leaves. Some people get upset about it and try to fix it, I just leave it, still get heaps of tommies, just the bottom half of the plant looks a bit crap ..

Sorry for bumping an old thread. I've got the same problem, but only on my mature grape tomato, not my Roma seedlings. I don't think it is what EB said, as it is on leaves all the way to the top (well above other plants), not just the bottom ones. Thought it might be a scortch from the two 35 deg days we had, but it is still progressing. I'm still getting flowers. Leaves look a little droopy too.

Almost all disease info sites I've found show images and diagnosis description for mature disease. But I wanna try and nip this before it gets worse. Will post pics this arvo.

Cheers

Yes post pics, they will help diagnose the problem. I guess its good to restart this thread as we are in tommy growing season down here again

http://aggie-horticulture.tamu.edu/publ ... lemsolver/

That link may help

Thanks. I found that page before, but could not narrow it down using table due to symptoms being so new.

It seems to have slowed down now anyway. So it's probably due to the 2x35 degree days we had followed by 4 of drenching rain. too much heat and moisture.

here are some pics i took on my phone in a hurry. might not be detailed enough. some of the black spots have tiny black dots around them, they look like mites but i dont think they are.




thanks.