Need help with tomato problem

hoek59 · May 17, 2011

I need help figuring what or how to correct a problem with two of my hydroponic tomato plants. I started these plants in my basement greenhouse setup using a 600w light, humidity of 68%, night temp of 65 deg. F., day temp of 74 deg. F., a box fan provides good air movement and the plants are set in a Grodan block. All other tomato plants are doing fine. Please see photo's. I have spent hours searching the web for possible symptoms and the only thing I can come up with is a possible edema issue. Any help will be appreciated.

RayR · May 18, 2011

Ya, that looks like edema to me. I'm not a hydro grower so I don't know much about what you can do about it other than if you have been pruning, stop pruning and hope the extra leaf growth will transpire the excess water through the leaves. Cut back on the humidity a little bit may help also.
It's a physiological problem, not a disease anyway, so its not fatal.

hoek59 · May 18, 2011

Thank you. It's my first time using wool blocks and may have over estimated the need to water. "Experience is the worst teacher, it gives the test before the lesson".

hoek59 · May 18, 2011

I tried to post a larger pic, but the forum restricts the size to a postage stamp view.

May 18, 2011	#2
RayR Tomatovillian™ Join Date: Jun 2010 Location: Cheektowaga, NY Posts: 2,466	Ya, that looks like edema to me. I'm not a hydro grower so I don't know much about what you can do about it other than if you have been pruning, stop pruning and hope the extra leaf growth will transpire the excess water through the leaves. Cut back on the humidity a little bit may help also. It's a physiological problem, not a disease anyway, so its not fatal.

May 18, 2011	#3
hoek59 Tomatovillian™ Join Date: May 2011 Location: Burr Ridge, Illinois Posts: 3	Thank you. It's my first time using wool blocks and may have over estimated the need to water. "Experience is the worst teacher, it gives the test before the lesson".