HELP! I read it could be early tomato blight, but it could be lack of nitrogen in soil. ANy help, much appreciated. SO far out of everything I have grown, my tomatoes are the best, most amazing! I can't believe I GREW them! So I'd like to not ruin them this far in the game. As far as I know I have done everything right, except I noticed they got very big and need to be repotted into something bigger. I bought more pots today. Other than that, I don't know how they got the yellowing of the leaves. Before this year, I wouldn't have cared b/c The tops look so healthy still, but I have read a lot, and I read that yellowing tomato leaves are very serious. I'd like to deal with it quickly. What should I do?
@linzelu100: I just read @julia42's comment. If they are still in pots she right, they may need a dose of liquid fertiliz.... If these are some you started in February the mix may be getting depleted.
I would use hydrogen peroxide 3%. I have used it on my beans for rust and it worked well. It well work for blight on tomatoes very well too. http://www.dirtdoctor.com/Hydrogen-Peroxide-Newsletter_vq238....htmAs a preventative I would add horticulture grade corn meal to the soil once you get the blight under control. It help to generate a beneficial fungus called tricoderma.http://www.dirtdoctor.com/Cornmeal_vq1372....htmdo not be discouraged by blight it can happen to even healthy plants.
@joeythejoe: Thanks for the tip. Your sites don't work. Frustrating about this site, never able to copy and paste sites. I did find them though on my own. Thanks I think I will start with the peroxide first.
Also, if it's only a small number of leaves at the bottom, you should pick them off - this should slow the disease (if it is a disease). Be sure to disinfect your clippers and hands between plants! Are the leaves spotty? I get the impression that yellowed leaves without spots usually have more to do with moisture levels and nutrient uptake. In that case, you may want to give them some fertilizer. This especially might be the problem if they're in pots.
@julia42: Just chiming in to say that Julia offers some really good advice here. I battled early blight in my tomatoes last summer - the leaves definitely have brown spots and start to yellow from the spots outward. If it is blight, the best thing to do is to remove the affected leaves as quickly as possible as Julia mentions. Also, when you water the plants, be careful to avoid letting the soil (where the blight is) splash up on the plants. Good luck!
@julia42: wow...lot's to take in here. Before I do anything I think I better take a picture. I've been avoiding the basement but I will go down there. (There is a HUGE spider)
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