Information and discussion regarding garden diseases, insects and other unwelcome critters.
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June 29, 2015 | #1 |
Tomatovillian™
Join Date: Mar 2015
Location: Seattle area
Posts: 76
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another "what's wrong" question
The Master Gardner at my community garden couldn't help and the leaves degraded too much by the time they'd sent them to the county extension office. So, any ideas? These are just on the lower leaves on my two Cosmonaut Volkovs. The plants seem super healthy with baby fruit and lots of flowers. No other plants seem to be affected. I've removed all the yellowing leaves and sprayed with Neem oil.
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June 29, 2015 | #2 |
Tomatovillian™
Join Date: Aug 2011
Location: Plantation, Florida zone 10
Posts: 9,283
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Removing all the infected leaves and spraying with Neem was perfect. That is early blight, and its a fungal disease. I prefer copper spray, but Neem should do the trick.
Best to get on a regular preventive spray regimen, every 7-10 days, and also right after a heavy rain. |
June 29, 2015 | #3 |
Tomatovillian™
Join Date: Mar 2015
Location: Seattle area
Posts: 76
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Thanks. I was hoping it was a nutrient deficiency.
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June 29, 2015 | #4 |
Tomatovillian™
Join Date: Jun 2010
Location: Cheektowaga, NY
Posts: 2,468
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I can't tell what that is, the pics are too small. It could be EB if there are brown lesions with a concentric circle pattern.
Look at Cornell's Tomato gallery site and see if anything looks familiar. |
June 29, 2015 | #5 |
Tomatovillian™
Join Date: Mar 2015
Location: Seattle area
Posts: 76
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OK, I'll make the pix larger and add another one. I couldn't find any matches on the Cornell site. That was the first place I checked (love that site!). It starts with a bright yellowing of the leaves on the edges and then a little brown area develops. It's not concentric circles.
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June 30, 2015 | #6 |
Tomatovillian™
Join Date: Jun 2010
Location: Cheektowaga, NY
Posts: 2,468
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Powdery Mildew is the only thing I can think of that it resembles.
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June 30, 2015 | #7 |
Tomatovillian™
Join Date: Mar 2015
Location: Seattle area
Posts: 76
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Hmm, that link looks pretty close. Mine's not powdery, but it seems that there are different strains. Unless it's a nutrient or watering issue, it may not matter what it is if the treatment is the same for multiple issues. I'm hoping that removing the leaves and spraying with Neem oil will keep it under control. Thanks for your help!
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June 30, 2015 | #8 |
Tomatovillian™
Join Date: Jun 2015
Location: No.Central Arkansas - 6b/7a
Posts: 179
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Sure looks like Early Blight to me. You can see the classic bullseye spotting on the big leaf on the right side of this last pic. Look at the spots just below the double string.
But regardless the treatment is the same - remove all the affected leaves and dispose of them away from the garden and spray with fungicide of your choice. Powdery Mildew is usually white spots, Downey Mildew is yellow in color but in more of a shotgun pattern. As for nutrients issues - the only thing that might fit would be excess nitrogen leading to leaf tip burn but the rest of the plants in the pics look fine and healthy. Leaf tip burn usually shows up in the new top growth not the older growth. Dave
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Dave |
June 30, 2015 | #9 |
Tomatovillian™
Join Date: Jun 2015
Location: Piedmont of S.C.
Posts: 8
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I'm a newbie but have grown lots of tomatoes. It may be early blight, although the characteristic bull's eye isn't that obvious to me. If it were here, I'd say it's more likely Septoria leaf spot. Both early blight and Septoria are fungal; wet weather exacerbates the problem. Doesn't look too bad, though, more like it's just starting out. Here, if I want tomatoes at all, I have to use an anti-fungal spray religiously on a schedule of every 2 weeks and after it rains. The spraying covers a host of diseases. I use an organic one.
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