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| I did some research on these forums to determine that leaf curl on new growth can be the result of herbicide damage, contaminated compost, or just a normal reaction. These plants have been in the ground around 3 weeks. We have had heavy rain (dumping an inch of rain in a couple hours) followed by 3 days of dry 80 degree weather. They were planted with a couple scoops of compost mixed in the hole with 3 tablespoon of tomato tone. Seems limited to Mortgage Lifter, Black Krim, and maybe BeefMaster. I just started noticing this over the past few days. What do you guys think? Normal or do I need to worry? http://www.flickr.com/photos/mambooman/8794026734/ http://www.flickr.com/photos/mambooman/8793998492/ |
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| Herbicide damage or contaminated compost. Lawn treatment mist can also travel over great distances, so you would be hard pressed figuring out which neighbor's spray caused it. Tomato plants are the proverbial canary in the coal mine, they react to tiny amounts of toxin via roots and leaves. They grow out of it eventually, as long as there isn't too much follow-up toxins flowing into them. It does set production back a bit though. Your situation may be more complicated if it came from the manure, there may be more toxins waiting to flow into the roots. Hopefully someone here can chime in with some ideas on how to deal with contaminated manure. I imagine digging some of it out wouldn't hurt though. |
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| I agree with the herbicide diagnosis. Here's info re contaminated organic matter If that's what the problem might be, locate the info about doing a simple bio-assy to verify or not. |
Here is a link that might be useful: clopyralid herbicide contaminated soil
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| I was kind of afraid of that... |
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- Posted by bmoser z6PA (b2m2@moserproduce.com) on Wed, May 22, 13 at 22:51
| Although other responses might be correct I wouldn't get too excited just yet over these observances. It could be just the plant reaction to higher soil salt level combined with higher temperatures. Some composts may be too high in nutrients (salts) that would trigger that type response from the plant. Many tomato plants will show a degree of wilting in the top growth just from high temperatures. The bottom line- do plants return to normal rigor after the sun sets? It could be that all you need is a shade cloth. |
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| After thinking about this more, I am pretty convinced that it is the compost. When planting there were 2 plants that I know of that I forgot to put the compost in the hole....and they show no signs of the issue....yet. I am going to run the test from the link that jean001a gave to verify. In terms of treatment, I did see a post on some UK forums that suggesting watering steadily over the course of a few days to help flush the area. Then, hit them with a fertilizer. I may test that on one plant to see if I can get it to come out of it a bit sooner than the others. |
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