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03-30-2012, 03:55 PM
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Join Date: Feb 2012
Location: Pinellas County Florida
Posts: 37
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Is This Erwinia on my Phal leave?
Here are a few pics of what I suspect is the dreaded Erwinia bacteria. Not 100% sure
If it is what are the best solutions for erradicating it.
Thanks in advance.
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03-30-2012, 04:55 PM
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I would remove the leaf immediately, treat with alcohol, and then wait to see what others say concerning what chemical is best to use. Good luck!
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03-30-2012, 05:09 PM
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It looks like it certainly could be erwinia. Is it kind of watery, and have a nasty smell? Separate it from your other plants ASAP. Cut that leaf off immediately and cross your fingers and hope for the best. To my knowlege there isn't a chemical you can use on erwinia that is effective. Erwinia moves so fast the plant dies pretty quicly.
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03-30-2012, 06:26 PM
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Give it a good dose of hydrogen peroxide for several days. I've saved a few paphs that way. I've never had it attack any my my phals but it does sort of look like it could be erwina.
Bill
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03-30-2012, 07:10 PM
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Cut that leaf off, and it should be the end of it since it hasn't spread to the crown yet. Thtat's what happened with mine at least.
Quote:
Originally Posted by quiltergal
It looks like it certainly could be erwinia. Is it kind of watery, and have a nasty smell? Separate it from your other plants ASAP. Cut that leaf off immediately and cross your fingers and hope for the best. To my knowlege there isn't a chemical you can use on erwinia that is effective. Erwinia moves so fast the plant dies pretty quicly.
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Howard had a bad case of Erwinia last year. He lost a lot of Phals, but I think Phyton 27 stopped the spread.
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Camille
Completely orchid obsessed and loving every minute of it....
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Last edited by camille1585; 03-30-2012 at 07:17 PM..
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03-30-2012, 07:13 PM
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Looks like it could be. If you're going to cut the leaf off and keep the plant, isolate it far, far away from your other plants. You might want to proactively spray your other plants with Phyton 27, which is systemic, unlike Physan 20, and clean all table/shelves surfaces with physan or bleach. That's what I did last summer when several phals got hit with what I believe was Erwinia following a prolonged period of high humidity. I only lost 3 or 4 plants and one Ambo that I was iffy on whether or not it was infected with the same has fully recovered and since rebloomed.
EDIT: Be sure to read the safe handling instructions that come with the Photon 27 and wear rubber gloves. It's fairly safe once diluted to the appropriate strength, but you do not want to get even a tiny drop of undiluted phyton on exposed skin.
Last edited by Jayfar; 03-30-2012 at 07:17 PM..
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03-31-2012, 02:07 AM
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I would concur and say yes it is soft rot caused by erwinia. It can kill the whole plant in 3 days if left to itself.
you just cant leave any water on top of the leaves at all. the erwinia is spread by the water. you probably are going to find more of this if you havent been careful.
keep the leaves dry after you cut that leaf off and you should be okey as said..
I got hit with erwinia too and its not a death sentence if you take care of it right away. If you had been gone for 4 or 5 days , you would have had a black smelly mass of pooh waiting for you.
Check your plants everyday that you possibly can until you are absolutely sure what you are doing is safe and proper. Be sure to use sterilized tools all the time no matter how good you are. Limit your sources of infection to start with.
We learn the hard way with orchids it seems
Good luck!
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04-01-2012, 08:00 PM
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Well I lost the plant.
I unpotted it to see the condition of the roots,which weren't too bad when I repotted it 2 days ago.
Every root had it's vellum (or how ever it is spelled), collapsed and it peeled off the root hair.
Whatever I had moved quickly and destroyed my plant.
Denny
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04-01-2012, 08:08 PM
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Sorry to hear that, but not unexpected. I strongly recommend that you follow up with a preventative spraying of Phyton 27 for any plants that were near the infected one. Orchids.com is one place that has it, but it's available a few other places online as well. Follow all label precautions and wear disposible rubber gloves, as noted in my previous post.
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