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Confusing Oncidium Roots

This is a discussion on Confusing Oncidium Roots within the Orchid Ailments / The Compost Pile forums, part of the Orchid Culture category; Any Ideas what is happening to my Mule Ear Oncidium Roots? There is a lot ...

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  1. #1
    TirSigel's Avatar
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    Default Confusing Oncidium Roots

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    Any Ideas what is happening to my Mule Ear Oncidium Roots? There is a lot of new growth but a few just decide to do this...Humidity is around 60%, Temp in the low 70's.

    Thanks,

    Kevin

  2. #2
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    Looks like thrips in the first photo.

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    I also got the same thing I dont know what are the cause than it will be recovered completely, could be chemical or bugs as Cathy said

  4. #4
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    I see it mainly on vandas at my house. They just girdle the root. If you Google, you will see it. I use Orthene about once a week this time of year.

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    Well, Chemically I treated with Orthene about 2 weeks ago. My water hasn't changed. You still think it may be bugs??

  6. #6
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    Are your plants outside? I find that anything that is holding an orchid that is wooden is a thrip hideaway. Be it a basket or a driftwood mount. The only other thing it might look like is when you have salt build up and new roots touching the pot rim will look like that.
    As I said, I have to spray at least once a week and honestly I do that for most of the year. If it is dry for more than a couple of days thrips move in. Mow the lawn...thrips. I use 1 TBS of Orthene per gallon on water with no ill effects.

  7. #7
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    I agree with Cathy, certainly looks like thrip damage. I have had a very bad year, last year, trying to get rid of these bugs. Don't like Orthene because of the very strong smell, and its very high potentcy. I have been using Merit 75W which is systemic, apply according to instructions, and this worked well for me. Your will also have to treat your wooden mounts since the eggs and larvae are in there.
    Hope this is of some help.
    Good Luck.

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    Oh god am I glad you started this thread! I'd never dealt with thrips...or so I thought. I have seen this sort of problem on a couple of my plants and assumed it was some problem with my water or ferts. THANKS!
    Posted via Mobile Device

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    Glad to help! lol. I also was initially thinking that it was a water issue at first. Looks like I'm off to kill again. I think my count may be in the thousands by now if I count all the fungus gnats and wood worms...
    It's just amazing how they get to your plants when they haven't even been outside yet....

    Thanks for the help!!

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