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Bush snails and Mesurol

Discussion in 'Issues, Disease and Pests' started by OH23, Jan 31, 2017.

  1. Jan 31, 2017 #1
    OH23

    OH23 New Member

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    Hi guys,

    I have a serious infestation of them little buggers on my orchid mounts ( as they came from thailand ) .
    I know that Mesurol is the way to go if i want them gone.
    I'm just trying to make sure whats the Mesurol to Water ratio i have to use in order to drench them as i have about 40 miniature orchids and all of them are infested.

    Thanks in advance
     
  2. Jan 31, 2017 #2
    naoki

    naoki Well-Known Member

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    Around here, I can't get it without the license, so I've not used it. But here is the recommended dosage: 2lb/100gallon according to:
    http://www.gowanco.com/Document.aspx?id=967
    It is equivalent to 2.39653g/L (0.24 w/v %). This is for Mesurol-75W (75% methiocarb). I noticed that in Europe, Bayer sells Mesurol WP50, which is 50% methiocarb, as well as metaldehyde-based bait under Mesurol, so you should make sure.

    The last time when I looked up (about 2 years ago), the recommended dosage was 2x (0.48 w/v %). Also, Dr. Hollingsworth's paper from 2003 used 0.48% to study about the effective molluscicides against bush snails.
     
    Last edited: Jan 31, 2017
  3. Feb 1, 2017 #3
    OH23

    OH23 New Member

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    Thank you Naoki for the detailed reply, i appreciate it.

    I have the WP50. what would be the % of mesurol for 1 liter of water ?
     
  4. Feb 1, 2017 #4
    naoki

    naoki Well-Known Member

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    Methiocarb is the active ingredient, so 50% of your powder is the active ingredient. Here is the link to Mesurol WP-50 info: Mesurol WP 50 - Bayer CropScience Iraq
    But they don't list snails. So with Gowan's info against snails, you can use yours at 3.594795 g/l (=2.39653 * 75/50). If you want to follow Dr. Hollingsworth's concentration, you need to double it. I followed Dr. H's dosage for caffeine, and I killed lots of orchids, so I would probably go with Gowan's recommendation.
     
  5. Feb 1, 2017 #5
    OH23

    OH23 New Member

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    Thank you Naoki.
    I'll start with Gowan's recommendation and see how it goes.

    i'll submerge the orchids for an hour in a 10 liter platisc storage bin.

    see how it goes.

    p.s here are some pics of bulbophyllum gracillimum that flowered few days ago in one of my vivariums.
     

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    Last edited: Feb 1, 2017
  6. Feb 6, 2017 #6
    OH23

    OH23 New Member

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    Did the Mesurol treatment and looks like it did the job. as of now, almost a week after, there are no signs of any kind of snails. ususally it was pretty easy to spot them after the lights went out. i just had to pick up the mount and turn it over and you could spot numeros of snails ( cone and bush snails ).

    ill upload some pics i took of the snails on he back side of the mount ( as soon as i get home ).
     
  7. Feb 6, 2017 #7
    Marni

    Marni Well-Known Member Staff Member Supporting Member

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    The bush snails have about a 30 day life cycle so you will want to treat again since it doesn't kill eggs.