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OfflineMarfa
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Registered: 04/25/11
Posts: 11
Loc: Argentina, Buenos Aires Flag
Last seen: 8 years, 2 days
Is this contaminated??
    #14355426 - 04/26/11 02:04 PM (12 years, 10 months ago)

Hello everyone! I am new to this site and to growing mushrooms, and I wanted to try and grow my own oyster mushrooms.
As I couldn´t get any fresh oysters i tried and used RogerRabbit´s method to rehydrate my dried oysters. As soon as I saw that mycelium was starting to grow off the chunks, I put the best pieces in some Potatoe Dextrose Agar petri dishes. I added some peroxide to it as well.
The first day this started to grow off the pieces and I wanted to you wheather it is contaminated or not.

Thank you very much













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"Only when the last tree has been cut down;
Only when the last river has been poisoned;
Only when the last fish has been caught;
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Offlinesolumvita
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Registered: 02/12/08
Posts: 2,061
Loc: South Africa
Last seen: 8 months, 20 days
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Re: Is this contaminated?? [Re: Marfa]
    #14359238 - 04/27/11 01:28 AM (12 years, 10 months ago)

Yes those are al contaminated with bacteria, you need to be quick to re-isolate the mycelia growing from the mushrooms to another dish before the bacteria overwhelms it.  sometime using a half strength PDA will help to reduce the growth of the contaminants.


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OfflineMarfa
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Registered: 04/25/11
Posts: 11
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Re: Is this contaminated?? [Re: solumvita]
    #14360290 - 04/27/11 09:48 AM (12 years, 10 months ago)

uhhhhh :frown: well, thank you very much for the information.

just hope next time it doesn´t get contaminated


--------------------
"Only when the last tree has been cut down;
Only when the last river has been poisoned;
Only when the last fish has been caught;
Only then will you find that money cannot be eaten."

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