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Offlinefilyep
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Help finding cause of oyster mutations. Rosecomb?
    #26343845 - 11/25/19 04:17 AM (4 years, 2 months ago)

Hey guys been getting some mutations on my oysters lately. Not sure what it could be as there are many factors.

In GG&MM it lists: -competitor organisms
                              -Inadequate air circulation
                              -Excessive humidity or watering
                              -Bad strain
                              -chemical contamination

It's worth noting I am growing pioppinno and lions mane on similar substrate in the same room and they seem to be fine.

I tried reducing the humidity in the room from 96% to 94% but they seem to be getting worse.
I am thinking perhaps bacterial. The substrate is sawdust and soy hulls and I'm also using alfalfa in some.
I dose the humidifier reservoir with H2o2 weekly and use bleach to clean the room.
I return some exhaust air to the room for circulation. 
Species of oyster is P.o Blue and white strains.


Here's some pictures.







Edited by filyep (12/07/19 04:44 PM)


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Offlinemariapilz
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Re: Help finding cause of oyster mutations [Re: filyep]
    #26345045 - 11/25/19 04:33 PM (4 years, 2 months ago)

it looks like it's a similar mutation that i've had .... most likely caused by too humid substrate.



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Offlinefrog48
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Re: Help finding cause of oyster mutations [Re: mariapilz]
    #26345758 - 11/25/19 10:30 PM (4 years, 2 months ago)

I've never had it but I think it's too much humidity.

:frenchie:


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Offlinefilyep
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Re: Help finding cause of oyster mutations [Re: mariapilz]
    #26345944 - 11/26/19 01:54 AM (4 years, 2 months ago)

Quote:

mariapilz said:
it looks like it's a similar mutation that i've had .... most likely caused by too humid substrate.




Do you mean my substrate has too much water in it?

It's 60% water when spawned.

My humidity is set to fluctuate between 92 and 94%.

There aren't pools of water anywhere from humidity.


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Offlinefilyep
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Re: Help finding cause of oyster mutations [Re: filyep]
    #26345949 - 11/26/19 02:06 AM (4 years, 2 months ago)

Also I'm noticing it on the mushrooms when they are pinning or very small still.


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Offlinemariapilz
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Re: Help finding cause of oyster mutations [Re: filyep]
    #26345979 - 11/26/19 03:09 AM (4 years, 2 months ago)

Quote:

filyep said:
Do you mean my substrate has too much water in it?



Yes. What I have often observed: the slats (gills? ... I do not know the right word) are not nice straight but net-like or honeycomb. I attribute this to too much water in the substrate.

60 % whater should be fine.
humidity: I think ok. but 85% - 90% should be also fine.

what you can still think of: condensation. The places where your mutation occurs ... the usual places where condensation is?

Do you have bigger temperature differences? Day / night, cold air supply ... In summary, I claim that the problem is too much water. wherever.


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Offlinefilyep
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Re: Help finding cause of oyster mutations [Re: mariapilz]
    #26346003 - 11/26/19 03:52 AM (4 years, 2 months ago)

Quote:

mariapilz said:
Quote:

filyep said:
Do you mean my substrate has too much water in it?



Yes. What I have often observed: the slats (gills? ... I do not know the right word) are not nice straight but net-like or honeycomb. I attribute this to too much water in the substrate.

60 % whater should be fine.
humidity: I think ok. but 85% - 90% should be also fine.

what you can still think of: condensation. The places where your mutation occurs ... the usual places where condensation is?

Do you have bigger temperature differences? Day / night, cold air supply ... In summary, I claim that the problem is too much water. wherever.





Ah yes I see.

The room is not temperature controlled and it is spring here we get large temperature swing 40c one week and 16c the next. The room fluctuates between 12c and 21c.

The gills are not straight. I harvested some tonight and the caps feel quite moist.

I will try 90% humidity and see how that goes.


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Offlinefilyep
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Re: Help finding cause of oyster mutations [Re: filyep]
    #26353078 - 11/30/19 02:50 AM (4 years, 1 month ago)

So I dropped humidity to 90% and in this time I have fruited Elm and phoenix. They both grew with the same mutations.

I talked to a supplier and they said that it could be from spores on the caps from other the other mushroom species I am growing.

I have a return air from the outlet diverted back to the room to circulate the air so this could be the cause of the increased spore load.

Anyone else heard of spores landing on the caps of mushrooms and causing mutations?


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OfflineSHROOMSISAY01M
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Re: Help finding cause of oyster mutations [Re: filyep]
    #26353106 - 11/30/19 03:38 AM (4 years, 1 month ago)

Dude, it is not spores it is no fresh air. None of the co2 is being exhausted. The spores however are still a problem. When you walk in that room you are breathing all those spores in. Breathing in spores can cause many health problems. If you have intake air coming into the room. The way you have it set up you are blowing spores out of the room and into your house. If you are growing in your house.

You don't want the fan blowing back into the room you want it exhausting out of the room. Then you want a circulation fan moving the air around in the room but not blowing on the mushrooms...



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OfflineSHROOMSISAY01M
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Re: Help finding cause of oyster mutations [Re: SHROOMSISAY01]
    #26353110 - 11/30/19 03:47 AM (4 years, 1 month ago)

I am sorry I thought this was a different thread. Your mushrooms do not look like you have a lot of co2 in the room. They would have longer stipes. Like the person has that I thought I was answering.


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Offlinemariapilz
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Re: Help finding cause of oyster mutations [Re: filyep]
    #26353153 - 11/30/19 05:06 AM (4 years, 1 month ago)

Quote:

filyep said:
So I dropped humidity to 90% and in this time I have fruited Elm and phoenix. They both grew with the same mutations.

I talked to a supplier and they said that it could be from spores on the caps from other the other mushroom species I am growing.

I have a return air from the outlet diverted back to the room to circulate the air so this could be the cause of the increased spore load.

Anyone else heard of spores landing on the caps of mushrooms and causing mutations?



no never heard. I understand it correctly ... it is believed that the spores of your mushrooms land on the caps and cause the problems?

It is not really the environmental conditions in which one of your spores wants to germinate. I think. And besides, would not just grow the mycelium?

but good. your supplier may know.


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Offlinefilyep
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Re: Help finding cause of oyster mutations [Re: mariapilz]
    #26353182 - 11/30/19 05:51 AM (4 years, 1 month ago)

Quote:

SHROOMSISAY01 said:
I am sorry I thought this was a different thread. Your mushrooms do not look like you have a lot of co2 in the room. They would have longer stipes. Like the person has that I thought I was answering.




Haha nice one. I run my exhaust like your diagrams 24/7 the only difference is I divert some to act a recirculation fan so yes I am keeping some spores in but most will be exhausted. I will put a filter on the return to see if a lot is coming through.


Quote:

mariapilz said:

no never heard. I understand it correctly ... it is believed that the spores of your mushrooms land on the caps and cause the problems?

It is not really the environmental conditions in which one of your spores wants to germinate. I think. And besides, would not just grow the mycelium?

but good. your supplier may know.




Yeah I would have thought that spores landing on a mushroom cap would grow mycelium. They said some growers end up with separate rooms to combat this.

I have run this room with multiple oyster species before with no problem so maybe it is the lions mane spores doing it.


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Offlinemariapilz
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Re: Help finding cause of oyster mutations [Re: filyep]
    #26354164 - 11/30/19 04:17 PM (4 years, 1 month ago)

Quote:

filyep said:
Yeah I would have thought that spores landing on a mushroom cap would grow mycelium. They said some growers end up with separate rooms to combat this.

I have run this room with multiple oyster species before with no problem so maybe it is the lions mane spores doing it.




Interesting. I often grow different varieties in a room. Currently aegerita agrocybe and king oyster. I also had lions mane with kings in the room ... no problems. ...
But honestly guys. A lion's mane is ideally harvested long before the spore is thrown. Like the others too. In mushrooms that grow in tufts, it can happen that the most mature throw spores, but then you have to reap.

Separate rooms would be a good idea but luxury for me.


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Offlinefilyep
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Re: Help finding cause of oyster mutations [Re: mariapilz]
    #26367339 - 12/07/19 04:43 PM (4 years, 1 month ago)

Ok so bit of an update.

Still getting the mutations not as bad on all four species of Oyster mushroom. No lions mane fruiting anymore.

I've done some research and it appears that it could be what they call rosecomb mutation. Basically when the mushroom or mycelium (I think) is exposed to hydrocarbons.

Here's a link.
Link


Still doesn't explain the source. My inlet for air is inside the shed. I haven't been spraying anything around. I clean the room with bleach and add h202 to the humidifier reservoir.

I did have a hot plate and a power supply go smokey in the shed at one point so maybe that was the cause?


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