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OfflineTira
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Do I need to sterilize sawdust for fruiting?
    #23827774 - 11/13/16 01:49 AM (7 years, 2 months ago)

I've been reading Growing Gourmet and Medicinal Mushrooms and I've seen that Stamets reccomended that enriched sawdust should be sterilized.  Is pasteurization not enough for sawdust?

If it is supplemantation of bran which causes the neccessity of sterilization, can't I use alfalfa or something other that wouldn't require sterilization?


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Edited by Tira (11/13/16 01:51 AM)


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OfflineFerather
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Re: Do I need to sterilize sawdust for fruiting? [Re: Tira]
    #23828192 - 11/13/16 07:59 AM (7 years, 2 months ago)

You can indeed. Alfalfa, straw, tea leaves, coffee waste, some fertilizers and so on.


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OfflineQuadman
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Re: Do I need to sterilize sawdust for fruiting? [Re: Ferather]
    #23828309 - 11/13/16 08:56 AM (7 years, 2 months ago)

General rule is if it is supplemented it needs sterilized. Alfalfa would in my opinion be worse than bran. Alfalfa has 17-24% protein. Bran has approx.12%. Protein.


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OfflineFerather
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Re: Do I need to sterilize sawdust for fruiting? [Re: Quadman]
    #23828371 - 11/13/16 09:20 AM (7 years, 2 months ago)

Which is why alfalfa is a good idea, protein counts as a source for nitrates as well as other things.
20% alfalfa has a big impact to yield and BE, see here. No sterilization only pasteurization.


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InvisibleMycolorado
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Re: Do I need to sterilize sawdust for fruiting? [Re: Quadman]
    #23828373 - 11/13/16 09:21 AM (7 years, 2 months ago)

Eh...I've pasteurized alfalfa as sup several times with no issues.  I would say bran is going to require sterilization before alfalfa.  Bran is the outer material of the wheat grain so that's prolly gonna have more endospores, etc., than alfalfa.  Not sure if that's good logic but based on experience, I've had bran contam quickly when not sterilized.


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OfflineFerather
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Re: Do I need to sterilize sawdust for fruiting? [Re: Mycolorado]
    #23828381 - 11/13/16 09:24 AM (7 years, 2 months ago)

Thats the reason I added that link to my pocket guide  :smile:


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Growing mushrooms, general guide and information (Ferather's Journal), https://ibb.co/rG3rML2

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OfflineTira
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Re: Do I need to sterilize sawdust for fruiting? [Re: Ferather]
    #23828428 - 11/13/16 09:41 AM (7 years, 2 months ago)

So sawdust alone is ok to pasteurize, it's the supplementation that creates the requirement of sterilization?


--------------------
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The Basics              AMU Teks

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InvisibleMycolorado
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Re: Do I need to sterilize sawdust for fruiting? [Re: Tira]
    #23828451 - 11/13/16 09:50 AM (7 years, 2 months ago)

Yes and no.  It depends on the sup.  Bran = sterilize.  Alfalfa = pasteurize.  Sawdust (with no sup) can be inoculated without pasteurization as long as it's spawned heavily.  There's a video on here somewhere. 


Edited by Mycolorado (11/13/16 07:31 PM)


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OfflineFerather
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Re: Do I need to sterilize sawdust for fruiting? [Re: Mycolorado]
    #23828468 - 11/13/16 09:56 AM (7 years, 2 months ago)

There are several types of wood loving (broad term) bacteria, however they are much slower than mycelium.
For the better part you would need to add the bacteria to the wood, they dwell in natural soil.

When it comes to starch or sugar, bacteria love it, and they are hard and fast.
Grains (starch) grow from the ground, and come already infected.

Grains are also easily infected from open air.


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Growing mushrooms, general guide and information (Ferather's Journal), https://ibb.co/rG3rML2

https://www.shroomery.org/forums/showflat.php/Number/27857366#27857366

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OfflineQuadman
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Re: Do I need to sterilize sawdust for fruiting? [Re: Ferather]
    #23828641 - 11/13/16 10:47 AM (7 years, 2 months ago)

:whiteflag: I'll concede,because I have not done it. I will say most of this debate depends on the mushroom and the culture you have. Slow growing mycelium allows contamination, where a fast strong mycelium out grows or over takes the contaminates. Even then contaminates can be present and disrupt your yields.


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OfflineTira
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Registered: 11/20/10
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Re: Do I need to sterilize sawdust for fruiting? [Re: Quadman]
    #23828858 - 11/13/16 11:53 AM (7 years, 2 months ago)

Ok, got it.  So, one last question; why do we enrich sawdust by adding supplements to it.  I know the goal is to increase yield but for example, in GGMM, Stamets never mentions using sawdust alone, but he mentions using straw on its own.  Is straw more nutritious than sawdust?


--------------------
Useful Links for Beginners

The Basics              AMU Teks

Frank''s Teks          Agar

Noob Forum Reccomended Teks

Agar for guaranteed spawn,
Proper pasteurization for guaranteed substrate.


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OfflineFerather
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Re: Do I need to sterilize sawdust for fruiting? [Re: Tira]
    #23829550 - 11/13/16 03:16 PM (7 years, 2 months ago)

Wood has a higher ratio of energy to nutrients, its packed with plant fiber.
Straw is more balanced, and limited in inhibitory resins-oils.

Allowing for full yield, enriched wood is better.


--------------------
                   

Growing mushrooms, general guide and information (Ferather's Journal), https://ibb.co/rG3rML2

https://www.shroomery.org/forums/showflat.php/Number/27857366#27857366

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Offlinedrake89
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Re: Do I need to sterilize sawdust for fruiting? [Re: Tira]
    #23830004 - 11/13/16 06:07 PM (7 years, 2 months ago)

Quote:

Tira said:
Is straw more nutritious than sawdust?



kind of.  it has a higher ratio of cellulose:lignin which oysters really like.  it's also less prone to contamination than sawdust for a few reasons.

we use supplements in sawdust to increase available N (protein), mushrooms are high in protein.  Most mushrooms benefit greatly from increased protein in a sawdust mix.  Eryngii and other oysters benefiting the most (up to 50% supplements), shiitake and most are fine with 20%, reishi don't seem to benefit all that much.


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OfflineTira
I'm a teapot


Registered: 11/20/10
Posts: 1,202
Loc: Turkey
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Re: Do I need to sterilize sawdust for fruiting? [Re: drake89]
    #23830961 - 11/14/16 12:37 AM (7 years, 2 months ago)

You all have been really helpful, thank you all for your answers .)


--------------------
Useful Links for Beginners

The Basics              AMU Teks

Frank''s Teks          Agar

Noob Forum Reccomended Teks

Agar for guaranteed spawn,
Proper pasteurization for guaranteed substrate.


Extras: Filter Print Post Top
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