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InvisibleCreonAntigone
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Registered: 05/30/21
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Sterilized/Pasteurized compost
    #27812863 - 06/10/22 03:06 AM (2 years, 7 months ago)

Lacking any coir, the best option for me for substrate would seem to be for me to pasteurize some of this compost I have in abundance in my garden. I have read that pasteurization was vital to the early cultivation history of button mushrooms, with compost heat-treated to remove the competing microbes.

Now I would assume that using this stuff has a similar principle behind it as manure. How would I best prepare it?

I have a few options really...
1. Sterilize: I could PC large bags of this hours at a time, if it would really be best to kill every competitor. But most people do not sterilize their substrate
2. Pasteurize: I could use some simple techniques, such as the bucket tek people use for coir, but I am not sure if that'd be enough for this, as it's live compost and contains many things including insects.

Another option could be to focus my cultivation efforts outdoors at the moment and lay out spawn in an outdoor bed. I may do this anyway, regardless of whether I prepare the compost for indoor substrates.

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OfflineJW123
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Registered: 01/17/22
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Re: Sterilized/Pasteurized compost [Re: CreonAntigone]
    #27812871 - 06/10/22 03:37 AM (2 years, 7 months ago)

I believe most people don't sterilize coir and verm because it is not very nutritious and doesn't contaminate easily. I think the compost probably would. I mainly just wanted to say outdoor beds are pretty easy, and can give some nice returns.

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OfflineBobbins
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Registered: 02/02/22
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Last seen: 2 years, 3 months
Re: Sterilized/Pasteurized compost [Re: JW123]
    #27812918 - 06/10/22 05:19 AM (2 years, 7 months ago)

If your substrate has any nutrition then it might contaminate as that nutrition may support the unwanted nasties we are always keeping at bay, and the spores for these nasties are floating around in the air so will certainly end up in your substrate when you spawn... Sterilising won't help with this if you're thinking of doing a tub at least, maybe there are other methods more resilient though, I'm not familiar.


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DeALeRsHrOoMs

Edited by Bobbins (06/10/22 05:20 AM)

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InvisiblemushboyMDiscord
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Registered: 04/24/05
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Re: Sterilized/Pasteurized compost [Re: Bobbins] * 4
    #27812975 - 06/10/22 06:25 AM (2 years, 7 months ago)

You pasteurize composts. Bucket tel isn’t pasteurization.

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InvisibleLotKid
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Registered: 01/07/17
Posts: 8,169
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Re: Sterilized/Pasteurized compost [Re: mushboy] * 1
    #27813042 - 06/10/22 07:40 AM (2 years, 7 months ago)

:whathesaid:


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:mushroom2: LotKid's PE Tips        :shpongle:    LotKid's Chocolates :mushroom2:
:dancingbear: :dancingbear:

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InvisibleMysticMycologist
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Registered: 10/14/21
Posts: 1,755
Loc: seeking samadhi
Re: Sterilized/Pasteurized compost [Re: LotKid] * 1
    #27813236 - 06/10/22 10:36 AM (2 years, 7 months ago)

I use an instapot with a “sous vide” setting to pasteurize straw, compost, and other risky substrates. If you half ass it, it will get nasty fast. Especially straw IME.


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InvisibleCreonAntigone
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Registered: 05/30/21
Posts: 3,374
Re: Sterilized/Pasteurized compost [Re: MysticMycologist]
    #27813304 - 06/10/22 11:48 AM (2 years, 7 months ago)

Quote:

MysticMycologist said:
I use an instapot with a “sous vide” setting to pasteurize straw, compost, and other risky substrates. If you half ass it, it will get nasty fast. Especially straw IME.




So then how long would you cook live compost to pasteurize it in your instanpot? I assume I can do the same in a standard pc although it'd be annoying to clean.

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InvisibleMysticMycologist
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Registered: 10/14/21
Posts: 1,755
Loc: seeking samadhi
Re: Sterilized/Pasteurized compost [Re: CreonAntigone]
    #27813492 - 06/10/22 02:45 PM (2 years, 7 months ago)

I do 8 hours at 180f for most things. I’m not that experienced with pasteurizing manure, but I do a lot of woodchips and have dabbled with bagged compost and straw. The sous vide seems to make it really easy.


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Two eyes to look, One eye to see.
Prying open my third eye

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