Adding gypsum after pasteurisation - Mushroom Cultivation

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spiz
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Registered: 05/17/11
Posts: 118
Loc: Australia

Last seen: 1 year, 1 month

Adding gypsum after pasteurisation

#25144132 - 04/17/18 04:20 AM (4 years, 9 months ago)

So basically I was following Franks monotub tek and when making my coir substrate I didn't add any gypsum before pasteurising it.

Would I be able to just add it afterwards or is it best to just go without?

Spawn to Sub ratio is 1:2 if that helps

Thanks!

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TheMadHatter420
Trusted Farmer

Registered: 10/13/16
Posts: 12,927

Re: Adding gypsum after pasteurisation

[Re: spiz]

1
#25144156 - 04/17/18 04:28 AM (4 years, 9 months ago)

Just skip it. There is no evidence proving it helps, nor that it doesn't. It is all based on peoples experiences, and many growers don't use it at all.

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topsykretts
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Registered: 07/19/14
Posts: 384
Last seen: 7 months, 1 day

Re: Adding gypsum after pasteurisation

[Re: TheMadHatter420]
#25144391 - 04/17/18 06:09 AM (4 years, 9 months ago)

What about adding vermiculite to pasteurized cow poo after the fact? Is that unwise?

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hamloaf
Loaf of Fam.

Registered: 12/24/09
Posts: 20,192
Loc: Oklahoma.

Last seen: 8 months, 22 days

Re: Adding gypsum after pasteurisation

[Re: topsykretts]
#25144461 - 04/17/18 06:45 AM (4 years, 9 months ago)

Adding gypsum to bulk substrate after pasteurization won't work, because once substrate is hydrated gypsum won't be able to be evenly distributed through out bulk substrate.

Adding vermiculite to a bulk substrate after pasteurization will ruin hydration level of bulk substrate, so don't do that either. Mix all materials intended for use as bulk substrate together dry, bring to field capacity, then pasteurize.

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