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 odawg
 
Registered: 10/31/17
Posts: 80
Loc: France
Last seen: 3 years, 1 month
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 Lime pasteurization of sawdust or wheat straw 
#24749365 - 10/31/17 08:18 AM (6 years, 5 months ago) |
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Hi
I'm based in France and I'm experimenting various technics for growing gourmet mushrooms.
I already grew yellow oysters and phoenix oysters on straw with good success.
I am going to start growing Shiitake and would like if some of you have already used the lime bath treatment technic on sawdust or woodchips.
I know that this treatment works pretty well on straw but I haven't found any documentation about using this method on sawdust.
Please advise
Thanks in advance
Edited by odawg (03/16/18 08:19 AM)
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Quadman
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Registered: 04/23/16
Posts: 2,529
Loc: IL 
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Re: Lime Bath Treatment of Sawdust or woodchips [Re: odawg]
#24749837 - 10/31/17 11:54 AM (6 years, 5 months ago) |
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Most growers use pelleted sawdust which they heat pasteurize or supplement sawdust which needs sterilized.
Lime bath of sawdust would be difficult to get moisture correct afterwards.
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Edited by Quadman (10/31/17 11:56 AM)
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odawg
Registered: 10/31/17
Posts: 80
Loc: France
Last seen: 3 years, 1 month
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Re: Lime Bath Treatment of Sawdust or woodchips [Re: Quadman]
#24754884 - 11/02/17 03:46 PM (6 years, 5 months ago) |
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Thank you for your reply.
I'll try to see if it is possible anyway. And I will let you know the results
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Drayce
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Registered: 10/07/17
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Re: Lime Bath Treatment of Sawdust or woodchips [Re: odawg]
#24755824 - 11/02/17 10:02 PM (6 years, 5 months ago) |
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^^^ Please do. It's a pain to Pressure Cook the sawdust and takes time. I wanted to try lime, but I'm new to this and did not want to mess it up.^^^
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MK Cordyceps
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Registered: 04/04/15
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Re: Lime Bath Treatment of Sawdust or woodchips [Re: odawg]
#24773897 - 11/10/17 02:20 PM (6 years, 5 months ago) |
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Dilute 2 grams of hydrated lime to 1 liter of water. Make as much as you need and mix well until dissolved. Use this solution to hydrate your fuel pellets or sawdust. No need to soak and drain. The mycelium will grow fine in the high ph sawdust. Just make sure you get the right hydrated lime.
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odawg
Registered: 10/31/17
Posts: 80
Loc: France
Last seen: 3 years, 1 month
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Re: Lime Bath Treatment of Sawdust or woodchips [Re: MK Cordyceps]
#24788824 - 11/17/17 07:52 AM (6 years, 4 months ago) |
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I started 1st lime bath on organic straw with P. ostreatus.
The spawn is running well so far...
I'll try lime bath on sawdust for the next prod.
Edited by odawg (11/17/17 07:53 AM)
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MK Cordyceps
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Re: Lime Bath Treatment of Sawdust or woodchips [Re: odawg]
#24800687 - 11/22/17 07:31 PM (6 years, 4 months ago) |
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Looks good!
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odawg
Registered: 10/31/17
Posts: 80
Loc: France
Last seen: 3 years, 1 month
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Re: Lime Bath Treatment of Sawdust or woodchips [Re: MK Cordyceps]
#24803271 - 11/24/17 02:20 AM (6 years, 4 months ago) |
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I think spawn run is good enough now.
I'm gonna initiate fruiting (cold shock, fresh air, high RH).
I'll post more pics in some days when oysters primordia will start pining (
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odawg
Registered: 10/31/17
Posts: 80
Loc: France
Last seen: 3 years, 1 month
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Re: Lime Bath Treatment of Sawdust or woodchips [Re: odawg]
#24818372 - 12/01/17 06:48 AM (6 years, 4 months ago) |
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A bag of P. pulmonarius started fruiting 4 days ago :
And 2 days ago, a bag of P. ostreatus started pining :
No trace of contamination.
Lime bath treatment seems working pretty well so far.
In few weeks I will try to use this substract treatment on supplemented straw and on sawdust, with Oysters spawn, which looks very aggressive and grow really fast.
Stay tuned !
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odawg
Registered: 10/31/17
Posts: 80
Loc: France
Last seen: 3 years, 1 month
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Re: Lime Bath Treatment of Sawdust or wheat straw [Re: odawg]
#24831229 - 12/07/17 03:34 AM (6 years, 4 months ago) |
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More pics of my P. pleurotus ostreatus growing on wheat straw substrate treated with hydrated lime.
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Quadman
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Re: Lime Bath Treatment of Sawdust or wheat straw [Re: odawg]
#24831281 - 12/07/17 05:11 AM (6 years, 4 months ago) |
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Nice color there Odawg.
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frog48
Peasant
Registered: 03/08/13
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Loc: France 
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Re: Lime Bath Treatment of Sawdust or wheat straw [Re: Quadman]
#24831327 - 12/07/17 06:15 AM (6 years, 4 months ago) |
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Did you know that lime is not allowed in organic grows in France? Just for your information. Just saw that you use organic straw. Oysters are nikkel by the way!
Edited by frog48 (12/07/17 06:19 AM)
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Quadman
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Re: Lime Bath Treatment of Sawdust or wheat straw [Re: frog48]
#24831384 - 12/07/17 07:27 AM (6 years, 4 months ago) |
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Lime is a mineral, so technically it s inorganic.  That's just messed up.
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frog48
Peasant
Registered: 03/08/13
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Re: Lime Bath Treatment of Sawdust or wheat straw [Re: Quadman]
#24832011 - 12/07/17 01:23 PM (6 years, 4 months ago) |
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I know, it's not me but the european council that decided that. To my knowledge lime is forbidden in all organic grows everywhere in europe
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odawg
Registered: 10/31/17
Posts: 80
Loc: France
Last seen: 3 years, 1 month
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Re: Lime Bath Treatment of Sawdust or wheat straw [Re: frog48]
#24833280 - 12/08/17 03:51 AM (6 years, 4 months ago) |
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When I will start selling my gourmet mushrooms, I will simply explain that the substrate is made of organic straw... that's enough.
I know that Lime is forbidden in all kind of organic culture, which is stupid because they use instead microalga like Lithothamne which are collected by tons on the britain shore ; it simply destroy biotope that earth made thousand years to build...
Organic is not always "better". Stupid European commission rules !
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odawg
Registered: 10/31/17
Posts: 80
Loc: France
Last seen: 3 years, 1 month
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Re: Lime Bath Treatment of Sawdust or wheat straw [Re: Quadman]
#24833283 - 12/08/17 03:53 AM (6 years, 4 months ago) |
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Quote:
Quadman said:
Nice color there Odawg.
Thanks. I like this colour too.
I avoid to put too much light because I don't want to have white or "creamy" colour P. ostreatus
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odawg
Registered: 10/31/17
Posts: 80
Loc: France
Last seen: 3 years, 1 month
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Re: Lime Bath Treatment of Sawdust or wheat straw [Re: odawg]
#24841284 - 12/12/17 04:00 AM (6 years, 4 months ago) |
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Nice flush for a non supplemented substrate
On another bag, plenty primordia already show for a coming 2nd flush
I will calculate BE once all my bags will be "exhausted".
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Ferather
Mycological
Registered: 03/19/15
Posts: 6,325
Loc: United Kingdom 
Last seen: 1 year, 5 months
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 Re: Lime Bath Treatment of Sawdust or woodchips [Re: MK Cordyceps]
#24841519 - 12/12/17 09:03 AM (6 years, 4 months ago) |
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Quote:
MK Cordyceps said:
Dilute 2 grams of hydrated lime to 1 liter of water. Make as much as you need and mix well until dissolved. Use this solution to hydrate your fuel pellets or sawdust. No need to soak and drain. The mycelium will grow fine in the high ph sawdust. Just make sure you get the right hydrated lime.
Go for pure CaCO3, no magnesium, and yes make hydration water, I've suggested this for a long time now.
Nice thread and images.
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odawg
Registered: 10/31/17
Posts: 80
Loc: France
Last seen: 3 years, 1 month
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Re: Lime Bath Treatment of Sawdust or woodchips [Re: Ferather]
#24843257 - 12/13/17 04:41 AM (6 years, 4 months ago) |
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Quote:
Ferather said:
Quote:
MK Cordyceps said:
Dilute 2 grams of hydrated lime to 1 liter of water. Make as much as you need and mix well until dissolved. Use this solution to hydrate your fuel pellets or sawdust. No need to soak and drain. The mycelium will grow fine in the high ph sawdust. Just make sure you get the right hydrated lime.
Go for pure CaCO3, no magnesium, and yes make hydration water, I've suggested this for a long time now.
Nice thread and images.
Thank you for your message.
Whereas lime worked very well on straw with various Pleurotus species spawn, it looks like Shiitake spawn has some difficulties to grow on lime treated straw.
I inoculated all bags at the same time (on Nov 12), I will harvest soon a 2nd flush of oysters whereas my shiitake bag looks weird and is far from full colonization...
In comparison, my other shiitake bags (50% sawdust 50% straw) look much better :
Any idea why this spawn got so much difficulties to grow ?
Straw looks maybe too wet ? Maybe it get contaminated ?
I don't know what to do with it...
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Ferather
Mycological
Registered: 03/19/15
Posts: 6,325
Loc: United Kingdom
Last seen: 1 year, 5 months
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Re: Lime Bath Treatment of Sawdust or woodchips [Re: odawg] 1
#24843329 - 12/13/17 06:28 AM (6 years, 4 months ago) |
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Lime is CaCO3, even hydrated lime turns back to CaCO3 eventually.
There are several cellulase enzymes (different pH).
Alkaline cellulase: 7.2-8.5.
Neutral cellulase: 6.0-8.0.
Hybrid cellulase: 4.5-7.0.
Acid cellulase: 4.5-5.0.
Oyster's produce a few types, maybe not Shiitake.
It probably uses acid or hybrid cellulase.
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