http://forestry.ca.uky.edu/sites/forestry.ca.uky.edu/files/for82.pdf
I wish someone would spell out the Birds and Bees of mushroom logs for me - but the problem is that the mycologists are too busy trying to grow the mycelium and sell it, etc. to answer "stupid questions."
I didn't know this. I figured a dried out log - if soaked in a tank - is going to get filled with water eventually. It's just physics right?
When logs quit producing early, most often it's because the log dried out too much at some point in its lifespan.
https://practicalselfreliance.com/grow-shiitake-mushrooms/
So that implies that it's GAME OVER if the log dries out completely - meaning it kills the mycelium and THAT'S why it "stops absorbing water."
To keep your mycelium alive simply make a hardwood chip bed out in the garden, chop your log in half lengthwise, and lay the halves face down in and covered by a layer of fresh HARDWOOD chips or sawdust (not evergreen wood and not fruit tree weed ..hardwood only!) Prepare your woodchip bed in a cool, shady location out of the wind and direct sun, with water nearby. Your mushroom will colonize the fresh woodchip bed and grow more mushrooms right on the ground, so you can keep your mushroom alive FOREVER by giving your mushroom bed some fresh hardwood chips or sawdust every year or so.
OR the log just got all eaten up - and that's why it stopped producing shrooms....
hmm.
Logs as small as 3 inches in diameter can be used, but they will deteriorate swiftly and dry out too easily, killing the mycelium, the unseen network of filaments that compose the vegetative part of the fungus that penetrates the wood.
OK I gotta go soak my logs.
on hot summer days you may find that cracks appear on the logs due to drying out. this will be regulated by a warm summer rain or occasional but vigourous watering from a watering can,. Moisture fluctuations do not damage the mushroom logs.
Shiitake logs in the pile: It is important that the mushroom logs do not dry out but they get enough fresh air, i.e. you should occasionally open up the pile for ventilation and check that the logs have not dried out! sometimes the moisture level in the pile decreases steadily and drops below a minimum level. for this reason you should only leave the logs in the pile if you are sure you will not forget them!
http://www.shiitake-shop.de/faq/faq.html
So i threw this piece of dried cordyceps agar into a fresh agar dish, and 5 days later, it has come back to life. Personally I didn't think that it would, but I did know that mycelium can be freeze dried and come back to life, so I thought this might have a chance. Dried mycelium can be revived, and your old dried out substrates are just waiting to find some moisture to come back to life
https://www.shroomology.org/forums/topic/1695-is-dried-out-mycelium-dead/
WOW - amazing. But is it really true?
Spores are hardy. They can survive for years on end.
OK so the spores are UNgerminated hyphae. Not the same as germinated mycelium.
if you let the mycelium dry out or the humidity level get too low then nothing will happen.
I understand Nothing will happen but is it DEAD or can it be REVIVED?
Actually you can use dried mycelium, it will start growing again.
Really? Or is that just an interwebs rumor?
So to answer your question... you cant DRY mycelium and expect it to come back, UNLESS there are portion that have not completely DRIED OUT or if there are any possible spores on the myc you can get those to germinate.
Right so it was just an interwebs rumor.
Effects of Drying and Rehydration on Mycelia of the Mosquito Pathogenic Fungi Culicinomyces clavisporus and Tolypocladium cylindrosporum
https://www.jstor.org/stable/3760087?seq=1
Time to turn to academia.
interesting - so essentially they say it CAN be rehydrated but it barely survives...
fascinating indeed.
Yes, dried mushrooms can be used to grow other mushrooms. As I mentioned earlier, these vegetables require spore, which can be acquired from dried mushrooms. However, such is not the case every time. If the fungi have been dried for too long, or at high temperatures like that of 160 degrees Fahrenheit then the spores have died and can no longer harbor the growth of a mushroom.
Therefore, to grow the fungi this way, you must use spores from a mushroom that has not been dried for too long or at high temperatures. Only those who have been dried a specific way can create the spores needed to grow the mushroom vegetable.
why does he call them vegetables?
Growing these fungi is so straightforward and much like that of growing any other fruits or vegetables.
Hilarious - the term is being used metaphorically.
ok
http://www.fungal-futures.com/all-you-want-to-know-about-mycelium/
Too much drought-like conditions can prevent mushroom growth.
is "preventing growth" the same thing is DEAD mycelium? Notice this is not answered.
So no that is not ALL that I wanted to know.
The temperature in your substrate can become higher than the air temperature in the room. If your fruiting room’s temperature is lower than the substrate temperature, the substrate will cook mycelium. If your mycelium gets good due to thermogenesis, it dies. Try to maintain a little higher than the optimum temperature.
http://www.fungal-futures.com/common-mistakes-to-avoid-in-mushroom-cultivation/
That sounds quite sensitive. That's not in logs though.
thereafter dehydrated to a moisture content of less than 50% by weight to deactivate the further growth of mycelia tissue; and then stored. The stored dehydrated mycelium composite is further processed by rehydrating to reactivate the mycelium and to initiate growth of at least one fruiting body.
So.. this is a PATENT
And it was GRANTED - four years ago.
so long as the cell walls are intact the mycelium is still viable. fast and intense drying methods typically end up with all of the cell walls damaged. if dried slow and gentle many of the cells will avoid the damage.
https://mycotopia.net/topic/88159-viabiility-of-dried-mycelia/
So it really does "come back to life"?
Oh I get it - the rehydration process is what damages the cells.
a 2nd patent to rehydrate mycelium
- ]
Thereafter, the coherent mass may be dehydrated to a moisture content of from 0 to 30%, at a temperature greater than 150° F and for a time sufficient to permanently deactivate the mycelium.
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[0012]
In accordance with the method, dehydrated blocks and bricks can be formed which can be milled, cut, or otherwise transformed into new shapes. These shapes when re-hydrated will grow fresh exterior skins, and, when placed in contact, will self adhere to each other.
A growable Glue - Mycelium vid
https://ecovativedesign.com/mycocomposite
Microbes, Mycelium & Magic | Eben Bayer | HT Summit 2017
MycoFlex™ is able to create everything from lightweight insulating lofts for gloves to high- performance foams in footwear
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