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Offlinec_mathimatics
kaok
Registered: 05/23/03
Posts: 59
Last seen: 13 years, 5 months
Cold shocking trich (weird!)
    #1641884 - 06/18/03 11:37 AM (13 years, 8 months ago)

I know that trich doesn't die until about 160+ degrees F, so trying to fry the sh!t is pretty useless because your Mycelium will be long gone after 106ish... but what about cold shocking it? You can't freeze mycelium without using chemicals to keep the ice from slicing the cells open, but can you kill trich at like 40 degrees?

If not, will prolonged exposure (48+ hours, 2 weeks, 3 months?!) eventually kill trichoderma, or will it just come right back as soon as you reheat it? I know mycelium can hang out in those temperatures for years!

THX!


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OfflineMAIA
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Re: Cold shocking trich (weird!) [Re: c_mathimatics]
    #1642362 - 06/18/03 03:02 PM (13 years, 8 months ago)

Even if you could kill the mould with low temps, its spores would be ready to germinate as soon as the temperature goes up to a suitable level.

MAIA


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Offlinec_mathimatics
kaok
Registered: 05/23/03
Posts: 59
Last seen: 13 years, 5 months
Re: Cold shocking trich (weird!) [Re: MAIA]
    #1644367 - 06/19/03 12:30 PM (13 years, 8 months ago)

Great info, much appreciated!

My cat let me peek into her sekret lab and showed me that trich attacks the very cells of the mycelium... totally destroying the whiteness into a goo-y clear mess. It also cuts off the mycelium from being able to grow into the top and bottom layers of a casing if it's really bad. The stuff is hard-core! It takes over and squeezes the mycelium back to it's substrate, then just eats it away in severe cases!


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Offlinechineseguy
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Re: Cold shocking trich (weird!) [Re: MAIA]
    #1644721 - 06/19/03 02:21 PM (13 years, 8 months ago)

just out of curiosity, what is the life cycle of trichoderma?

it seems like it first develops as a small spot of very light mint-green then gradually spreads and gets darker until it is a very dark green, which i believe is when it sporulates. correct?

so if you nip it in the bud in the begining stages before it can produce spores, you wouldn't have as serious a problem, correct?


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Offlinec_mathimatics
kaok
Registered: 05/23/03
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Re: Cold shocking trich (weird!) [Re: chineseguy]
    #1644953 - 06/19/03 03:32 PM (13 years, 8 months ago)

Correct... it actually starts as a white "shaving cream"-like fluffy patch which eventually turns light green within' 2-3 days and turns dark green (sporulating) within 24 hours.

Of course, once you've seen dark green... they've gotten away!!! The spores themselves lose _much_ of their potency after 3-4 months if you have kept them from re-spawning.

So yes - if you take care of it before the dark green phase you are much more likely to prevent their rediculous spreading.


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Offlinechineseguy
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Re: Cold shocking trich (weird!) [Re: c_mathimatics]
    #1645081 - 06/19/03 04:20 PM (13 years, 8 months ago)

ive seen alot of cakes that looked like they were covered with clumps of shaving cream (which was actually fluffy white mycelium) and went on to be very healthy cakes becuase air exchange was optimal. are you sure this is the begining of trich or is this just a sign of very high RH, which in turn makes the cakes much more susceptible to trich?


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Offlinec_mathimatics
kaok
Registered: 05/23/03
Posts: 59
Last seen: 13 years, 5 months
Re: Cold shocking trich (weird!) [Re: chineseguy]
    #1645175 - 06/19/03 04:39 PM (13 years, 8 months ago)

Good to know - I was wondering if there was a healthy state of mycelium that had little bumpy cream-like growth.  I know for a fact what I saw was trich unfortunately, it spread out as new growth from where the trich was.  My cat lost everything due to trich :smile:  She's not even going to try again right now as the homestead was totally infected.


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