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OfflineBogiesmoke
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Registered: 01/13/13
Posts: 21
Last seen: 10 years, 2 months
Yellow on most cakes, contaminated?
    #18854889 - 09/17/13 06:44 PM (10 years, 5 months ago)

Some cakes are showing this golden color on small areas, mostly on the upper edges. Is this contamination? I just plucked a nice big one on a cake that had small signs of it. The pic shows the cake with the largest area of the color. Hope detail is ok. Please advise what to do as I have eight cakes including this one in a shotgun. Throw the mushroom away? Throw all the cakes away? They are all on second flush and most cakes moving slowly. it's been a week since second dunk.

I posted this in the wrong forum earlier . . . Didn't realize there was a contamination forum. Thanks everybody, pretty much a beginner.



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InvisibleGretchenmeister
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Registered: 07/23/05
Posts: 1,032
Loc: From the Stars
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Re: Yellow on most cakes, contaminated? [Re: Bogiesmoke]
    #18855332 - 09/17/13 08:22 PM (10 years, 5 months ago)

I see the circular patch of rusty looking slime like material colonizing the top of the cake. Is there any odor?  Also, please invest in a box of latex or nitrile gloves :P


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OfflineMosey3012
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Re: Yellow on most cakes, contaminated? [Re: Gretchenmeister]
    #18863258 - 09/19/13 02:12 PM (10 years, 5 months ago)

Ive made several posts on this exact same issue in the past with little 2 no real replies... Either people dont know why they start to yellow or dont care to explain it anyway... Last time I checked there wasn't much information on it anywhere either... Which is weird because its sometimes that has happened to me several times...

What I have managed to get out of the more experienced cultivators/ other similar posts is that mycelium apparently starts to turn yellow like that when it starts to die... Im not sure if this is entirely true though...

All of my SGFC's or mono's maintained 95%+ RH, in most cases it was always 99%+ however im providing a +/- 5% variation here for the sake of discussion. What I noticed was that my mono's would hold out far longer before starting to show any yellow type spotting while any shot gun type builds would produce this faster... My only assumption here is that there's 2 much airflow going on and that this surface myc is drying out and dying.

My only other honest guess would be that it is due to a bacterial infection.

Ive had trays start going yellow like that and still shoot up a literal forest of mushrooms, even producing a 2nd flush at that... So why area's of a cake or tray would up and "die" while areas right next to it are shooting up pins I wish I could tell you...

These are just my thoughts though, u can check some of my older posts to see what others have said. Lemme know if u come up with anything. Best of luck!


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"Each of these lives is the right one! Every path is the right path. Everything could have been anything else and it would have just as much meaning"



"All that is gold does not glitter, Not all those who wander are lost"



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OfflineBogiesmoke
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Registered: 01/13/13
Posts: 21
Last seen: 10 years, 2 months
Re: Yellow on most cakes, contaminated? [Re: Mosey3012]
    #18863653 - 09/19/13 04:13 PM (10 years, 5 months ago)

Thanks a lot Mosey, you expressed my frustrations exactly. I actually posted this twice in the cultivation forum before I realized there was a contamination forum, and no one replied to those posts. The yellow does not seem to be spreading and that area smells like normal myc (not sure if bacteria smells differently or not). I've had humidity at 98% consistently for over three weeks now.  I've read mixed reviews on fanning and misting when using the shotgun method, but I've been fanning and misting three to four times a day. All I read about is how fresh air is key. If I should be reducing that, please advise anyone.

I had a giant mushroom growing on the other side of the cake shown above and I just picked it today. Unless someone tells me otherwise or the yellow starts spreading to other cakes and starts looking worse, I plan on consuming them.

Thanks again for taking the time Mosey.


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OfflineMosey3012
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Re: Yellow on most cakes, contaminated? [Re: Bogiesmoke]
    #18863951 - 09/19/13 05:05 PM (10 years, 5 months ago)

Theyre safe to consume. Check these out





I've done multiple grows where this has occurred and amongst myself and a few friends we have gobbled them all up with zero incident. In fact, funny enough most of the people who experience slight stomach discomfort when eating mushrooms in general reported back that they had none at all with these in particular... Is there any relation to this? I doubt it... but it definitely made me feel a lot more comfortable with the idea of eating them.

As a side note, we are generally advised to discard anything that shows signs of contamination (mold or bacterial) however from what I've gathered this is usually because things that show early signs of this generally wont fruit at all, if any (thus wasting your time). I've put icey white trays into their FC and watched them pin while both that lovely yellowing started to occur, along with (a few days later) our jolly green friend tric.

In situations like these I've simply moved these particular cakes/trays into their own areas, allowed the fruits to mature, and THEN either tossed them or threw them into a make shift outdoor patch to see if anything else would come of them (which has worked out great as well).

I guess because we see bad stuff growing on the nutritious substrate our mushrooms are growing on 2 we assume that it a makes them bad however nothing aside from the nutrients itself pass into or over to the mushroom (I do not claim this as fact, only attempting to use general logic). It simply wouldn't grow if there was a bacterial infection or some invader type mold stunting what its genetics are telling it to do... Make sense? If anything its leeching from the nutrients the mushroom is attempting to use to and u get a lower potency/size mushroom.

So the worst that I see it getting, in the case of tric growing close by, would be a mushroom that has mold spores on it (this was my main concern as that could potentially make someone sick as well). The trays Ive had that tric'd up towards the end I picked and dried the fruits as usual and had no issues with them after consumption.

I'm not by any means telling you that this is safe or okay to do, this is just me giving you my personal experience. I welcome anyone with more experience than I to advise you further or dismiss anything I've said here.

Mosey


--------------------

"Each of these lives is the right one! Every path is the right path. Everything could have been anything else and it would have just as much meaning"



"All that is gold does not glitter, Not all those who wander are lost"



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OfflineKizzle
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Re: Yellow on most cakes, contaminated? [Re: Mosey3012]
    #18868531 - 09/20/13 04:35 PM (10 years, 5 months ago)

Quote:

I've done multiple grows where this has occurred and amongst myself and a few friends we have gobbled them all up with zero incident. In fact, funny enough most of the people who experience slight stomach discomfort when eating mushrooms in general reported back that they had none at all with these in particular... Is there any relation to this? I doubt it... but it definitely made me feel a lot more comfortable with the idea of eating them.



Stomach discomfort is from eating raw mushrooms which the body has hard time trying to digest. It can be avoided by cooking the mushrooms or more commonly by making them into tea.


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OfflineForestBellows
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Registered: 05/22/13
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Re: Yellow on most cakes, contaminated? [Re: Kizzle]
    #18879057 - 09/23/13 02:11 AM (10 years, 5 months ago)

I don't know about that. I have been just as sick times that I made tea as times that I didn't. as far as the yellowing.. I'm curious too and have heard conflicting answers - that it is a response to bacteria, or that it is a normal metabolite thats not to worry about. So I would love if someone could weigh in definitively.


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OfflineSkysTheLimit
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Registered: 07/28/13
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Re: Yellow on most cakes, contaminated? [Re: ForestBellows]
    #18886391 - 09/24/13 07:39 PM (10 years, 4 months ago)

Oh thanks for clearing on the yellowing


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OfflineKizzle
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Re: Yellow on most cakes, contaminated? [Re: ForestBellows]
    #18889322 - 09/25/13 01:33 PM (10 years, 4 months ago)

The yellowing is a response to environmental conditions, usually from low humidity or the substrate drying out. There are other kinds of yellow discoloration that are related to bacteria or other contaminants, mostly you'll see that during the colonization phase. And of course there's yellow mold but that will have a separate mycelium.


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Edited by Kizzle (09/25/13 01:39 PM)


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