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White mark on the "cap" of one of my pins... what is it?


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#1 ss2matt

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Posted 12 January 2020 - 05:00 AM

My tek cakes are coming along nicely, but I've noticed on one of the pins that on the orange cap part there is a white bit. I've took pics, but sorry,  they're not very good as I don't really want to take them out of their tents at the moment. The circled part is the mark, not a water droplet >_>

 

IMG_20200112_094459.jpg

 

IMG_20200112_094350.jpg

 

All other pins look fine, but this one just has that mark on it. I don't think it's contam but has anything like that appeared on anyone pins before?

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  • IMG_20200112_094459.jpg

Edited by ss2matt, 12 January 2020 - 05:03 AM.


#2 coorsmikey

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Posted 12 January 2020 - 08:49 AM

There is fungus growing on the cap! :meditate:



#3 FunG

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Posted 12 January 2020 - 08:55 AM

I call them mushroom warts

Usually to much indicates a abort.

But yea, coorsmikey said it, its mycelium, another indicator that the r.h may be to high.

#4 TVCasualty

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Posted 12 January 2020 - 12:07 PM

It's just something that happens sometimes. I've seen those spots pop up in 99-100% rH conditions (cakes) and ~80% rH conditions (bulk subs), so I don't think it's related to humidity, or at least doesn't seem to be caused by the humidity being too high or too low.

 

It's probably just a spot of vegetative mycelium that started growing there for whatever reason. Maybe it's similar to rosecomb, where something induced a spot on the cap to revert to vegetative growth or maybe it's a new colony growing from spores that landed on it and sprouted (though I'm not sure if that would be possible)? In any case I don't get the impression that it's a contaminant or anything to be concerned about.



#5 ss2matt

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Posted 12 January 2020 - 02:48 PM

Yeah I had a feeling it was probably mycelium that established onto the cap, and I assume it'll just eat that pin and re-join the cake again eventually... a shame if that's the case, as that pin is the biggest so far to form on it and would have probably made a good fruit  :sad:

 

It does still seem to be growing though, so I dunno maybe it'll out-compete it or something...






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