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Offlinebtb103
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Yellowing of substrate surface? Uncased tubs in greenhouse (pictures)
    #9131448 - 10/25/08 11:59 AM (15 years, 4 months ago)

Last week I moved three fully colonized, uncased Z-strain coir-castings tubs into my greenhouse. I've been having a lot of trouble lately dialing in my greenhouse and am getting really frustrated by it.

I'm using a Vicks V420 for the first time and am finding it a lot different from my previous wick-based humidifier. The surface of my substrate is beginning to yellow, and areas of condensation on the greenhouse walls are also yellowing. The substrate in general looks unhealthy and perhaps overlayed. It's been seven days and there are no signs of primordia or pins. A monotub of the same strain that I began fruiting at the same time is already pinning.

First of all, what could be causing the mycelium to turn yellow? What property of my water would be causing that and is it damaging to the mycelium?

Second of all, what causes overlay, exactly? The edge of my monotub that receives airflow from a circulating fan in the room also shows the same kind of growth so I feel it may have something to do with drying out or something. But I've also maintained 90+% humidity so I don't know. I decided to go uncased this time around for simplicity's sake but it seems to be more sensitive.

Here are some photos:

Tub 1


Tub 2


Tub three looks like tub 2.

Help!


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Offlinegrod31
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Re: Yellowing of substrate surface? Uncased tubs in greenhouse (pictures) [Re: btb103]
    #9131464 - 10/25/08 12:03 PM (15 years, 4 months ago)

it looks like green mold in the second picter but I'm guessing its bruising due to the first picture. my guess is to much water dripping onto the surface. the yellowing is metabolites. there are many reasons why people say they form.my guess is it has something to do with the bruising.

edit- are you working with an albno strain those blue dots look like aborted albinos.


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Edited by grod31 (10/25/08 12:05 PM)

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OfflineKaptKid
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Re: Yellowing of substrate surface? Uncased tubs in greenhouse (pictures) [Re: btb103]
    #9131472 - 10/25/08 12:04 PM (15 years, 4 months ago)

Bummer. Get rid of them and clean.


  :sun:


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Offlinebtb103
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Re: Yellowing of substrate surface? Uncased tubs in greenhouse (pictures) [Re: KaptKid]
    #9131485 - 10/25/08 12:07 PM (15 years, 4 months ago)

There's no trichoderma (green mold), though the pictures may look like it. I really don't think it's contamination or metabolites. I have plenty of experience with metabolites and they don't appear to "stain" the mycelium like whatever's happening here.


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OfflineLothario
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Re: Yellowing of substrate surface? Uncased tubs in greenhouse (pictures) [Re: btb103]
    #9131652 - 10/25/08 12:41 PM (15 years, 4 months ago)

Get your humidity up to 99%. You can't really overdo it if you have enough FAE. You could supplement with an ultrasonic. You can be sure of the humidity with a mason's hygrometer.

Edit: No such thing as overlay uncased. Yellowing is probably drying/metabolites.

Edited by Lothario (10/25/08 12:44 PM)

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Offlinenastea
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Re: Yellowing of substrate surface? Uncased tubs in greenhouse (pictures) [Re: Lothario]
    #9132249 - 10/25/08 02:48 PM (15 years, 4 months ago)

Hrmm not sure due to the fact you say its on your walls, although it could be the spores. There are a few yellow molds out there, one of them being highly dangerous to humans.


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OfflineRogerRabbitM
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Re: Yellowing of substrate surface? Uncased tubs in greenhouse (pictures) [Re: nastea]
    #9132682 - 10/25/08 04:24 PM (15 years, 4 months ago)

Your substrates are too dry.  Dunk them overnight and return to fruiting conditions.  Either get your greenhouse humidity up to the upper 90s or lay a sheet of wax paper over each tray to hold in the humidity.  Lift it up several times per day to air out the tray and mist.
RR


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Offlinebtb103
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Re: Yellowing of substrate surface? Uncased tubs in greenhouse (pictures) [Re: RogerRabbit]
    #9133108 - 10/25/08 05:53 PM (15 years, 4 months ago)

Thanks RR. Got em dunkin now. Hopefully I can keep the RH better this time around.


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Offlinebtb103
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Re: Yellowing of substrate surface? Uncased tubs in greenhouse (pictures) [Re: btb103]
    #9176939 - 11/03/08 10:49 AM (15 years, 4 months ago)

Well they recovered, more or less. I pulled about 1200 wet grams from the three tubs combined. Most of the pinning took place from the sides and edges. Got a few monstrous clusters.

One of the tubs contaminated and I figured the others would eventually so I just tossed all three subs. I'm happy with one good flush.


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OfflineNibin
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Re: Yellowing of substrate surface? Uncased tubs in greenhouse (pictures) [Re: btb103]
    #9176995 - 11/03/08 11:07 AM (15 years, 4 months ago)

Quote:

btb103 said:
Well they recovered, more or less. I pulled about 1200 wet grams from the three tubs combined. Most of the pinning took place from the sides and edges. Got a few monstrous clusters.

One of the tubs contaminated and I figured the others would eventually so I just tossed all three subs. I'm happy with one good flush.




Well, that is 120g dry or 40 3g trips, so yeah, I'd be happy too. That would last me a couple of years at least.

You'll find out soon that if you enjoy this hobby you will end up with way more mushrooms that you could ever eat.

I end up throwing many away, lol.


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Offlinebtb103
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Re: Yellowing of substrate surface? Uncased tubs in greenhouse (pictures) [Re: Nibin]
    #9177387 - 11/03/08 12:30 PM (15 years, 4 months ago)

Quote:

Nibin said:
Quote:

btb103 said:
Well they recovered, more or less. I pulled about 1200 wet grams from the three tubs combined. Most of the pinning took place from the sides and edges. Got a few monstrous clusters.

One of the tubs contaminated and I figured the others would eventually so I just tossed all three subs. I'm happy with one good flush.




Well, that is 120g dry or 40 3g trips, so yeah, I'd be happy too. That would last me a couple of years at least.

You'll find out soon that if you enjoy this hobby you will end up with way more mushrooms that you could ever eat.

I end up throwing many away, lol.




Yeah I know what you mean. I pulled about 5.5 dry oz off of a monotub last week... which also succumbed to trichoderma after the first flush and was trashed. But 10+ oz harvested within a week is definitely PLENTY. :mushroom2:


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