Straw TEK contams?

Nan's Nook : Archives : Casings : Troubleshooting : Straw TEK contams?
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By Joe Mamma (Madscientist) on Friday, December 28, 2001 - 09:30 pm: The Nook

My straw has turned green in two spots. They are very small. Size of a dime. I sprayed a little H2o2 and h2o mix on the spots. Should I do the entire thing? Just cut out the spots? Chuck them? I have ten tray. One only has the spots on it. I have another tray that has turned a little on the yellow side. This tray is about three weeks old. It was very white, all over. Now it is a very, very light shade of yellow. I misted the trays last night. This was my first time misting. This cake was turning blue in a couple of spots and the casing was getting dry. Do you think that the misting had anything to do with this. I used fesh water in a brand new garden spray can. Anyone have any help here?

By Nan (Nanook) on Saturday, December 29, 2001 - 01:27 am: The Nook

H2O2 does nothing against green. You can try removing it, sprinkle some lime, and patch the casing. I just pitch them. Green stuff is bad news.

By Joe Mamma (Madscientist) on Saturday, December 29, 2001 - 03:16 am: The Nook

thanks NAN

By Joe Mamma (Madscientist) on Saturday, December 29, 2001 - 03:51 am: The Nook

I think that the green mold might just be blueing. But it could be the water on it that is making it look a blue color. Anyhow I think that I will wait a bit longer. I doesn't seem to be getting any bigger. But what do you think of the yellow tint on the other tray that I have? Do you think that this may just be from the water that I misted on it. I think that this tray is fine. It has shrunk in the last 16 hours. I seem to notice this in all my casing/BRF trays just before fruiting. I hope so, this tray has been there for 3 and 1/2 weeks.

By quote: (Quote) on Saturday, December 29, 2001 - 04:39 am: The Nook

the yellowing is prolly just age and water damage.
try washing the suspect 'green' next time you see it, bruising won't wash off, while mold doe.

By Nan (Nanook) on Saturday, December 29, 2001 - 04:42 am: The Nook

Yellowing is a common sign of water damage. It is possible for the mycelium climbing through the casing to discolor blue from dehydration. Trich usually breaks through a casing as a dense solid white, it is different from mycelia in that it is not fiberous. As the trich matures on the casing it turns powdery green as spores are produced. Once you learn to recognize trich it is a simple matter to pull the bed and dispose of it before sporulation begins.

If you think your casing is too dry, and misting the casing is causing yellowing of the mycelia, try using a syringe and inject a few cc's of water here and there just below the surface.

A good pic here would really help.

Good luck

By Joe Mamma (Madscientist) on Saturday, December 29, 2001 - 04:57 am: The Nook

Thank you very much for the advice. I will get pics soon.

By Joe Mamma (Madscientist) on Sunday, December 30, 2001 - 11:14 pm: The Nook


I have some small contams on my straw. Not the spots I was talking about earlier. I just thought I would take a look on the bottom of the trays. They are translucent. Six of them have a little green on the bottom. From what you said Nan, the green is the spores from Trich. I have looked at some pics of Trich and my trays don't look like Trich, it looks like mycelia. I will try to get pics soon. Never the less, I lifted the straw and pulled the green straw out. I assume that maybe the trays were not sterilized well enough before I put the straw in it. Or maybe there was a little puddle of water there. Any feed back? I have about twenty cakes that I would like to birth and try the straw again,so I jst want to see if anyone has any advice for me before I try again. I don't want to waste these cakes. The tray that turned yellow is finally starting to pin. I have four pins coming up. I have only seen four in the last 24 hours. I hope to see more soon.

By quote: (Quote) on Sunday, December 30, 2001 - 11:40 pm: The Nook really is a shame.
you'll prolly have green popping up all over that tray soon, i'd get rid of it.
that is, assuming it is trich.

By Joe Mamma (Madscientist) on Sunday, December 30, 2001 - 11:52 pm: The Nook

No, please do not tell me that. So I assume that there is nothing to be done to help me. Will spraying lime water do any good?

By quote: (Quote) on Monday, December 31, 2001 - 12:58 am: The Nook

it might slow it down a little, but once trich gets a foot-hold, i've never seen anything to help much. it always comes back.

By Nan (Nanook) on Monday, December 31, 2001 - 01:08 am: The Nook

Words to the wise Quo

By Fishy1 (Fishy1) on Monday, December 31, 2001 - 02:48 am: The Nook

Yep. If you case a tray w/ the trich on it, the casing will be all green w/in a day or so.....not worth the risk. This stuff is NASTY.
Toss it before it gets in the carpet, in your lungs, and all over your good cultures.
It happens to everyone.....sooner or later.

By Joe Mamma (Madscientist) on Monday, December 31, 2001 - 07:50 pm: The Nook

I picked out the green stuff last night. It is about 20 hours later and no sign of contams anymore. I thinking that maybe it wasn't Trich. I don't know anymore. I can't find a great pic of early trich. Anyone know of a good one. I have white all over the place but it looks like mycelia to me. I will have pics soon.

By Fishy1 (Fishy1) on Monday, December 31, 2001 - 09:58 pm: The Nook

You might be able to get some yield off of it. I hate it when i dump tray, only to look in the compost later and see shrooms all over it!!!