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OfflineSuntzu
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Bacterial blotch and coir
    #318524 - 05/16/01 01:30 PM (15 years, 6 months ago)

Posted this elsewhere, shroomery was giving me trouble. Sorry for the cut and paste.


First off, I am a big coir fan. It colonizes very quickly and has great
texture and water holding capacity. Several flushes have made me a
believer.

One problem. A new problem. I thought I'd seen every type of contam,
but I think I have bacterial blotch. And I think it's incubating in the
coir. It doesn't seem to mess up the fruiting, but certain fruits end up
aborting, or need to be harvested early as the slimey goo eats away at the
cap. That's the other thing, this infection never hits stems. It also seems
to take hold of any cap that has carried even a tiny bit of coir with it in
its growth.

So I guess this is the first bad thing I've come across with coir, and I'm
wondering if others have experienced the blotch.

I've been hydrating coir by pouring tea kettle/boiling water over it.
This is very cool because it expands VERY fast, sort of like those 4th of
July snakes. Presumably this would offer a degree of pasteurization.

Next batch, I plan to give a bona fide pasteurization, as well as mix in a
bit of oyster shell. Any advice on volumes? Has anyone else noticed
bacteria having fun in coir?

Even with the blotch, I'd still never go back to peat.

The above information is complete fiction.


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Offlineegghead
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Re: Bacterial blotch and coir [Re: Suntzu]
    #318534 - 05/16/01 03:06 PM (15 years, 6 months ago)

I've seen that too. And my coir was PC'd.. 8(

That's a bummer. I was wondering what was up w/ that. It's only happening on the coir casings.

* Contributor to the Free Spore Ring


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InvisibleMr. Pink
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Registered: 01/30/01
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Loc: Small town with a BIG pro...
Re: Bacterial blotch and coir [Re: egghead]
    #318541 - 05/16/01 03:27 PM (15 years, 6 months ago)

What do you mean by bacterial blotch?

My gro-brick coir (supposedly the contam free kind) has been showing some funky fucking colors lately, and it has definetly affected pinning and primordia formation. At first it started out to be light blue/green specs of growth which I assumed was damaged mycellium because it didn't spread fast. A couple days ago I got nervous and thought it could possibly be trich, so I put some baking soda on the small spots. Two days later and a fuzzy white growth that bears little to no resemblance to mycellium appeared from under the baking soda.

The casing is pinning now, but very sparse formation. AFOAF is dissapointed. He has two other coco casing, One is fruiting LIKE MAD, the other is doing good, but has a little of the blue/green and white growths on it. PINS DO NOT APPEAR NEXT TO THIS GROWTH. Can't be good..just an experience. AFOAF got greedy his first time, but can see the huge difference between coco and verm



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Offlineegghead
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Re: Bacterial blotch and coir [Re: Mr. Pink]
    #318556 - 05/16/01 03:52 PM (15 years, 6 months ago)
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Check out the splotch on the mushie in the top-right corner..

Edited by egghead on 05/16/01 03:54 PM.



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OfflineSuntzu
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Re: Bacterial blotch and coir [Re: egghead]
    #318608 - 05/16/01 04:48 PM (15 years, 6 months ago)

BINGO, that's exactly what these caps are doing, some even worse.
I should have said that it doesn't seem to affect PINNING, it does cause aborts if a very young fruit gets affected.
Well, that's interesting to hear about getting this even after PCing. Maybe raising the pH slightly will make a difference. Oh well, I'm still smiling compared to the inevitable 50/50 mold contamination. At least you can still fruit decently with blotch.
Anyone with a handy TMC [or if you know off the top] what genus of bacteria causes this? Are there several?
My friend has my TMC, and the only thing that comes to memory is Verticillium, but that sounds like a mold. Also, it would be great to get Stamets recommendations for this plague, aside from nuking the casing more.

The above information is complete fiction.


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OfflineSuntzu
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Re: Bacterial blotch and coir [Re: Suntzu]
    #318617 - 05/16/01 05:08 PM (15 years, 6 months ago)

Damn, I love GOOGLE
http://www.archwaterworks.com/industrial/tech/CCH/41a.htm

http://www.cordis.lu/tmr/src/grants/fair/965062.htm

http://www.greenmount.ac.uk/hort/techinfo/pseudomo.htm

The last link is great. Pseudomonas spp., which only are problematic at high levels; increase air circulation, avoid making surfaces too moist. I don't know what I think about that chlorination approach.
Well, after that little ioda of info, I'm glad I've been throwing out the caps with blotch.

This does seem to blow the pH adjustment idea, though. I can't imagine the slight change having any effect on Pseudomonas [like Trich, anyway].

The above information is complete fiction.


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