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Invisibleangryshroom
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!Bruising on caps!
    #551721 - 02/14/02 09:04 PM (14 years, 9 months ago)

Most of my mushrooms look healthy and happy. But, some, perhaps 20% of them get these weird soft dark looking bruises on the caps. They are fine through about 3 inches, and right about then, I start seeing the caps begin to deform.

They are only a few millimeters in diameter, possibly a half inch in diameter on the big ones. The spots llook wet, and slimy. Almost if someone was dropping water on the same spot of the mushroom for a few hours.

I was wondering if it had something to do with the rH and temps? My temps are a little high, mostly around 80. The humidity is usually around 88% as well. Is it a bacterial infection? If so, are they still eatible? They dont have any unusal smells. When they dry, you cant even tell that there was something there.

I do have a air bubbler going into a cup which tends to get spashy every once in a while, it could be from the h2o2 water, but I dont think it could splash on the farther shrooms on the other side of my terr.

Any info on this? Sorry no pictures... :frown:


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Invisiblephrozendata
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Re: !Bruising on caps! [Re: angryshroom]
    #551963 - 02/15/02 12:42 AM (14 years, 9 months ago)

What color?

It could just be rotting?



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OfflineAnnoA
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Re: !Bruising on caps! [Re: angryshroom]
    #552040 - 02/15/02 01:59 AM (14 years, 9 months ago)

It is Psudomonas sp., bacterial blotch, quite common.

As far I know Pseudomonas sp. are not pathogen for humans, so they should be safe to eat. Pick them and dry them in fron of a fan.

Why are you keeping such a high temperature in your terrarium? 74?F is the optimum fruiting temperature.



Edited by Anno (02/15/02 02:00 AM)


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OfflineAnnoA
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Re: !Bruising on caps! [Re: angryshroom]
    #552055 - 02/15/02 02:09 AM (14 years, 9 months ago)

Ok, you can shoose between these 2 choices:

Bacterial brown blotch and ginger blotch - Pseudomonas spp.

Superficial brown or ginger colored lesions on the mushroom cap surfaces result in unmarketable mushrooms.

Bacterial Pit, Bacterial Slime Diseases - various bacterial spp.

Bacteria, at times in combination with fungal species, start as surface blemishes then develop as sunken pits of digested mushroom cap tissue or a slimy surface coating, making mushrooms unmarketable.

Souorce: http://cipm.ncsu.edu/cropprofiles/docs/camushrooms.html

and on the pathogenity, although most species non pathogen to humans: "
History, Use and/or Medical Implications: Some species pathogenic to humans. Of special note is Pseudomonas aeruginosa (also known as Ps. pyocyanea), a species that causes blindness and other diseases...."

Source: The Mushroom Cultivator


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Invisibleangryshroom
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Re: !Bruising on caps! [Re: Anno]
    #552436 - 02/15/02 01:02 PM (14 years, 9 months ago)

Thanks for the info Anno, I really appreciate the time you put into your posts!

Well Id have to say I would need a picture to decipher the differences. However, I would tend to think that the bacterial pit would have to be the one I am battleing.

They are brown/ginger leisons however, turn slimy, and then start going inward a little, just on the caps. However, when I dry them, I seriously dont see anything at all. I unfortuently have been noticing that they have been coming more prodominent over the past week.

I lowered my temps, to approx 72F, my humidity is around 85 now too. As far as this crop/flushes go, I dont think I can really do anything about it, huh? After the casings are done producing, im going to really bleach out every thing in my terr, and rinse it out really good before i set my new casings in the next 2 weeks.

They are still eatible correct? I wonder what the blindness bacteria looks like...eeeehh.. :/

I wonder if I could find a link to photos of the bacteria on the caps. They make them look so damn ugly ... ;( (when they are fresh of course)

Thanks bro...


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OfflineAnnoA
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Re: !Bruising on caps! [Re: angryshroom]
    #552473 - 02/15/02 01:29 PM (14 years, 9 months ago)

Bacterial pit:



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OfflineAnnoA
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Re: !Bruising on caps! [Re: Anno]
    #552484 - 02/15/02 01:37 PM (14 years, 9 months ago)

Bacterial blotch:



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OfflineAzure
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Re: !Bruising on caps! [Re: angryshroom]
    #552547 - 02/15/02 02:30 PM (14 years, 9 months ago)

You most likely have a bacterial blotch. It probably doesn't look identical to Anno's picture. This commonly forms when you water the caps overhead and the water on the caps don't dehydrate fast enough.


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Invisiblemycofile
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Re: !Bruising on caps! [Re: angryshroom]
    #552643 - 02/15/02 03:37 PM (14 years, 9 months ago)

Didn't you have this same problem/post a week or two ago?

The temps favor bacteria. Bacteria are not fond of well circulating air.

Let the shrooms dry if you water the casing, by lowering humidity and increasing air flow immediately after watering.


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Invisibleangryshroom
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Re: !Bruising on caps! [Re: Anno]
    #552770 - 02/15/02 05:51 PM (14 years, 9 months ago)

Right on!!!
Thanks bro..

Yeah its bacterial blotch for sure... no dout about it. Looks exactly the same. Still eatible correct?

I had this problem a few weeks ago. Its the same problem, however I wanted to get some specific info on it.

Some questions:
1) How do I get rid of it?
2) How can I not have this happen in the future?
3) What causes it? -- Oh I just read, ok, too much watering? I mist everyday, even if my casings dont look dry. Just a few sprays though...guess its too much. The humidity prolly just let it sit there too :frown:

Thanks so much guys, I really appreciate it! :smile:


Edited by angryshroom (02/15/02 05:55 PM)


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Invisiblemycofile
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Re: !Bruising on caps! [Re: angryshroom]
    #555169 - 02/18/02 10:33 AM (14 years, 9 months ago)

How to get rid or it/prevent in future:

If you mist fruits directly, you need to lower humidity for a while afterwards to let the fruits dry off.

Lower your temp, it is favorable to bacteria.

Increase your air circulation if it is not sufficient. Contams hate moving air. Circulation is different from exchange...


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PM me with any cultivation questions.

I just looked at my profile and realized I had a website at one point in time on geocities, it's not there anymore and I have no idea what I had on it. Anybody remember my website from several years aga? PM if so please.


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