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OfflineWormy
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Gypsum In Casing
    #7070981 - 06/20/07 05:58 PM (16 years, 8 months ago)

I have seen some casing teks where they suggest adding Gypsum to casing, say like 50/50 peat and verm type casing. I thought Gypsum was for grains, etc, keep them from sticking together. Why would it be added to a casing?

Any feedback much appreciated.


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Wormy

"There's a Hair in my Dirt!"

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OfflineRogerRabbitM
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Re: Gypsum In Casing [Re: Wormy]
    #7071871 - 06/20/07 08:57 PM (16 years, 8 months ago)

To provide calcium and sulfur, and also to prevent pH swings. Gypsum tends to hold the pH stable, wherever you set it with lime.
RR


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OfflineWormy
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Re: Gypsum In Casing [Re: RogerRabbit]
    #7076384 - 06/21/07 05:22 PM (16 years, 8 months ago)

Just went and bought a couple bags. Been casing for a couple years now with the peat/coir/verm mix, I noticed you didn't use coir in your DVD. I had never thought of using gypsum, always heard of it but never tried.

It would be ok to incorperate coir into that 10 part mix you have with the same lime and gypsum levels? I would do 7 parts of the 3 to equal 21, close to your peat/verm mix of 10/10 equaling 20.


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Wormy

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Edited by Wormy (06/21/07 05:28 PM)

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Offlinexaxphaanes
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Re: Gypsum In Casing [Re: Wormy]
    #7076858 - 06/21/07 07:20 PM (16 years, 8 months ago)

i wouldnt use coir in a casing layer if that is what you mean...since a casing layer isnt supposed to have nutes in it


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OfflineCryogenicz
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Re: Gypsum In Casing [Re: xaxphaanes]
    #7076981 - 06/21/07 07:43 PM (16 years, 8 months ago)

Coir works for a casing. You just use a small amount of it. Gypsum is a great additive.

-Graham


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Offlinexaxphaanes
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Re: Gypsum In Casing [Re: Cryogenicz]
    #7077006 - 06/21/07 07:47 PM (16 years, 8 months ago)

well yea it can work it's just risky since it has nutes it can contam since there isnt anything protecting it.


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OfflineCryogenicz
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Re: Gypsum In Casing [Re: xaxphaanes]
    #7077020 - 06/21/07 07:49 PM (16 years, 8 months ago)

There really isnt very much nutes in Coir. To grow with coir you need to supplement it anyways.

Some like Coir, Some don't. I personally like Peat and Coir based Casings the same.


-Graham


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OfflineCaptainLinger
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Re: Gypsum In Casing [Re: Cryogenicz]
    #7077040 - 06/21/07 07:53 PM (16 years, 8 months ago)

Not really. I wouldn't really advocate using it as a substrate, and definitely not as a casing, but I definitely have lil guys coming up all over the place from pure coir in one 8 square foot tub atm.

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Offlinexaxphaanes
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Re: Gypsum In Casing [Re: CaptainLinger]
    #7077048 - 06/21/07 07:55 PM (16 years, 8 months ago)

yea i have a mono tub right now fruiting with pure coir so i dunno.


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OfflineCryogenicz
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Re: Gypsum In Casing [Re: xaxphaanes]
    #7077080 - 06/21/07 08:03 PM (16 years, 8 months ago)

Yeah, and I wonder how many flushed you will get from it....

How much spawn did you use for that amount of coir.

-Graham


--------------------
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Offlinexaxphaanes
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Re: Gypsum In Casing [Re: Cryogenicz]
    #7077093 - 06/21/07 08:06 PM (16 years, 8 months ago)

ummmm i used 6 quarts to 3 maybe 3 and a half bricks of coir it's on it's 4th flush right now mono tub is 78 quarts ummmmm so got about 7 ounces from it


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"Anything i say is fictional"
  what you should look for in manure

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OfflineCryogenicz
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Re: Gypsum In Casing [Re: xaxphaanes]
    #7077115 - 06/21/07 08:10 PM (16 years, 8 months ago)

Xax - So you have a Bachelor degree in Biological Sciences?

-Graham


--------------------
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Offlinexaxphaanes
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Re: Gypsum In Casing [Re: Cryogenicz]
    #7077124 - 06/21/07 08:11 PM (16 years, 8 months ago)

where did you get that from????? confused ????


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"Anything i say is fictional"
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OfflineCaptainLinger
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Re: Gypsum In Casing [Re: xaxphaanes]
    #7077136 - 06/21/07 08:14 PM (16 years, 8 months ago)

I used a single quart jar, actually; coir spawns pretty darned fast.

I too, doubt that I'll get significantly more than the first, thanks to the lack of nutes. First flush is looking pretty darned prolific. I've always considered coir a second rate substrate based on posts here, but there are quite a few who disagree.

Obviously not the same quality, but you most certainly can spawn to pure coir with little to no problem.

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OfflineCryogenicz
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Re: Gypsum In Casing [Re: xaxphaanes]
    #7077140 - 06/21/07 08:14 PM (16 years, 8 months ago)

I noticed your title says Mycologist. So I was curious. Sorry, I vary from convo sometimes.


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Offlinexaxphaanes
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Re: Gypsum In Casing [Re: Cryogenicz]
    #7077154 - 06/21/07 08:17 PM (16 years, 8 months ago)

i am actually taking a mycology course for the past 8 months,also am taking organic chem for almost a year.......in the near future i may work in a agaricus bisporus factory but i dunno lots of hard work there mycology is more of a passion/hobby.


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"Anything i say is fictional"
  what you should look for in manure

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OfflineRogerRabbitM
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Re: Gypsum In Casing [Re: xaxphaanes]
    #7077306 - 06/21/07 08:52 PM (16 years, 8 months ago)

When using coir as a substrate, I've found little difference between it and horse manure other than the cost. Horse manure is free by the truckload, and coir is $3 for a small brick. Adding a small amount of coir to a casing layer of peat/verm can give a nice boost. It's about fungi food, not nutrition. Many growers still tend to confuse the 'nutes' required for plants and carry it over to mushroom cultivation, but they're hardly applicable. Few plants will grow on fresh sawdust, but mushroom mycelium thrives on it. Few plants will grow on pure cow or horse manure, but mushrooms thrive on it. Few plants will grow on pure coir(without supplementation), but mushrooms thrive on it.

Cubes, being the easiest of all mushrooms to grow, will grow on practically anything you spawn to.
RR


--------------------
Download Let's Grow Mushrooms



semper in excretia sumus solim profundum variat

"I've never had a failed experiment.  I've only discovered 10,000 methods which do not work."
Thomas Edison

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Offlinexaxphaanes
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Re: Gypsum In Casing [Re: RogerRabbit]
    #7077457 - 06/21/07 09:35 PM (16 years, 8 months ago)

but my question to you rr is that if you do put coir in a casing layer and having exposed nutes wouldnt that lead to contamination since all that has to happen is mold spores land on it and germinate?then it has nutes to further it's growing capability ? this is why i stopped using coir in a casing layer.


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"Anything i say is fictional"
  what you should look for in manure

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