Growing Button Mushrooms on Rye Grain?

topic posted Sat, August 2, 2008 - 1:21 PM by  Unsubscribed
I've read that people who can't get around to locating well rotted horse manure to grow their button mushrooms on, grow it on straight rye grain. I was a little curious. Why rye and not any other grain? Why not wheat berries or barley berries? They are so much easier to obtain. Is there some advantage to using rye berries as oppose to any other whole grain?

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  • Re: Growing Button Mushrooms on Rye Grain?

    Sat, August 9, 2008 - 2:17 AM
    I use the spent barley malt grains from when I make beer and that
    works fine. Bird seed is good too. Mix them all together !
    • Re: Growing Button Mushrooms on Rye Grain?

      Thu, November 20, 2008 - 4:01 AM
      rye is cheap depending on location
      in my area wheat and oats are cheaper but not much
      you can use any mix of grains pretty much like millet, corn, sorghum, rice, amaranth, quinoa, barley etc (diversity is good) just try to use whole grains if possible and sterilize well
      there are other things you can add from the kitchen in smaller quantities like 5-20% total like peas, soybeans, hemp seed and flax
      also be sure to add a good whack of lime and gypsum
      soak overnight - boil for half hour or so - cool for 16-24 hours - sterilize for several hours @ 215F/15psi - cool - innoculate under a flow hood
      and your good to go
      grains take longer to fruit compared to straw and compost but will flush out over a longer period and make more nutrient dense fruits
      • Unsu...

        Re: Growing Button Mushrooms on Rye Grain?

        Thu, November 20, 2008 - 5:19 AM
        Yes, I've used pet store bird seed that has a mixture of seeds and the mushrooms grow very well on it. I'm curious though. Why do you add lime or gypsum to the mixture? Is it to keep the grain from sticking? Or is it to help regulate the Ph of the mixture?
        • Re: Growing Button Mushrooms on Rye Grain?

          Fri, November 21, 2008 - 6:31 AM
          If you are growing on a 'hobby' basis grain is good. For commercial applications however it would be very expensive to fruit mushrooms on grain.

          We use either wheat or rye for growing spawn, but the use that to inoculate bulk substrates like straw or supplemented sawdust.

          Gypsum and lime are used to keep grains from sticking and to regulate ph. Most fungi are acidophiles, and that includes mold. However mushroom mycelium is much more adaptive to alkaline conditions than mold. When mycelium is introduced to an alkaline substrate it actually will turn the substrate into a Ph that is more desirable to it as it colonizes.

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