Straw Substrate

Discussion in 'MUSHROOM CULTIVATION' started by Nichrome, Jul 9, 2017.

  1. Nichrome

    Nichrome Well-Known Member Supporter

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    Thjs week I will be experementing with pink oyster on straw. I have sterelized the straw in a lime bath but I still have a lot of unanswered questions.

    1. I had to use 45 liters of water to soak 15 liters wort of straw. How can this procedure be ever wafer efficient? Can I use the lime bath for more than one soak; maybe topping up with lime again?

    2. How long does the soak has to be? I used 1% lime.

    3. What spawn % do I have to use? I am using softwood spawn.

    4. Do I need to supplement the straw?

    5. What is the purpose of shreddinv the straw?

    Thanks in advance!
     
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  2. Ellis

    Ellis Mycovore Supporter

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    I can tell you what I do for the supplemtation/spawn ratio questions. For one extra large filter bag (24"x9.5") I use one full quart of wbs spawn. I may try 1 1/2 quarts next time for added supplemtation. Using bran, if it's not colonized is asking for contams.

    Cutting up the straw make it easier for the mycelium to get inside the straw, and also makes it easier to get good compaction in you bag. Pack it tight!
     
  3. Odin

    Odin Well-Known Member

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    1. I have never heard of reusing the water, but I don't see why not. If you have a way of heating it back up to 170°F you should be good I think. I'm not sure about the Lime though, Whether you would want to add more the second time around. I would personally not reuse it. If you truly want to be more environmentally conscious about your water consumption, I would collect and use rain water.
    2. I do 1.5hrs.
    3 For oysters, the standard spawn ratio is 1:8 spawn to substrate.
    4. Don't add anything but lime. When pasteurizing, supplements cause contamination. Only supplement sterilized spawn or substrates.
    5. Shedding the straw into 1"to 3" pieces creates maximum points of contact for when you add your spawn. It's the inside if the straw that feeds the mycelium.

    Good luck!
     
    Last edited: Jul 11, 2017
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  4. Nichrome

    Nichrome Well-Known Member Supporter

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    Thanks a lot @Odin !!!
     
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  5. Odin

    Odin Well-Known Member

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    I look forward to seeing your results!
     
  6. MB3

    MB3 more fun than a ferret in you

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    I have read reports of people reusing lime water, no experience of my own. May have been a pdf from aloha medicinal mushrooms, don't mark me on it tho.
     
  7. Nichrome

    Nichrome Well-Known Member Supporter

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    Well until now I only have one bucket and it seems to be colonizing well. I have used one pint of SW spawn in a 3 gallon bucket and it seems to me it is enough; however only time will tell.

    If this is successful, I will think about doing multiple buckets however such a waste of water in a desert island is an unforgivable sin for me.
     
  8. MB3

    MB3 more fun than a ferret in you

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    At very least use in a garden
     
  9. Nichrome

    Nichrome Well-Known Member Supporter

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    Not when the natural PH of the soil is already over 9!
     
  10. Odin

    Odin Well-Known Member

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    Wow, that's high
     
  11. Nichrome

    Nichrome Well-Known Member Supporter

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    Our vegetables taste like stone! No I am joking. Only our water tastes like stone (now I am not joking).
     
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