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Nutritional Value

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  • May 16, 2016 at 2:37 am #1380
    Judith Taylor
    Participant

    Hi,

    Two questions arose when I viewed Module 2: one had been asked and answered previously on the forum. The second one is in follow up to the narrator’s remark that commercial growers in the Netherlands only use straw high in calcium. I’m assuming that means each type of substrate has it’s own set of nutrients in varying quantities; that being the case, do you know what coffee grounds bring to the table? Thanks very much, J.

    May 18, 2016 at 11:32 am #1385
    Adam
    Keymaster

    Judith asked:
    —————–
    Hi,

    Two questions arose when I viewed Module 2: one had been asked and answered previously on the forum. The second one is in follow up to the narrator’s remark that commercial growers in the Netherlands only use straw high in calcium. I’m assuming that means each type of substrate has it’s own set of nutrients in varying quantities; that being the case, do you know what coffee grounds bring to the table? Thanks very much, J.
    ——————

    May 18, 2016 at 11:55 am #1386
    Adam
    Keymaster

    Hi Judith,

    Great question! We had a sample of coffee substrate analysed a while back and it proved to be high in high Potassium, Phosphorus, Calcium and Nitrogen. It also had low levels of heavy metals (good to know!). The high calcium and nitrogen are a bonus as these are often added as supplements when growing on straw.

    The only problem that coffee has versus straw is the density and particle size being too fine, which is why the addition of 10-20% straw helps to create a nutrient-rich substrate, which also has good structure for the mycelium to prosper.

    Best wishes, Adam

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