Inorganic fertilizers disrupt mycorrhiza / Pascal Pernot culture sheet on AOS
Hey everyone,
I was reading this Caledonia care sheet authored by Pascal Pernot, which mentions a recommendation to add blood meal to the potting media as "inorganic fertilizers are known to disrupt the mycorrhiza."
Is there any truth to that or is it a sweeping statement more aligned with demonization of anything synthetic?
E.g. can one use a high nitrogen synthetic fertilizer (K-lite has similar NPK % as Blood Meal, a clear analysis of many micronutrients) and supplement it with Bacillus subtilis? When you google organic fertilizers most only list the NPK value, no listing of micronutrients or microbiological strains. Also, no guarantees that the manufacturing process doesn't affect the microbiology. Should we assume that after so many viruses have jumped from bats to humans, bat guano doesn't go through a high-heat process to eliminate pathogens that also eliminate beneficial bacteria?
It's worth noting that Pascal Pernot has an extensive career documenting and writing about terrestrial orchids, especially those found in France. However, doesn't cite any scientific works to back his claim on the AOS website. Neither do we know if his documentation process has also translated into a successful orchid growing career.
What are your thoughts? Is this a myth to be busted?
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