As one with a grounding in science (BS in biochemistry, MD), I must take issue with a number of assertions in your article.
First, while the role of symbiotes in plant culture is certainly present, how do you explain the ability to grow plants in sterile conditions, or in inert media? Furthermore, wouldn't a liberal dose of physan or other antifungals hinder a plant's growth significantly? At least from my experience the plants don't seem to mind it at all, which means either the fungi are resistant, or the role of symbiotic fungi is less than you would claim, at least for my plants.
Furthermore, to what molecules do you believe velamen to be permeable? "Artificial" fertilizers are composed primarily of very small ions such as NH4+, NO3-, Fe++, SO4--, etc, all of which to me would seem to be readily transported through cells of most types. Certainly most cells (animal, plant, and otherwise) are not only permeable to small ions, but have active (ATP driven) and passive (concentration gradient/charge gradient) transport channels for specific ions.
Also, "artificial" fertilizers all contain naturally-occuring compounds, just in different concentrations than are found conveniently in nature. And if you're looking for a way to prove that velamen is impermeable to fertilizer components, I can assist you in designing experiments that would be both cheap and effective--anyone with access to a basic quantitative chemistry lab should be able to perform these tests.
I'd be interested to hear of the specifics of your research, but from what I can see, the science is a bit soft. But please, prove me wrong--I'm always a fan of evidence and data!
On a related note, my soon-to-begin orchid project will address fertilizer type, optimum concentration, and growing media, among other variables.
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