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Originally Posted by RayR
I'm not sure what your saying there, it goes against any science that I've ever read.
If there are no natural forces that can break a covalent bond with a nutrient mineral like in a chelate, then no life would exist, everything would starve.
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The subject was covalent rock mineral in sea kelp - not chelated compounds. Check on the acid required to dissolve (for example) quartz minerals.
Quote:
Originally Posted by RayR
Soil bacteria do consume sugars from root exudates and organic matter, but plants are also able to absorb some sugars ...
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Again, I was referring to specific carbohydrates that are a subset of those found in A. nodosum - and the excrement produced when consumed by bacteria present in many biologically active soils. This excrement has an auxin-like effect on plants. The shelf-life is pretty short, so don't go rushing to bottle it up. It appears to be part of a symbiotic relationship that goes back through the geologic ages.
When kelp extract is used in a foliar spray, or in the nutrient solution of "true" hydroponics such as "deep water culture" or "ebb-and-flow" in sterile rock, then the above activity does not occur.
Quote:
Originally Posted by RayR
What is this "auxin-like compound" that you are referring too?
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The Clemson study on kelp extract in horticulture is very interesting because it includes a vast review of the literature.
Auxins and compounds with auxin-like effects have been a huge area of agricultural research for the past 60+ years. For example, they are the bread-and-butter of Abbott agricultural group. Several universities have been leaders in this area. Here locally, UC Riverside is a champion.