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Old August 3, 2017   #11
bower
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Join Date: Feb 2012
Location: Newfoundland, Canada
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Well it certainly would suck to pack mycos with chemical ferts.
They say it's "concentrated" so some processing obviously went into making it both strong and soluble.
The N-P values are not impossible from organic sources - mix of blood meal and bone meal, or fish product - the liquid can be reduced and concentrated... it is doable IMO.
As for the K, I wonder if molasses could be concentrated to triple the value.. wood ash is also possible as a source of K (and what the heck is "rabbitbrush"???)
http://www.lundproduce.com/N-P-K-Val...verything.html

I think a lot of commercial preps don't want to announce "molasses" on the side of the package, which is much cheaper to buy as 'molasses' than it is as 'fancy organic ferts'. Nor "wood ash" either. Which is easy to get for nothing.
On the other hand, if they were using kelp as a source of K and micronutrients, they'd be far more likely to announce it on the package - why not it's a selling point. Only the coastal diehards are up for getting their own.
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