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Got Bud; If you have high organic matter it is virtually impossible to have low Boron. For my take on Boron please look here;So are you talking farming cannabis or food or both? I'm an old farmer myself and produced very good yields of cannabis by growing naturally, using a shotgun approach.
Certainly a soil test can be valuable but the ones I fo
https://www.icmag.com/ic/showthread.php?t=339371
I even quote Slownickel at the beginning of the article.
I see you quoted many authors at the bottom of your "article" or sermon, haha.. didn't see where you quote me.??
I can also see where you got some bad information from not reading that article "Effect of Composted Organic Matter on Boron Uptake by Plants U. Yermiyahu, R. Keren, and Y. Chen ~ SOIL SCI. SOC. AM. J., VOL. 65, SEPTEMBER–OCTOBER 2001" critically.
I draw your attention to page 1437, last paragraph on the bottom left, last sentence. Here is the fatal flaw in this article.
"Mature compost (COM) produced from the solid fraction of separated straw-containing cattle manure was used in this study.The COM was leached in a column with deionized water at a solid:liquid ratio of 1:60 and then dried in an oven at 30C. Thirty mLof deionized water were added to 2 g of COMa nd shaken for 4 h; the solution was then decanted using high-speed centrifuge. Water-extractable Na, K, Mg, Cl, SO4andNO3 in the dried COM were determined. The concentration of those ions was0.05 mmol L1. The B concentration in the extraction solution was 0.04 mmol L1. Although the total B content in the washed COM was not determined.."
Basically they assumed away the content of the boron left over in the organic material after extracting what was water soluble! BAD SCIENCE.
I have know many "scientists" from the Volcani Institute in Israel, they tend to believe quite heavily in what is water soluble and very little on what is the content in solids.
Lots of times, simple mistakes like this assume away major issues such as not counting where all that boron came from with out it being applied. That doesn't mean that it got beamed in from Cosmic rays. I would bet quite a bit on the B unaccounted for was indeed that B left over in the OM left over from washing, not the beamed in Cosmic kind.
Thanks for chipping in, love you cosmic guys. My favorite (and is a friend) is Hugh Lovell. I could tell you some experiences with him too. His Biodynamic preparations have done wonders on soils, but he still applies his gypsum!!
Shotgun approach will work in many cases, not saying it won't.
What I am saying is that when folks have issues, the way to understand what to fix (and this is usually why these conversations originate, due to problems) is to look at ratios. If you see 20% K and 35% Mg and 40% Ca, not really any thing you can do other than to add a Ca source. I have seen organic folk get themselves in that problem many times. Surely the addition of high humic acids will surely buffer, but it doesn't stop the competition between elements.