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Organic potassium source: Any ideas?


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#1 urbanite420

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Posted 27 August 2010 - 07:18 AM

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So Im running fully organic soil and Im wondering what is an organc source of potassium (K)?  my boy was talkin about composting banana peels, but I think there is a better source, I just dont know about it.

I'm not running any deficiencies but I think the plants could use a bit more to improve their performance.  Anyone know whats good?

Thanks!

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#2 Archimage

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Posted 27 August 2010 - 07:25 AM

molasses. kelp and green sand are good choices.. also, pick up some FF All Purpose and FF Bulb Food..

#3 Mr. Greengenes

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Posted 27 August 2010 - 07:40 AM

Greensand is good for lots of micronutes, but kind of low in K. In spite of it's chemical sounding name Sul-Po-Mag (Leonardite) is certified organic and has an NPK rating of 0-0-20.

#4 Archimage

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Posted 27 August 2010 - 07:53 AM

I have some Sul Po Mag, just have never used it.. The numbers scare me..
Green Sand is 0-0-3, but it's very slow release.. So it really comes into play, if you recycle your soil..
I mix green sand into all my soil mixes, and also use it as a top dressing..

#5 unclefester

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Posted 27 August 2010 - 07:59 AM

Organic infers living, while minerals such as K are obviously not. Its available in raw form but is better formulated for absorbtion when in liquid form.

#6 kennabis

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Posted 27 August 2010 - 08:15 AM

potassium is a alkali metal, so is an inorganic by kingdom.

i know some cats, who make their own ferts, and they burn the banana to ash, then, they make a tea, of sorts with it?!? i dont know the process, but, perhaps i will take a closer look.

leonardite and any other lake bed minerals are good sources.

great thread!
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#7 Archimage

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Posted 27 August 2010 - 11:28 AM

Rhubarb has the most K.. That would be cool, to try and make a tea out of it..

#8 urbanite420

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Posted 27 August 2010 - 02:41 PM

Rhubarb is interesting....  Thanks for the help.  I think I'll go with the leonardite.

Much appreciated!

:thumb:

btw, how does one give rep?  ive never figured that out!

#9 Badmf

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Posted 27 August 2010 - 08:33 PM

I dryed out bananas and ground em up since this was a remote locale the bananas were a needed nutrition source "for the grower" lol, side benefit was adding to the compost tea and soil.
BTW; "Organic" is from a living source or its decay, not necessarily alive at the time.

#10 mamador1r

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Posted 27 August 2010 - 08:55 PM

sul po mag derived from leonardite & also humic acids are derived from the same leonardite. great for improving the efficiency of nutes & making insoluble nutes into usable nutes
Top Drip Grow log  grow grow grow ! ! !

#11 urbanite420

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Posted 28 August 2010 - 07:09 AM

Yes, organic is what i was looking for.  The mineral source from leonardite was something i didn;t think about till i was just informed.  

Would anyone know if the K is more readily available form the dried banana peel tea or the leonardite?

#12 fuster

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Posted 31 August 2010 - 10:23 AM

Go with roots organic bat guano 0 5 5 high in potassium and phos
use with other organic nutrients

#13 Kaliseeds

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Posted 08 September 2010 - 10:23 PM

Sul-Po-Mag (Leonardite) is STRONG stuff.  Use wisely and sparingly during your grow.  Use a ppm meter to measure your runoff.  

I also recirculate my mixture and prefer to add these additives to the mixture before I use it.

#14 seesun

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Posted 20 September 2010 - 02:46 PM

organic means something contains carbon.....nothing more. everything else is a bastardization of the word for marketing purposes.

#15 urbanite420

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Posted 20 September 2010 - 07:52 PM

I know what the real chemical definition of organic is. In agriculture it implies the use of microbes to decay matter and release its nutrients for the plant to use.

#16 Magnum

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Posted 20 September 2010 - 09:04 PM

Sulfate of Potash is a good source of Potassium that is organic.
This is a great addditive that will strengthen your crops with increased vigor and aid in discouraging disease.
Golf courses use alot of this stuff to keep their turf strong and healthy.
The sulfer in Potash work great for keeping your girls nice and dark green too.

#17 webfish

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Posted 22 September 2010 - 04:01 PM

Firebug we have a winner, lol most of the other suggestions are good if you have the time, raw organic material will take months to breakdown and release the nutrients your looking for the bubbling buckes=ts shown above are what you would call super organics and depending on mixtures can deliver full strenght nutrients in 24 hour eight through soil or foliar applications.
if you take an organic substance and bury depending on temperatures it can take weeks, months even years to deliver nutrients..

#18 poopindookey

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Posted 24 September 2010 - 01:31 AM

I posted this in the sugars thread but it applies here as well and its about as organic and beneficial as you can get.


Honey is a natural glucose and fructose sugar that is readily recognized and used for energy by our bodies. Honey contains mineral such as magnesium, potassium, calcium, sodium chlorine, sulphur, iron and phosphate. Honey also contains small amounts of copper, iodine and zinc. Honey contains vitamins B1, B2, B6, B5 and B3

Although I use local wild harvested, none of that plain stuff made from clover in the regular stores.




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