Richard

Here's a product that sells for US $31 per gallon. What do you folks think of it: applause? regrets?

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Patty in Wisc

I am not familiar with any of the contents. I'm looking for NPK & there is none. I thought all fertilizers had NPK.

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Patty




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Patty in Wisc has sadly passed away 9/05/11. We will miss you Patty.

Chironex

Regrets, as i am certain that you have a product with the same or better content for about half the price or less.
Right or wrong?

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Scot

chong

Here's an analysis report, no Potassium, almost 60% Carbon:
http://www.turfprousa.com/index.php?...d=31&Itemid=51

Richard

This product is from Florida which has minimal labeling requirements. It is being sold as a plant food product so it falls short of the regulations in California and several other states.

The label lists both humic acid and fulvic acid which are usually considered synonyms unless someone is differentiating the derivation of the two. So the total percentage of carbon acid complexes is 14.5% -- unless there is overlap in the two.

It is definitely a source of elemental carbon which is important in south and central Florida soils. At some point though you can have too much carbon so monitoring the soil is a good idea.

On the website it states that the product contains 73 minerals but it was difficult to find which ones and how much. Apparently the percentages fall below the Federal labeling requirement.

With regards to actual N-P-K, I'm going to guess on about 2% available nitrogen, far less phosphorus, and negligible potash. It would be interesting to obtain an analysis from the manufacturer.

This above report is for the granular product.

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Michael_Andrew

Humic acids - the fraction of humic substances that is not soluble in water under acidic conditions (pH < 2) but is soluble at higher pH values. They can be extracted from soil by various reagents and which is insoluble in dilute acid. Humic acids are the major extractable component of soil humic substances. They are dark brown to black in color.

Fulvic acids - the fraction of humic substances that is soluble in water under all pH conditions. They remains in solution after removal of humic acid by acidification. Fulvic acids are light yellow to yellow-brown in color.

Michael_Andrew

I'm really way out of my league here but that stuff sounds like compost tea!

Richard

Initially reported to be from a humic coal deposit in Southeast Georgia although they may be currently use humic tailings from mining operations that are sold on the open market.

Thanks, I had not seen this distinction before -- but rather by the manufacturing process. It makes sense though, since humic acid is often manufactured by a steam distillation process.

I noticed several years ago that humic acids is a plural term for a loosely-bound complex of carbonic acid chains. As one author put it: "A Heintz-57 mixture of carbonic acids". The singular form "humic acid" only seems to appear on product labels.

So all fulvic acids are humic acids, but not vis-a-versa. I wonder then how to interpret the label of the product? Is it a 14.5% combination of 8% fulvic and 6.5% humic acids, or is there "double" counting and what we really have is 3.6% solution of humic acids?

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Richard

Correct. Depending on how you interpret the label, you can purchase the equivalent -- a gallon of steam-extracted humic acid (e.g., Grow More) for $7, or make a gallon of weaker concentration by using a quart of humic acid ($3) and adding enough distilled water to produce a gallon.

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