Science Fair Project Encyclopedia
Humic acids
Humic acids are those organic compounds found in soil that are insoluble in acidic conditions. They are dark brown to grey-grey black in colour. They are natural polymers, produced by the breakdown of dead plant material. They contribute to soil fertility and are precursors of fossil fuels. Mixtures of humic acids are used in hydroponic gardening.
10-26-2009 08:16:03
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details