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Re: composition of plants
- To: Aquatic-Plants at actwin_com
- Subject: Re: composition of plants
- From: Paul Krombholz <krombhol at teclink_net>
- Date: Sat, 26 Jul 2003 01:37:38 -0500
- In-reply-to: <200307250908.h6P98T0m026655@otter.actwin.com>
- References: <200307250908.h6P98T0m026655@otter.actwin.com>
* From: "Ben B" <benrx at naxs_net>
Where can I find a chemical breakdown of the elements in plants. I
know it is going to be different for different species of plants, but
in general I want to know for aquatic plants, what % Carbon they are,
Nitrogen, Phosphorus, etc.....
I found the table below at
http://www.soils.wisc.edu/~barak/soilscience326/essentl.htm
This table does not include the non-mineral constituents: carbon,
hydrogen, and oxygen. The mg/kg column is milligrams of element per
kilograms of plant material, dry weight.
Typical concentrations sufficient for plant growth. After E.
Epstein. 1965. "Mineral metabolism" pp. 438-466. in: Plant
biochemistry (J. bonner and F.E. Varner, eds.) Academic Press London.
Element Symbol mg/kg percent Relative
number of atoms
Nitrogen N 15,000 1.5
1,000,000
Potassium K 10,000 1.0
250,000
Calcium Ca 5,000 0.5
125,000
Magnesium Mg 2,000 0.2 80,000
Phosphorus P 2,000 0.2
60,000
Sulfur S 1,000 0.1
30,000
Chlorine Cl 100 --
3,000
Iron Fe 100 --
2,000
Boron B 20 --
2,000
Manganese Mn 50 -- 1,000
Zinc Zn 20 --
300
Copper Cu 6 --
100
Molybdenum Mo 0.1 --
1
Nickel Ni 0.1 --
1
--
Paul Krombholz in sunny central Mississippi