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Re: Iron oxidation states
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To: Aquatic-Plants at actwin_com
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Subject: Re: Iron oxidation states
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From: psears at emr_ca (Paul Sears)
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Date: Tue, 26 Mar 1996 08:42:11 -0500 (EST)
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In-Reply-To: <199603252039.PAA01325 at looney_actwin.com> from "Aquatic-Plants-Owner at ActWin_com" at Mar 25, 96 03:39:02 pm
Dr. Dave wrote:
> Chelation is the only way to deliver adequate
> amounts of iron to plants via the water column. BTW EDTA complexes iron
> as the Ferric (+3) ion.
> Biologically, the valence state of Fe makes all the difference in the
> world ... its precisely because of its redox properties that makes Fe one
> of the central atoms in photosynthesis and respiration.
>
I take it from this that the plants _can_ absorb it as Fe(III),
and then _use_ it in whatever state is necessary. Is this so?
Paul Sears Ottawa, Canada