Re: Iron oxidation states
To: Aquatic-Plants at actwin_com
Subject: Re: Iron oxidation states
From: psears at emr_ca (Paul Sears)
Date: Tue, 26 Mar 1996 08:42:11 -0500 (EST)
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