Re: [APD] Ferrous or Chelated Iron?

[Raj <ggrk at blr_vsnl.net.in>]

Chas,

         Chelated iron breaks down slowly and free iron is available to plants
in smaller quantity over a longer time. Ferrous iron quickly oxidizes to Ferric
state and becomes unavailable to plants. Chelation prevents this oxidation
in a manner of speaking.

         Some more info from Eriks site:

         http://www.thekrib.com/Chemistry/fe.html

         http://www.thekrib.com/Plants/Fertilizer/flourish.html

Raj

>I had a genteleman tell me that chelated Iron is worthless to plants and
>that only ferrous iron is usable by them. Can anyone confirm or deny this
>for me? If both forms are usable, which is more desirable? Thanks, Chas.

_______________________________________________
Aquatic-Plants mailing list
Aquatic-Plants at actwin_com
http://www.actwin.com/mailman/listinfo/aquatic-plants