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Re: [APD] Ferrous or Chelated Iron?


         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:




>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.

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