Document Type

Report

Publisher

Utah State University

Publication Date

2021

First Page

1

Last Page

3

Abstract

Ferric iron rapidly precipitates as FeOH and becomes biologically unavailable, so chelated iron is commonly used in liquid fertilization systems to keep it in solution. The most common chelating agents in agriculture are:

  • EDDHA (ethylenediamine-N,N'-bis(2-hydroxyphenylacetic acid)
  • DTPA (diethylenetriaminepentaacetic acid)
  • EDTA (ethylenediaminetetraacetic acid)
  • and for monocots in deep-flow hydroponics, HEDTA (also called HEEDTA)

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