Conclusion And Future Outlook

In this chapter Fe-chelates have been presented as the most efficient, but expensive, fertilizers to correct Fe chlorosis. Their chemical equilibria, the sorption into soil surfaces, the plant acquisition of Fe from chelates and the remobilization of Fe from native forms present in soils seems to play important roles in their mechanism of action, but the quality and effectiveness of commercial products can still be considerably improved.

In the future, research should focus on the synthesis and characterization of new Fe chelating agents, selected not only on the basis of a high stability constant but also according to their capability to deliver Fe to the plant and on the possibility to produce highly pure commercial products at a lower cost.

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