Synthesis of Fe-Modified EDDHA Complexes and Their Application for Fe Micro-Nutrition for Plants

Document Type : Research Article

Authors

1 Department of Chemistry, University of Maragheh, Maragheh, I.R. IRAN

2 Department of Horticulture, Faculty of Agriculture, University of Maragheh, Maragheh, I.R. IRAN

3 Institute of Cellular and Molecular Medicine, Urmia University of Medical Sciences, Urmia, I.R. IRAN

4 Department of Biology, University of Maragheh, Maragheh, I.R. IRAN

5 Department of Chemistry, University of Saskatchewan,110 Science Place, Saskatoon, SK S7N 5C9, CANADA

Abstract

In the current research work, the idea is to find an iron-chelating agent to nourish plants and eventually feed humans and reduce the lack of iron in people's nutrition. In this work EDDHA, the most applied chelating agent for agricultural purposes was modified to reduce its high solubility in water and improve its stability under sunlight. The high solubility of EDDHA in water causes the plant to lose the applied solution in the next watering and not have enough time to absorb the nutrition. With this modification, EDDHA is able to tolerate sunlight which has a strong UV portion. This UV irradiation causes the conventional EDDHA to isomerize and lose the valuable Fe ions but with the new and improved EDDHA there is no room for isomerization. The effect of prepared chelates on chlorophyll production, average leaf length and Width, and average plant length was investigated.

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[1] Kim S. A., Guerinot M. L., Mining Iron: Iron Uptake and Transport in Plants, FEBS Lett., 581: 2273-2280 (2007).
[2] Caballero R., Ordovás J., Pajuelo P., Carmona E., Delgado A., Iron Chlorosis in Gerber as Related to Properties of Various Types of Compost Used as Growing Media, Commun. Soil Sci. Plant Anal., 38: 2357-2369 (2007).
[3] Rojas C.L., Romera F.J., Alcántara E., Pérez-Vicente R., Sariego C., García-Alonso J.I., Boned J., Marti G., Efficacy of Fe(o,o-EDDHA) and Fe(o,p-EDDHA) Isomers in Supplying Fe to Strategy I Plants Differs in Nutrient Solution and Calcareous Soil, J. Agr. Food Chem., 56: 10774-10778 (2008).
[4] Hernández-Apaolaza L., García-Marco S., Nadal P., Lucena J. J., Sierra M. A., Gómez-Gallego M., Ramírez-López P., Escudero R., Structure and Fertilizer Properties of Byproducts Formed n the Synthesis of EDDHA, J. Agr. Food Chem., 54: 4355-4363 (2006).
[5] Schenkeveld W., Temminghoff E., The Effectiveness of FeEDDHA Chelates in Mending and Preventing Iron Chlorosis in Soil-Grown Soybean Plants, in "Soybean Physiology and Biochemistry", InTech (2011).
[6] Norvell W., Reactions of Metal Chelates in Soils and Nutrient Solutions, Micronutrients Agr., 187-227 (1991).
[7] Álvarez-Fernández A., Garc─▒a-Marco S., Lucena J.J., Evaluation of Synthetic iron (III)-Chelates (EDDHA/Fe3+, EDDHMA/Fe3+ and the Novel EDDHSA/Fe3+) to Correct Iron Chlorosis, European Journal of Agronomy, 22: 119-130 (2005).
[9] Abbas G., Khan M., Khan M., Hussain F., Hussain I., Effect of Iron on the Growth and Yield Contributing Parameters of Wheat (Triticum aestivum L.), J. Anim. Plant Sci, 19: 135-139 (2009).
[10] Pinto A., Mota A. d., De Varennes A., Pinto F., Influence of Organic Matter on the Uptake of Cadmium, Zinc, Copper and Iron by Sorghum Plants, Sci. Total Environ., 326: 239-247 (2004).