Skip to main content

Chelates in agriculture

Abstract

Within the past 20–25 years it has been recognized that many of the micronutrient requirements of plants could be supplied by complexes containing chelated metals. These chelates find uses in a wide variety of agricultural crops such as: corn, bush beans, cucumbers and citrus groves. Applications vary from fertilizer additives and seed dressing to foliar sprays and hydroponics. The chelates themselves have chemical structures that seem to be limited only by the chemists imagination. The critical factors for the use of any of these chelates is the stability constant and the cost to prepare a pound of chelated metal such as iron or zinc. A comparison of costs for a few of the more common chelates indicates a need for agricultural studies on the results of using glucoheptonates for supplying micronutrients.

This is a preview of subscription content, access via your institution.

References

  1. Werner A (1893) Anorg U Allgem Chem 3: 267

    Google Scholar 

  2. Morgan GT and Drew HDK (1920) J Chem Soc 117: 1456

    Google Scholar 

  3. Jacobson L (1951) Plant Physiol 26: 411

    Google Scholar 

  4. Weast RC (1985) ‘Handbook of Chemistry and Physics. 65th ed CRC Press, Cleveland, Ohio

    Google Scholar 

  5. Martell AE and Smith RM Critical Stability Constants. Plenum Press, New York, New York

  6. Gonzalez Velasco J, Ortega J and Sancho J (1975) J An Quim 71: 706

    Google Scholar 

  7. (a) Wallace A (1971) A Decade of Synthetic Chelating Agents in Inorganic Plant Nutrition. Edwards Brothers, Inc. Ann Arbor, Michigan (b) Wallace A (1971) Regulation of the Micronutrient Status of Plants by Chelating Agents and Other Factors. Edwards Brothers, Inc Ann Arbor, Michigan (c) Wallace A (1983) A One-Decade Update on Chelated Metals for Supplying Micronutrients to Crops. J Plant Nutr 6(6): 429

    Google Scholar 

  8. Whistler RL and Chen C (1987) Unpublished Article. Department of Biochemistry, Purdue University, West Lafayette, Indiana

    Google Scholar 

  9. Holstein AG (1960) Unpublished Report. Pfanstiehl Laboratories, Inc. Waukegan, Illinois

    Google Scholar 

  10. Shishniashvili ME, Goguadze MI and Khorlin A Ya (1974) Khelaty Met Prir Soedin Ikh Primen. 1: 26; Chem Abstr 1976, 84: 74545n

    Google Scholar 

  11. Gray KR (1980) US Patent 4181516

  12. Chem Eng News (1983) 61: 451

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Clemens, D.F., Whitehurst, B.M. & Whitehurst, G.B. Chelates in agriculture. Fertilizer Research 25, 127–131 (1990). https://doi.org/10.1007/BF01095092

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01095092

Keywords

  • Iron
  • Zinc
  • Corn
  • Critical Factor
  • Stability Constant