Influence of Soil Type on the Mobility and Bioavailability of Chelated Zinc
- 4 April 2007
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of Agricultural and Food Chemistry
- Vol. 55 (9), 3568-3576
- https://doi.org/10.1021/jf063236g
Abstract
The objective of this study was to compare the distribution, mobility, and relative effectiveness of Zn from Zn-amino acids (Zn-AA) and Zn-DTPA-HEDTA-EDTA (Zn-CH) (DTPA, diethylenetriaminepentaacetate; HEDTA, N-2-hydroxyethyl-ethylenedinitrilotriacetate; and EDTA, ethylenedinitrilotetraacetate) sources by applying different Zn levels to weakly acidic and neutral soils in laboratory (incubation and soil column studies) and greenhouse conditions. The experiments were carried out for 60 days in incubation and column experiments and for 45 days in a greenhouse experiment. The zinc soil behavior was evaluated by DTPA-TEA and Mehlich-3 extractions and sequential speciation. The incubation experiment showed that the highest concentrations of available Zn in weakly acidic soil occurred with Zn-AA treatments, whereas in the neutral soil Zn-CH treatments produced the highest quantities of available Zn. The column experiment showed that in neutral soil, with slow to moderate permeability in the A(p) and B-t horizons, only Zn-CH significantly increased the mobility of Zn through the column with respect to the control and the Zn-AA source: 31% of the Zn applied as synthetic chelate was leached from the column. The greenhouse experiment showed that, at different rates of Zn application, the Zn carriers increased Zn uptake by maize (Zea mays L.). The use of applied Zn by maize, or Zn utilization, was greatest when the Zn treatments were Zn-CH (3.3%) at 20 mg kg(-1) and Zn-CH (4.9%) at 10 mg kg(-1), in weakly acidic and neutral soils, respectively.Keywords
This publication has 26 references indexed in Scilit:
- Zinc Transformations in Neutral Soil and Zinc Efficiency in Maize FertilizationJournal of Agricultural and Food Chemistry, 2006
- Soil–plant transfer of trace elements—an environmental issueGeoderma, 2004
- Micronutrient FertilizersJournal of Crop Production, 1998
- Fractionation of zinc in some New Zealand soilsCommunications in Soil Science and Plant Analysis, 1997
- Lixiviation and Extraction of Zinc in a Calcareous Soil Treated with Zinc-Chelated FertilizersJournal of Agricultural and Food Chemistry, 1996
- THE CHEMICAL FORMS OF ZN AND CU EXTRACTABLE BY MEHLICH 1, MEHLICH 3, AND AMMONIUM BICARBONATE-DTPA EXTRACTIONSSoil Science, 1993
- Activity measurements of zinc in soils of different pH using EDTAGeoderma, 1992
- EFFECT OF PREFLOODING ON TRANSFORMATION OF APPLIED ZINC AND ITS UPTAKE BY RICE IN LATERITIC SOILSSoil Science, 1992
- Development of a DTPA Soil Test for Zinc, Iron, Manganese, and CopperSoil Science Society of America Journal, 1978
- Comparison of Zinc Sulfate and Zine EDTA as Zine Fertilizer SourcesSoil Science Society of America Journal, 1973