Sulfur and zinc availability from co-granulated Zn-Enriched rlemental sulfur fertilizers

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dc.contributor.authorMattiello, E.
dc.contributor.authorDa Silva, R.
dc.contributor.authorDegryse, F.
dc.contributor.authorBaird, R.
dc.contributor.authorGupta, V.
dc.contributor.authorMcLaughlin, M.
dc.date.issued2017
dc.description.abstractAcidification by oxidation of elemental sulfur (ES) can solubilize ZnO, providing slow release of both sulfur (S) and zinc (Zn) in soil. For this study, a new granular fertilizer with ES and ZnO was produced and evaluated. The effect of incorporating microorganisms or a carbon source in the granule was also evaluated. Four granulated ES−Zn fertilizers with and without S-oxidizing microorganisms, a commercial ES pastille, ZnSO4, and ZnO were applied to the center of Petri dishes containing two contrasting pH soils. Soil pH, CaCl2-extractable S and Zn, and remaining ES were evaluated at 30 and 60 days in two soil sections (0−5 and 5−9 mm from the fertilizer application site). A visualization test was performed to evaluate Zn diffusion over time. A significant pH decrease was observed in the acidic soil for all ES−Zn fertilizer treatments and in the alkaline soil for the Acidithiobacillus thiooxidans-inoculated treatment only. In agreement with Zn visualization tests, extractable- Zn concentrations were higher from the point of application in the acidic (62.9 mg dm−3) compared to the alkaline soil (5.5 mg dm−3). Elemental S oxidation was greater in the acidic soil (20.9%) than slightly alkaline soil (12%). The ES−Zn granular fertilizers increased S and Zn concentrations in soil and can provide a strategically slow release of nutrients to the soil.
dc.description.statementofresponsibilityEdson M. Mattiello, Rodrigo C. da Silva, Fien Degryse, Roslyn Baird, Vadakattu V. S. R. Gupta and Michael J. McLaughlin
dc.identifier.citationJournal of Agricultural and Food Chemistry, 2017; 65(6):1108-1115
dc.identifier.doi10.1021/acs.jafc.6b04586
dc.identifier.issn0021-8561
dc.identifier.issn1520-5118
dc.identifier.orcidDa Silva, R. [0000-0002-2345-3729]
dc.identifier.orcidDegryse, F. [0000-0002-4875-2944]
dc.identifier.orcidBaird, R. [0000-0002-1269-0323]
dc.identifier.orcidMcLaughlin, M. [0000-0001-6796-4144]
dc.identifier.urihttp://hdl.handle.net/2440/104610
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.rights© 2017 American Chemical Society
dc.source.urihttps://doi.org/10.1021/acs.jafc.6b04586
dc.subjectAspergillus niger; Acidithiobacillus thiooxidans; sulfur oxidation; ZnO; micronutrients; Zn diffusion
dc.titleSulfur and zinc availability from co-granulated Zn-Enriched rlemental sulfur fertilizers
dc.typeJournal article
pubs.publication-statusPublished

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