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https://locus.ufv.br//handle/123456789/19440
Tipo: | Artigo |
Título: | Sulfur and zinc availability from co-granulated Zn-enriched elemental sulfur fertilizers |
Autor(es): | Mattiello, Edson M. Silva, Rodrigo C. da Degryse, Fien Baird, Roslyn Gupta, Vadakattu V. S. R. McLaughlin, Michael J. |
Abstract: | Acidification 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. |
Palavras-chave: | Acidithiobacillus thiooxidans Aspergillus niger Micronutrients Sulfur oxidation Zn diffusion ZnO |
Editor: | Journal of Agricultural and Food Chemistry |
Tipo de Acesso: | American Chemical Society |
URI: | http://dx.doi.org/10.1021/acs.jafc.6b04586 http://www.locus.ufv.br/handle/123456789/19440 |
Data do documento: | 27-Jan-2017 |
Aparece nas coleções: | Solos - Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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artigo.pdf Until 2100-12-31 | Texto completo | 4,34 MB | Adobe PDF | Visualizar/Abrir ACESSO RESTRITO |
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