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| DOI: | 10.1002/ps.4530 |
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| Web URL(s): | https://onlinelibrary.wiley.com/doi/full/10.1002/ps.4530
Last checked: 04/11/2018
Access conditions: Item is within a limited-access website
https://onlinelibrary.wiley.com/doi/pdf/10.1002/ps.4530
Last checked: 04/11/2018
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Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Hall, Kathleen E.;
Spokas, Kurt A.;
Gamiz, Beatriz;
Cox, Lucia;
Papiernik, Sharon K.;
Koskinen, William C. |
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| Author Affiliation: | Hall and Koskinen: University of Minnesota, St Paul, MN; Spokas: USDA-Agricultural Research Service, St Paul, MN; Gamiz and Cox: Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS-CSIC), Seville, Spain; Papiernik: USDA-Agricultural Research Service, Brookings, SD |
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| Title: | Glyphosate sorption/desorption on biochars - Interactions of physical and chemical processes |
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| Source: | Pest Management Science. Vol. 74, No. 5, May 2018, p. 1206-1212. |
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| Publishing Information: | Barking, Essex, United Kingdom: Elsevier Science Publishers Ltd. |
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| # of Pages: | 7 |
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| Related Web URL: | https://onlinelibrary.wiley.com/doi/abs/10.1002/ps.4530
Last checked: 04/11/2018
Notes: Abstract only |
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| Keywords: | TIC Keywords: Biochar; Desorption; Glyphosate; Groundwater contamination; Pesticide interaction; Phosphates; Sorption
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| Abstract/Contents: | "BACKGROUND: Biochar, a carbon-rich product of biomass pyrolysis, could limit glyphosate transport in soil and remediate contaminated water. The present study investigates the sorption/desorption behavior of glyphosate on biochars prepared from different hardwoods at temperatures ranging from 350 to 900 ° C to elucidate fundamental mechanisms. RESULTS: Glyphosate (1 mg L-1) sorption on biochars increased with pyrolysis temperature and was highest on 900 ° C biochars; however, total sorption was low on a mass basis (<0.1 mg g-1). Sorption varied across feedstock materials, and isotherms indicated concentration dependence. Biochars with a greater fraction of micropores exhibited lower sorption capacities, and specific surface groups were also found to be influential. Prepyrolysis treatments with iron and copper, which complex glyphosate in soils, did not alter biochar sorption capacities. Glyphosate did not desorb from biochar with CaCl2 solution; however, up to 86% of the bound glyphosate was released with a K2HPO4 solution. CONCLUSION: Results from this study suggest a combined impact of surface chemistry and physical constraints on glyphosate sorption/desorption on biochar. Based on the observed phosphate-induced desorption of glyphosate, the addition of P-fertilizer to biochar-amended soils can remobilize the herbicide and damage non-target plants; therefore, improved understanding of this risk is necessary." |
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| Language: | English |
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| References: | 41 |
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| Note: | "Special Issue: Glyphosate"
Pictures, b/w
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hall, K. E., B. Gamiz, L. Cox, S. K. Papiernik, and W. C. Koskinen. 2018. Glyphosate sorption/desorption on biochars - Interactions of physical and chemical processes. Pest Management Science. 74(5):p. 1206-1212. |
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| DOI: 10.1002/ps.4530 |
| Web URL(s):
https://onlinelibrary.wiley.com/doi/full/10.1002/ps.4530
Last checked: 04/11/2018
Access conditions: Item is within a limited-access website
https://onlinelibrary.wiley.com/doi/pdf/10.1002/ps.4530
Last checked: 04/11/2018
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2219665 |
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