Sorption and desorption of glyphosate in Mollisols and Ultisols soils of Argentina

Autor:	Gómez Ortiz, Ana Maria, Okada, Elena, Bedmar, Francisco, Costa, Jose Luis
Jazyk:	angličtina
Rok vydání:	2017
Předmět:	purl.org/becyt/ford/1 [https] DESORPTION purl.org/becyt/ford/1.5 [https] SOIL PROPERTIES GLYPHOSATE Meteorología y Ciencias Atmosféricas SORPTION CIENCIAS NATURALES Y EXACTAS Ciencias de la Tierra y relacionadas con el Medio Ambiente
Zdroj:	CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET
DOI:	10.1002/etc.3851
Popis:	In Argentina, glyphosate use has increased exponentially in the past years due to the widespread adoption of no-till management combined with genetically modified glyphosate-resistant crops. This massive use of glyphosate has created concern about its potential environmental impact. Sorption-desorption of glyphosate was studied in three Argentinean soils with contrasting characteristics. Glyphosate sorption isotherms were modeled using the Freundlich equation to estimate the sorption coefficient (Kf). Glyphosate sorption was high and the Kf varied from 115.6 to 1612 mg 1-1/nL1/n /Kg. Cerro Azul soil had the highest glyphosate sorption capacity due to a combination of factors such as higher clay content, CEC, total Fe, Al oxides and lower available phosphorous and pH. Desorption isotherms were also modeled using the Freundlich equation. In general, desorption was very low (
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::7f54a750ff8af8a4d84863a3b8b629a2 http://doi.wiley.com/10.1002/etc.3851 Zobrazit plný text záznamu