English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/146998
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Influence of Herbicide Triasulfuron on Soil Microbial Community in an Unamended Soil and a Soil Amended with Organic Residues

AutorPose Juan, Eva ; Igual, José Mariano ; Sánchez Martín, M. Jesús ; Rodríguez Cruz, M. Sonia
Palabras claveHerbicide
Soil
Amendments
Dissipation
Microbial function
Microbial structure
Fecha de publicación2017
EditorFrontiers Media
CitaciónFrontiers in Microbiology 8:378 (2017)
ResumenThe effect of organic amendments and pesticides on a soil microbial community has garnered considerable interest due to the involvement of microorganisms in numerous soil conservation and maintenance reactions. The aim of this work was to assess the influence on a soil microbial community of the simultaneous application of the herbicide triasulfuron at three doses (2, 10, and 50 mg kg-1), with an organic amendment [sewage sludge (SS) or green compost (GC)]. Dissipation kinetics, soil microbial biomass, dehydrogenase activity (DHA) and respiration, and the profile of phospholipid fatty acids (PLFAs) extracted from the soil, were determined in unamended (S) soil and amended (S+SS and S+GC) ones. Triasulfuron dissipation followed the single first-order kinetics model. Half-life (DT50) values were higher in the amended soils than in the unamended one for the 10 and 50 mg kg-1 doses. The dissipation rates were lower in the S+GC soil for the three herbicide doses applied. In general, soil biomass, DHA and respiration values increased in SS- and GC-amended soils compared to the unamended one. DHA values decreased (S and S+SS) or increased (S+GC) with the incubation time of soil with herbicide at the different doses applied. Respiration values increased with the herbicide doses applied and decreased with the incubation time, although maximum values were obtained for soils treated with the highest dose after 70 days of incubation. PLFA analysis indicated different effects of triasulfuron on the soil microbial community structure depending on the organic amendments. While the increasing triasulfuron doses resulted in deeper alterations in the S soil, the time after triasulfuron application was the most important variation in the S+SS and S+GC soils. The overall results indicate that the soil amendment has an effect on herbicide dissipation rate and the soil microbial community. Initially, a high dose of triasulfuron had detrimental effects on the soil microbial community, which is important in the case of the long-term use of this compound.
Descripción12 páginas, 6 figuras, 3 tablas. -- This Document is Protected by copyright and was first published by Frontiers. All rights reserved. it is reproduced with permission.
Versión del editorhttps://doi.org/10.3389/fmicb.2017.00378
URIhttp://hdl.handle.net/10261/146998
DOI10.3389/fmicb.2017.00378
E-ISSN1664-302X
Aparece en las colecciones: (IRNASA) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Influence of Herbicide Triasulfuronon Soil Microbial Community in anUnamended Soil and a Soil Amendedwith Organic Residues.pdfArtículo principal1,68 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.