English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/60349
Share/Impact:
Statistics
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:
Title

Ethylcellulose formulations for controlled release of the herbicide alachlor in a sandy soil

AuthorsSopeña Vázquez, F. ; Cabrera Mesa, Alegría ; Maqueda Porras, Celia ; Morillo González, Esmeralda
Issue Date2007
PublisherAmerican Chemical Society
CitationJournal of Agricultural and Food Chemistry 55(20): 8200- 8205 (2007)
AbstractThe development of controlled-release formulations of alachlor to diminish its leaching in sandy soils, avoiding groundwater contamination and maintaining its efficacy, was studied. For this purpose, ethylcellulose (EC) microencapsulated formulations (MEFs) of alachlor were prepared under different conditions and applied to soil columns to study their mobility. The results show that in all cases the release into water of alachlor from MEFs was retarded when compared with commercial formulation. Total leaching losses in soil columns were reduced to 59% from 98%. The mobility of alachlor from EC microspheres into soil columns has been greatly diminished in comparison with its current commercial formulation (CF), above all with increasing EC/herbicide ratios. Distribution of alachlor applied as MEFs at different depths in the soil was higher in the soil surface (66.3-81.3% of herbicide applied at the first 12 cm). In contrast, the residues from CF along the complete soil column were only 20.4%. From the results of bioassays, MEFs showed a higher efficacy than CF at 30 days after the treatment. The use of ME formulations could provide an advantage in minimizing the risk of groundwater contamination by alachlor and reducing the application rates, as a result of maintaining the desired concentration of the herbicide in the top soil layer, obtaining longer periods of weed control.
URIhttp://hdl.handle.net/10261/60349
DOI10.1021/jf071459g
Identifiersdoi: 10.1021/jf071459g
issn: 0021-8561
Appears in Collections:(IRNAS) Artículos
Files in This Item:
File Description SizeFormat 
Ethylcellulose formulations for controlled release of the herbicide.pdf273,22 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.