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Effect of urea on degradation of terbuthylazine in soil

TitoloEffect of urea on degradation of terbuthylazine in soil
Tipo di pubblicazioneArticolo su Rivista peer-reviewed
Anno di Pubblicazione2005
AutoriA. Caracciolo, Barra, Giuliano Giovanni, Grenni P., Cremisini C., Ciccoli R., and Ubaldi Carla
RivistaEnvironmental Toxicology and Chemistry
Volume24
Paginazione1035-1040
ISSN07307268
Parole chiaveAgriculture, article, Atrazine, Bacteria, Biocides, Biodegradation, chemical reaction, contamination, deethylterbutylazine, Degradation, Eastern Hemisphere, Environmental, Environmental impact, Eurasia, Europe, fertilizer, Fertilizers, ground water, groundwater, herbicide, Herbicides, Italy, microbiology, nitrate, Nitrates, pesticide, Pesticides, Pollution, priority journal, Soil, soil degradation, Soil Microbiology, Soil Pollutants, Soil pollution, Soils, Southern Europe, Sterilized soils, Terbuthylazine, terbutylazine, Time Factors, triazine derivative, Triazines, unclassified drug, Urea, Water pollution, World
Abstract

Pesticide and nitrate contamination of soil and groundwater from agriculture is an environmental and public health concern worldwide. The herbicide terbuthylazine (CBET) has replaced atrazine in Italy and in many other countries because the use of the latter has been banned because of its adverse environmental impacts. Unlike atrazine, knowledge about the fate of CBET in soil is still not extensive, especially regarding its transformation products, but recent monitoring data show its occurrence and that of its main metabolite, desethyl-terbuthylazine (CBAT), in groundwater above the limit of 0.1 μg/L established by European Union Directive and Italian legislation. The objective of this work was to investigate if the presence of the fertilizer urea affects CBET degradation in the soil. Laboratory CBET degradation experiments in the presence/absence of urea were performed with microbiologically active soil and sterilized soil. Terbuthylazine degradation rates under the different experimental conditions were assessed, and the formation, degradation, and transformation of the metabolite CBAT were also studied. Terbuthylazine degradation was affected by the presence of urea, in terms both of a higher disappearance time of 50% of the initial concentration and of a lower amount of CBAT formed. These findings have practical implications for the real-life assessment of the environmental fate of triazine herbicides in agricultural areas since these herbicides are frequently applied to soils receiving ureic fertilizers. © 2005 SETAC.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-18244361829&doi=10.1897%2f04-253R.1&partnerID=40&md5=23bc5e8d4d920e7c79e0340621e465f6
DOI10.1897/04-253R.1
Citation KeyBarraCaracciolo20051035