Transport of oxytetracycline, chlortetracycline, and ivermectin in surface runoff from irrigated pasture
| Autor: | Sanjai J. Parikh, Inna E. Popova, Daniel A. Bair, Kenneth W. Tate |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Irrigation
vegetative filter strip Agricultural Irrigation Environmental Science and Management Filter strip surface runoff environmental exposure Chemical Oxytetracycline 010501 environmental sciences Toxicology complex mixtures 01 natural sciences Pasture California medicine Animals Soil Pollutants Water Pollutants chlortetracycline oxytetracyline Veterinary pharmaceuticals 0105 earth and related environmental sciences geography sorption Ivermectin geography.geographical_feature_category fungi 04 agricultural and veterinary sciences General Medicine Environmental exposure irrigated pasture Pollution Manure Agronomy Public Health and Health Services 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science Cattle Surface runoff Surface water Water Pollutants Chemical Chlortetracycline Food Science medicine.drug |
| Zdroj: | Bair, DA; Popova, IE; Tate, KW; & Parikh, SJ. (2017). Transport of oxytetracycline, chlortetracycline, and ivermectin in surface runoff from irrigated pasture. Journal of Environmental Science and Health-Part B Pesticides, Food Contaminants, and Agricultural Wastes, 52(9), 631-640. doi: 10.1080/03601234.2017.1330069. UC Davis: Retrieved from: http://www.escholarship.org/uc/item/4kt46826 Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes, vol 52, iss 9 |
| Popis: | © 2017 Taylor & Francis Group, LLC. The transport of oxytetracycline, chlortetracycline, and ivermectin from manure was assessed via surface runoff on irrigated pasture. Surface runoff plots in the Sierra Foothills of Northern California were used to evaluate the effects of irrigation water application rates, pharmaceutical application conditions, vegetative cover, and vegetative filter strip length on the pharmaceutical discharge in surface runoff. Experiments were designed to permit the maximum potential transport of pharmaceuticals to surface runoff water, which included pre-irrigation to saturate soil, trimming grass where manure was applied, and laying a continuous manure strip perpendicular to the flow of water. However, due to high sorption of the pharmaceuticals to manure and soil, less than 0.1% of applied pharmaceuticals were detected in runoff water. Results demonstrated an increase of pharmaceutical transport in surface runoff with increased pharmaceutical concentration in manure, the concentration of pharmaceuticals in runoff water remained constant with increased irrigation flow rate, and no appreciable decrease in pharmaceutical runoff was produced with the vegetative filter strip length increased from 30.5 to 91.5 cm. Most of the applied pharmaceuticals were retained in the manure or within the upper 5 cm of soil directly beneath the manure application sites. As this study evaluated conditions for high transport potential, the data suggest that the risk for significant chlortetracycline, oxytetracycline, and ivermectin transport to surface water from cattle manure on irrigated pasture is low. |
| Databáze: | OpenAIRE |
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