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| Registros recuperados: 107 | |
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| Biswas, S; Kranz, W.L.; Shapiro, C.A.; Mamo, M.; Bartlelt-Hunt, S.L.; Snow, D.D.; Tarkalson, D.D.; Shelton, D.P.; Mader, T.L.; van Donk, Simon J.; Zhang, T.C.. |
| Beef feedlot manure distributed to row crop production areas is a potential surface water contaminant source of the steroid hormones commonly used in beef cattle production. This article reports on research conducted at the University of Nebraska Haskell Agricultural Laboratory near Concord, Nebraska, in July 2009. Manure, collected from beef feedlot pens, was stockpiled for ten months prior to application to a row crop field. Previous research identified that the detection frequency of steroid hormones in beef manure varies greatly. Thus, a surrogate (17 alpha-ethynylestradiol, EE2) was applied at a rate of 75 g per ha to ensure detectable concentrations in surface runoff samples. EE2 was applied directly to beef cattle manure and to bare soil. The EE2... |
| Tipo: Article |
Palavras-chave: Manure Management; Tillage; Soil. |
| Ano: 2013 |
URL: http://eprints.nwisrl.ars.usda.gov/1554/1/1510.pdf |
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| Registros recuperados: 107 | |
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