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| Web URL(s): | https://dl.sciencesocieties.org/publications/jeq/articles/33/2/637
Last checked: 11/07/2016
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https://dl.sciencesocieties.org/publications/jeq/pdfs/33/2637
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| Publication Type:
| Refereed |
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| Author(s): | Decau, M. L.;
Simon, J. C.;
Jacquet, A. |
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| Author Affiliation: | Université de Caen, Caen, France |
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| Title: | Nitrate leaching under grassland as affected by mineral nitrogen fertilization and cattle urine |
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| Section: | Plant and environment interactions
Other records with the "Plant and environment interactions" Section
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| Source: | Journal of Environmental Quality. Vol. 33, No. 2, March/April 2004, p. 637-644. |
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| Publishing Information: | Madison, Wisconsin: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America |
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| # of Pages: | 8 |
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| Keywords: | TIC Keywords: Nitrogen; Leaching; Grasslands; Nitrogen fertilization; Urine; Grazing; Drainage water; Drainage
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| Abstract/Contents: | "An experiment was performed to better understand to what extent nitrogen fertilization rate and date and amount of urine deposition, when acting in combination, influence nitrate leaching under grassland. Leaching was studied during two successive winters using 2-m2 grassed lysimeters under three levels of N fertilization (0, 150, and 300 kg N ha-1 yr-1, referred to as 0N, 150N, and 300N, respectively), two levels of 15N-labeled urine (105 and 165 kg N ha-1, referred to as A2 and A3 respectively), and three dates of urine application (spring, summer, and fall). During the first winter, total N leaching losses varied between 2 and 50 kg N ha-1. When tested in combination, N applied as urine to grassland resulted in three times the total N loss by leaching that occurred following N fertilization in the first winter (4.3, 20.8, 34.9, 14.2, 17.1, and 28.7 kg NO3- ha-1 for no urine, A2, A3, 0N, 150N, AND 300N, respectively). Leaching of 15N urine significantly depended on the date of application: 6.6, 17.3, and 29.1 kg for spring, summer, and fall respectively. A similar pattern was observed for the contribution of 15N urine to total N leaching with 4.3, 12,9, and 21,4%. However, urine application, both in terms of amount and date, showed very little long-term effect on these N losses in Year 2. In our conditions of low winter rainfall and drainage, grazing management (through season, urinary N amounts, and urine N concentration) resulted in a higher impact on water nitrate quality than moderate N fertilization management." |
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| Language: | English |
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| References: | 36 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Decau, M. L., J. C. Simon, and A. Jacquet. 2004. Nitrate leaching under grassland as affected by mineral nitrogen fertilization and cattle urine. J. Environ. Qual. 33(2):p. 637-644. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/jeq/articles/33/2/637
Last checked: 11/07/2016
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/jeq/pdfs/33/2637
Last checked: 11/08/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: S 900 .J6 |
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