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Web URL(s): | https://dl.sciencesocieties.org/publications/jeq/pdfs/28/6/JEQ0280061810 Last checked: 12/12/2016 Requires: PDF Reader Notes: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | Owens, L. B.;
Edwards, W. M.;
Van Keuren, R. W. |
Author Affiliation: | Owens, Edwards: USDA-ARS, North Appalachian Experimental Watershed, Coshocton, OH; Keuren: Department of Horticulture and Crop Science, Ohio State University - Ohio Agricultural Resources Development Center, Wooster, OH |
Title: | Nitrate leaching from grassed lysimeters treated with ammonium nitrate or slow-release nitrogen fertilizer |
Section: | Technical reports: Vadose zone processes and chemical transport Other records with the "Technical reports: Vadose zone processes and chemical transport" Section
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Source: | Journal of Environmental Quality. Vol. 28, No. 6, November/December 1999, p. 1810-1816. |
Publishing Information: | Madison, Wisconsin: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America |
# of Pages: | 7 |
Related Web URL: | https://dl.sciencesocieties.org/publications/jeq/abstracts/28/6/JEQ0280061810 Last checked: 12/12/2016 Requires: PDF Reader Notes: Abstract only |
Keywords: | TIC Keywords: Vadose zone water; Leaching; Nitrates; Ammonium nitrate; Methylene urea; Soil water retention; Bulk density; Particle size; Exchangeable cations; Carbon; Dactylis glomerata; Poa pratensis; Bromus inermis; Hydrology; Nitrogen fate; Grasslands; Nitrogen fertilizers; Slow-release fertilizers; Seasonal variation; Lysimeters
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Facility Names: | North Appalachian Experimental Watershed |
Geographic Terms: | Coshocton, Ohio |
Abstract/Contents: | "Nitrate leaching is a potential in humid regions when crops and forages are fertilized. This study was conducted to compare NO₃ leahing with two different N fertilizer formulations applied to forages. For 11 yr, ammonium nitrate (AN) was applied to a large (8.1 m² surface area), undisturbed, monolithic lysimeter Y101B at an annual rate of 168 kg N ha⁻¹, and methylene urea (MU), a slow-release fertilizer, was applied to a similar lysimeter (Y101D) at the same rate. Nitrate-N concentrations in the percolate for these 2.4 m-deep lysimeters were measured weekly. Even though NO₃-N levels increased steadily with the AN applications, the greatest increases occurred during the eighth year of treatment and reached levels above 20 mg L⁻¹. With the MU, NO₃-N concentrations remained relatively constant until after 8 yr of treatment, reaching concentrations of 6 mg L⁻¹. The highest rates of annual NO₃-N transport in percolate were 42.3 and 12.1 kg ha⁻¹ from lysimeters treated with AN and MU, respectively. (Losses from NH₃ volatilization were measured at 12.0 and 44.8 kg N ha⁻¹ for AN and MU, respectively.) Nitrate-N transport in percolate varied seasonally with the greatest amounts being moved during the late winter-early spring. Following 11 yr, the NO₃-N concentrations in each lysimeter declined to approximately 1 mg L⁻¹. Based on this study with a 168 kg N ha⁻¹ annual application rate, less NO₃-N leaching will occur when a slow-release N fertilizer, such as MU, is applied to forages than when AN is applied." |
Language: | English |
References: | 29 |
Note: | Tables Figures Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Owens, L. B., W. M. Edwards, and R. W. Van Keuren. 1999. Nitrate leaching from grassed lysimeters treated with ammonium nitrate or slow-release nitrogen fertilizer. J. Environ. Qual. 28(6):p. 1810-1816. |
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| Web URL(s): https://dl.sciencesocieties.org/publications/jeq/pdfs/28/6/JEQ0280061810 Last checked: 12/12/2016 Requires: PDF Reader Notes: Item is within a limited-access website |
| MSU catalog number: S 900 .J6 |
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