Evaluating Nitrogen Management Options for Reducing Nitrate Leaching from Northeast U.S. Pastures
Substantial amounts of nitrate nitrogen NO3-N can leach from intensively grazed pasture in the northeast U.S. where there is about 30 cm of groundwater recharge, annually. Management options for reducing NO3-N leaching were evaluated for this environment using the Cornell Net Carbohydrate and Protei...
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| Format: | Article |
| Language: | English |
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Wiley
2001-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1100/tsw.2001.253 |
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| author | William L. Stout James E. Delahoy Laurence D. Muller Louis S. Saporito |
| author_facet | William L. Stout James E. Delahoy Laurence D. Muller Louis S. Saporito |
| author_sort | William L. Stout |
| collection | DOAJ |
| description | Substantial amounts of nitrate nitrogen NO3-N can leach from intensively grazed pasture in the northeast U.S. where there is about 30 cm of groundwater recharge, annually. Management options for reducing NO3-N leaching were evaluated for this environment using the Cornell Net Carbohydrate and Protein System Model and a recently developed nitrogen leaching index. Management options utilizing energy supplementation of grazing dairy cows could improve nitrogen efficiency within the cow, but would not necessarily reduce NO3-N leaching at the pasture scale if stocking rate was not controlled. The management option of using white clover to supply nitrogen to the pasture decreased NO3-N leaching, but produced less dry matter yield, which in turn reduced stocking rate. The economic returns of reducing NO3-N with these options need to be evaluated in light of milk prices and commodity and fertilizer nitrogen costs. At current prices and costs, the economic benefit from the energy supplementation options is substantial. |
| format | Article |
| id | doaj-art-3031d58797104a56a3f6381a57e6ab4c |
| institution | Kabale University |
| issn | 1537-744X |
| language | English |
| publishDate | 2001-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-3031d58797104a56a3f6381a57e6ab4c2025-02-03T01:29:18ZengWileyThe Scientific World Journal1537-744X2001-01-01188789110.1100/tsw.2001.253Evaluating Nitrogen Management Options for Reducing Nitrate Leaching from Northeast U.S. PasturesWilliam L. Stout0James E. Delahoy1Laurence D. Muller2Louis S. Saporito3The United States Department of Agriculture/Agricultural Research Service, University Park, PA 16802, USAThe United States Department of Agriculture/Agricultural Research Service, University Park, PA 16802, USAThe United States Department of Agriculture/Agricultural Research Service, University Park, PA 16802, USAThe United States Department of Agriculture/Agricultural Research Service, University Park, PA 16802, USASubstantial amounts of nitrate nitrogen NO3-N can leach from intensively grazed pasture in the northeast U.S. where there is about 30 cm of groundwater recharge, annually. Management options for reducing NO3-N leaching were evaluated for this environment using the Cornell Net Carbohydrate and Protein System Model and a recently developed nitrogen leaching index. Management options utilizing energy supplementation of grazing dairy cows could improve nitrogen efficiency within the cow, but would not necessarily reduce NO3-N leaching at the pasture scale if stocking rate was not controlled. The management option of using white clover to supply nitrogen to the pasture decreased NO3-N leaching, but produced less dry matter yield, which in turn reduced stocking rate. The economic returns of reducing NO3-N with these options need to be evaluated in light of milk prices and commodity and fertilizer nitrogen costs. At current prices and costs, the economic benefit from the energy supplementation options is substantial.http://dx.doi.org/10.1100/tsw.2001.253 |
| spellingShingle | William L. Stout James E. Delahoy Laurence D. Muller Louis S. Saporito Evaluating Nitrogen Management Options for Reducing Nitrate Leaching from Northeast U.S. Pastures The Scientific World Journal |
| title | Evaluating Nitrogen Management Options for Reducing Nitrate Leaching from Northeast U.S. Pastures |
| title_full | Evaluating Nitrogen Management Options for Reducing Nitrate Leaching from Northeast U.S. Pastures |
| title_fullStr | Evaluating Nitrogen Management Options for Reducing Nitrate Leaching from Northeast U.S. Pastures |
| title_full_unstemmed | Evaluating Nitrogen Management Options for Reducing Nitrate Leaching from Northeast U.S. Pastures |
| title_short | Evaluating Nitrogen Management Options for Reducing Nitrate Leaching from Northeast U.S. Pastures |
| title_sort | evaluating nitrogen management options for reducing nitrate leaching from northeast u s pastures |
| url | http://dx.doi.org/10.1100/tsw.2001.253 |
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