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Ecology Publications & Forms |
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Ecology Publications & Forms |
| Title | Spreadsheet Models for Determining the Influence of Land Applications of Fertilizer on Underlying Groundwater Nitrate Concentrations |
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Spreadsheet Models for Determining the Influence of Land Applications of Fertilizer on Underlying Groundwater Nitrate Concentrations (Number of pages: 49) (Publication Size: 1132KB)
Win Zip format (Publication Size: 1MB) Note: Appendix E
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| Author(s) | Pitz, C. | ||||
| Description | Contamination of groundwater by nitrate is often found in close association with nonpoint applications of nitrogen-bearing fertilizers or animal manure to agricultural lands. Due to the risk that nitrate poses to state drinking water supplies, determining the proper balance between nutrient application rates, crop uptake, and nitrate loss to groundwater is a growing priority in Washington. This report presents a set of three mass-balance spreadsheet computer models that can be used to quantitatively predict the impact of residual or excess farm-field soil nitrate on the concentration of nitrate in underlying shallow groundwater. All three models allow the user flexibility in defining site-specific model variables. Model assumptions and limitations are discussed. |
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The mission of the Department of Ecology is to protect, preserve, and enhance Washington’s environment. To help us meet that goal, please consider the environment before you print or request a copy.
ADA Accessibility The Department of Ecology is committed to providing people with disabilities access to information and services by meeting or exceeding the requirements of the Americans with Disabilities Act (ADA), Section 504 and 508 of the Rehabilitation Act, and Washington State Policy #188. Visit Ecology’s website for more information. |
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| Contact | Environmental Assessment Program at 360-407-6700 or joen461@ecy.wa.gov | ||||
| Keywords | model, nitrate, fertilizer, groundwater | ||||
| WEB PAGE | Groundwater quality assessment | ||||
| RELATED PUBLICATIONS | Title:
POSTER: Evaluation of field N budgets and soil nitrate as indicators of N leaching to groundwater in a Pacific Northwest U.S. dairy grass field |
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