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EM Identity and Description

EM Identification (* Note that run information is shown only where run data differ from the "parent" entry shown at left)

EM ID em.detail.idHelp ?	EM-584	Baseline	Manure application at twice the crop phosphorus requirement (2P rate)	Manure application at the crop phosphorus requirement (P rate)	15 m filter strip at edge of fields (Filter strip)	15 m riparian forest buffer (Forest buffer)
EM Short Name em.detail.shortNameHelp ?	Nutrient Tracking Tool (NTT), north central Texas, USA	*	*	*	*	*
EM Full Name em.detail.fullNameHelp ?	Nutrient Tracking Tool (NTT), Upper North Bosque River watershed, Texas, USA	*	*	*	*	*
EM Source or Collection em.detail.emSourceOrCollectionHelp ?	None	*	*	*	*	*
EM Source Document ID	354	*	*	*	*	*
Document Author em.detail.documentAuthorHelp ?	Saleh, A., O. Gallego, E. Osei, H. Lal, C. Gross, S. McKinney, and H. Cover	*	*	*	*	*
Document Year em.detail.documentYearHelp ?	2011	*	*	*	*	*
Document Title em.detail.sourceIdHelp ?	Nutrient Tracking Tool - a user-friendly tool for calculating nutrient reductions for water quality trading	*	*	*	*	*
Document Status em.detail.statusCategoryHelp ?	Peer reviewed and published	*	*	*	*	*
Comments on Status em.detail.commentsOnStatusHelp ?	Published journal manuscript	*	*	*	*	*

Software and Access (* Note that run information is shown only where run data differ from the "parent" entry shown at left)

EM ID em.detail.idHelp ?	EM-584	Baseline	Manure application at twice the crop phosphorus requirement (2P rate)	Manure application at the crop phosphorus requirement (P rate)	15 m filter strip at edge of fields (Filter strip)	15 m riparian forest buffer (Forest buffer)
EM Software Access info Exit em.detail.modelAccessInformationHelp ?	http://ntt.tiaer.tarleton.edu/welcomes/new?locale=en	*	*	*	*	*
Contact Name em.detail.contactNameHelp ?	Ali Saleh	*	*	*	*	*
Contact Address	Texas Institute for Applied Environmental Research-Tarleton State University, Stephenville, TX 76401,USA	*	*	*	*	*
Contact Email	saleh@tiaer.tarleton.edu	*	*	*	*	*

EM Description (* Note that run information is shown only where run data differ from the "parent" entry shown at left)

EM ID em.detail.idHelp ?	EM-584	Baseline	Manure application at twice the crop phosphorus requirement (2P rate)	Manure application at the crop phosphorus requirement (P rate)	15 m filter strip at edge of fields (Filter strip)	15 m riparian forest buffer (Forest buffer)
Summary Description em.detail.summaryDescriptionHelp ?	ABSTRACT: "The Nutrient Tracking Tool (NTrT) is an enhanced version of the Nitrogen Trading Tool, a user-friendly Web-based computer program originally developed by the USDA. The NTrT estimates nutrient (nitrogen and phosphorus) and sediment losses from fields managed under a variety of cropping patterns and management practices through its user-friendly, Web-based linkage to the Agricultural Policy Environmental eXtender (APEX) model. It also accesses the USDA Natural Resources Conservation Service’s Web Soil Survey to utilize their geographic information system interface for field and operation identification and load soil information. The NTrT provides farmers, government officials, and other users with a fast and efficient method of estimating nitrogen and phosphorus credits for water quality trading, as well as other water quality, water quantity, and farm production impacts associated with conservation practices. The information obtained from the tool can help farmers determine the most cost-effective conservation practice alternatives for their individual operations and provide them with more advantageous options in a water quality credit trading program. An application of the NTrT to evaluate conservation practices on fields receiving dairy manure in a north central Texas watershed indicates that phosphorus-based application rates, filter strips, forest buffers, and complete manure export off the farm all result in reduced phosphorus losses from the fields on which those practices were implemented. When compared to a base¬line condition that entailed manure application at the nitrogen agronomic rate of receiving crops, the reductions in total phosphorus losses associated with these practices ranged from 15% (2P Rate scenario) to 76% (forest buffer scenario)." AUTHOR'S DESCRIPTION: "This paper provides a brief overview of the NTrT and presents results of verification and application of the tool on a selected field on a test field in the Upper North Bosque River (UNBR) watershed in Texas…simulations for the baseline and all five alternative scenarios were replicated for each of 90 specific soil types in Erath County, Texas…results reported and discussed in this report represent the averages of the output for all soil types."	ABSTRACT: "The Nutrient Tracking Tool (NTrT) is an enhanced version of the Nitrogen Trading Tool, a user-friendly Web-based computer program originally developed by the USDA. The NTrT estimates nutrient (nitrogen and phosphorus) and sediment losses from fields managed under a variety of cropping patterns and management practices through its user-friendly, Web-based linkage to the Agricultural Policy Environmental eXtender (APEX) model. It also accesses the USDA Natural Resources Conservation Service’s Web Soil Survey to utilize their geographic information system interface for field and operation identification and load soil information. The NTrT provides farmers, government officials, and other users with a fast and efficient method of estimating nitrogen and phosphorus credits for water quality trading, as well as other water quality, water quantity, and farm production impacts associated with conservation practices. The information obtained from the tool can help farmers determine the most cost-effective conservation practice alternatives for their individual operations and provide them with more advantageous options in a water quality credit trading program. An application of the NTrT to evaluate conservation practices on fields receiving dairy manure in a north central Texas watershed indicates that phosphorus-based application rates, filter strips, forest buffers, and complete manure export off the farm all result in reduced phosphorus losses from the fields on which those practices were implemented. When compared to a baseline condition that entailed manure application at the nitrogen agronomic rate of receiving crops, the reductions in total phosphorus losses associated with these practices ranged from 15% (2P Rate scenario) to 76% (forest buffer scenario)." AUTHOR'S DESCRIPTION: "This paper provides a brief overview of the NTrT and presents results of verification and application of the tool on a selected field on a test field in the Upper North Bosque River (UNBR) watershed in Texas…simulations for the baseline and all five alternative scenarios were replicated for each of 90 specific soil types in Erath County, Texas…results reported and discussed in this report represent the averages of the output for all soil types."	ABSTRACT: "The Nutrient Tracking Tool (NTrT) is an enhanced version of the Nitrogen Trading Tool, a user-friendly Web-based computer program originally developed by the USDA. The NTrT estimates nutrient (nitrogen and phosphorus) and sediment losses from fields managed under a variety of cropping patterns and management practices through its user-friendly, Web-based linkage to the Agricultural Policy Environmental eXtender (APEX) model. It also accesses the USDA Natural Resources Conservation Service’s Web Soil Survey to utilize their geographic information system interface for field and operation identification and load soil information. The NTrT provides farmers, government officials, and other users with a fast and efficient method of estimating nitrogen and phosphorus credits for water quality trading, as well as other water quality, water quantity, and farm production impacts associated with conservation practices. The information obtained from the tool can help farmers determine the most cost-effective conservation practice alternatives for their individual operations and provide them with more advantageous options in a water quality credit trading program. An application of the NTrT to evaluate conservation practices on fields receiving dairy manure in a north central Texas watershed indicates that phosphorus-based application rates, filter strips, forest buffers, and complete manure export off the farm all result in reduced phosphorus losses from the fields on which those practices were implemented. When compared to a baseline condition that entailed manure application at the nitrogen agronomic rate of receiving crops, the reductions in total phosphorus losses associated with these practices ranged from 15% (2P Rate scenario) to 76% (forest buffer scenario)." AUTHOR'S DESCRIPTION: "This paper provides a brief overview of the NTrT and presents results of verification and application of the tool on a selected field on a test field in the Upper North Bosque River (UNBR) watershed in Texas…simulations for the baseline and all five alternative scenarios were replicated for each of 90 specific soil types in Erath County, Texas…results reported and discussed in this report represent the averages of the output for all soil types."	ABSTRACT: "The Nutrient Tracking Tool (NTrT) is an enhanced version of the Nitrogen Trading Tool, a user-friendly Web-based computer program originally developed by the USDA. The NTrT estimates nutrient (nitrogen and phosphorus) and sediment losses from fields managed under a variety of cropping patterns and management practices through its user-friendly, Web-based linkage to the Agricultural Policy Environmental eXtender (APEX) model. It also accesses the USDA Natural Resources Conservation Service’s Web Soil Survey to utilize their geographic information system interface for field and operation identification and load soil information. The NTrT provides farmers, government officials, and other users with a fast and efficient method of estimating nitrogen and phosphorus credits for water quality trading, as well as other water quality, water quantity, and farm production impacts associated with conservation practices. The information obtained from the tool can help farmers determine the most cost-effective conservation practice alternatives for their individual operations and provide them with more advantageous options in a water quality credit trading program. An application of the NTrT to evaluate conservation practices on fields receiving dairy manure in a north central Texas watershed indicates that phosphorus-based application rates, filter strips, forest buffers, and complete manure export off the farm all result in reduced phosphorus losses from the fields on which those practices were implemented. When compared to a baseline condition that entailed manure application at the nitrogen agronomic rate of receiving crops, the reductions in total phosphorus losses associated with these practices ranged from 15% (2P Rate scenario) to 76% (forest buffer scenario)." AUTHOR'S DESCRIPTION: "This paper provides a brief overview of the NTrT and presents results of verification and application of the tool on a selected field on a test field in the Upper North Bosque River (UNBR) watershed in Texas…simulations for the baseline and all five alternative scenarios were replicated for each of 90 specific soil types in Erath County, Texas…results reported and discussed in this report represent the averages of the output for all soil types."	ABSTRACT: "The Nutrient Tracking Tool (NTrT) is an enhanced version of the Nitrogen Trading Tool, a user-friendly Web-based computer program originally developed by the USDA. The NTrT estimates nutrient (nitrogen and phosphorus) and sediment losses from fields managed under a variety of cropping patterns and management practices through its user-friendly, Web-based linkage to the Agricultural Policy Environmental eXtender (APEX) model. It also accesses the USDA Natural Resources Conservation Service’s Web Soil Survey to utilize their geographic information system interface for field and operation identification and load soil information. The NTrT provides farmers, government officials, and other users with a fast and efficient method of estimating nitrogen and phosphorus credits for water quality trading, as well as other water quality, water quantity, and farm production impacts associated with conservation practices. The information obtained from the tool can help farmers determine the most cost-effective conservation practice alternatives for their individual operations and provide them with more advantageous options in a water quality credit trading program. An application of the NTrT to evaluate conservation practices on fields receiving dairy manure in a north central Texas watershed indicates that phosphorus-based application rates, filter strips, forest buffers, and complete manure export off the farm all result in reduced phosphorus losses from the fields on which those practices were implemented. When compared to a baseline condition that entailed manure application at the nitrogen agronomic rate of receiving crops, the reductions in total phosphorus losses associated with these practices ranged from 15% (2P Rate scenario) to 76% (forest buffer scenario)." AUTHOR'S DESCRIPTION: "This paper provides a brief overview of the NTrT and presents results of verification and application of the tool on a selected field on a test field in the Upper North Bosque River (UNBR) watershed in Texas…simulations for the baseline and all five alternative scenarios were replicated for each of 90 specific soil types in Erath County, Texas…results reported and discussed in this report represent the averages of the output for all soil types."	ABSTRACT: "The Nutrient Tracking Tool (NTrT) is an enhanced version of the Nitrogen Trading Tool, a user-friendly Web-based computer program originally developed by the USDA. The NTrT estimates nutrient (nitrogen and phosphorus) and sediment losses from fields managed under a variety of cropping patterns and management practices through its user-friendly, Web-based linkage to the Agricultural Policy Environmental eXtender (APEX) model. It also accesses the USDA Natural Resources Conservation Service’s Web Soil Survey to utilize their geographic information system interface for field and operation identification and load soil information. The NTrT provides farmers, government officials, and other users with a fast and efficient method of estimating nitrogen and phosphorus credits for water quality trading, as well as other water quality, water quantity, and farm production impacts associated with conservation practices. The information obtained from the tool can help farmers determine the most cost-effective conservation practice alternatives for their individual operations and provide them with more advantageous options in a water quality credit trading program. An application of the NTrT to evaluate conservation practices on fields receiving dairy manure in a north central Texas watershed indicates that phosphorus-based application rates, filter strips, forest buffers, and complete manure export off the farm all result in reduced phosphorus losses from the fields on which those practices were implemented. When compared to a baseline condition that entailed manure application at the nitrogen agronomic rate of receiving crops, the reductions in total phosphorus losses associated with these practices ranged from 15% (2P Rate scenario) to 76% (forest buffer scenario)." AUTHOR'S DESCRIPTION: "This paper provides a brief overview of the NTrT and presents results of verification and application of the tool on a selected field on a test field in the Upper North Bosque River (UNBR) watershed in Texas…simulations for the baseline and all five alternative scenarios were replicated for each of 90 specific soil types in Erath County, Texas…results reported and discussed in this report represent the averages of the output for all soil types."
Specific Policy or Decision Context Cited em.detail.policyDecisionContextHelp ?	None identified	*	*	*	*	*
Biophysical Context	The UNBR watershed is comprised primarily of two main physiographic areas, the West Cross Timbers and the Grand Prairie Land Resource Areas. In the West Cross Timbers, soils are primarily fine sandy loams with sandy clay subsoils. Soils in the Grand Prairie area, on the other hand, are typically calcareous clays and clay loams (Ward et al. 1992).	*	*	*	*	*
EM Scenario Drivers em.detail.scenarioDriverHelp ?	Conservation management strategies to reduce phosphorus losses	*	*	*	*	*

EM Relationship to Other EMs or Applications

EM ID em.detail.idHelp ?	EM-584	Baseline	Manure application at twice the crop phosphorus requirement (2P rate)	Manure application at the crop phosphorus requirement (P rate)	15 m filter strip at edge of fields (Filter strip)	15 m riparian forest buffer (Forest buffer)
Method Only, Application of Method or Model Run em.detail.methodOrAppHelp ?	Method + Application (multiple runs exist)	Model Run Associated with a Specific EM Application	Model Run Associated with a Specific EM Application	Model Run Associated with a Specific EM Application	Model Run Associated with a Specific EM Application	Model Run Associated with a Specific EM Application
New or Pre-existing EM? em.detail.newOrExistHelp ?	New or revised model	Baseline	Manure application at twice the crop phosphorus requirement (2P rate)	Manure application at the crop phosphorus requirement (P rate)	15 m filter strip at edge of fields (Filter strip)	15 m riparian forest buffer (Forest buffer)

Related EMs (for example, other versions or derivations of this EM) described in ESML

EM ID em.detail.idHelp ?	EM-584	Baseline	Manure application at twice the crop phosphorus requirement (2P rate)	Manure application at the crop phosphorus requirement (P rate)	15 m filter strip at edge of fields (Filter strip)	15 m riparian forest buffer (Forest buffer)
Document ID for related EM em.detail.relatedEmDocumentIdHelp ?	Doc-352	Doc-352	Doc-352	Doc-352	Doc-352	Doc-352
EM ID for related EM em.detail.relatedEmEmIdHelp ?	EM-549	None	None	None	None	None

EM Modeling Approach

EM Relationship to Time (* Note that run information is shown only where run data differ from the "parent" entry shown at left)

EM ID em.detail.idHelp ?	EM-584	Baseline	Manure application at twice the crop phosphorus requirement (2P rate)	Manure application at the crop phosphorus requirement (P rate)	15 m filter strip at edge of fields (Filter strip)	15 m riparian forest buffer (Forest buffer)
EM Temporal Extent em.detail.tempExtentHelp ?	1960-2001	*	*	*	*	*
EM Time Dependence em.detail.timeDependencyHelp ?	time-dependent	*	*	*	*	*
EM Time Reference (Future/Past) em.detail.futurePastHelp ?	future time	*	*	*	*	*
EM Time Continuity em.detail.continueDiscreteHelp ?	discrete	*	*	*	*	*
EM Temporal Grain Size Value em.detail.tempGrainSizeHelp ?	1	*	*	*	*	*
EM Temporal Grain Size Unit em.detail.tempGrainSizeUnitHelp ?	Day	*	*	*	*	*

EM spatial extent (* Note that run information is shown only where run data differ from the "parent" entry shown at left)

EM ID em.detail.idHelp ?	EM-584	Baseline	Manure application at twice the crop phosphorus requirement (2P rate)	Manure application at the crop phosphorus requirement (P rate)	15 m filter strip at edge of fields (Filter strip)	15 m riparian forest buffer (Forest buffer)
Bounding Type em.detail.boundingTypeHelp ?	Watershed/Catchment/HUC	*	*	*	*	*
Spatial Extent Name em.detail.extentNameHelp ?	Upper North Bosque River watershed	*	*	*	*	*
Spatial Extent Area (Magnitude) em.detail.extentAreaHelp ?	100-1000 km^2	*	*	*	*	*

Spatial Distribution of Computations (* Note that run information is shown only where run data differ from the "parent" entry shown at left)

EM ID em.detail.idHelp ?	EM-584	Baseline	Manure application at twice the crop phosphorus requirement (2P rate)	Manure application at the crop phosphorus requirement (P rate)	15 m filter strip at edge of fields (Filter strip)	15 m riparian forest buffer (Forest buffer)
EM Spatial Distribution em.detail.distributeLumpHelp ?	spatially lumped (in all cases)	*	*	*	*	*
Spatial Grain Type em.detail.spGrainTypeHelp ?	Not applicable	*	*	*	*	*
Spatial Grain Size em.detail.spGrainSizeHelp ?	Not applicable	*	*	*	*	*

EM Structure and Computation Approach (* Note that run information is shown only where run data differ from the "parent" entry shown at left)

EM ID em.detail.idHelp ?	EM-584	Baseline	Manure application at twice the crop phosphorus requirement (2P rate)	Manure application at the crop phosphorus requirement (P rate)	15 m filter strip at edge of fields (Filter strip)	15 m riparian forest buffer (Forest buffer)
EM Computational Approach em.detail.emComputationalApproachHelp ?	Numeric	*	*	*	*	*
EM Determinism em.detail.deterStochHelp ?	deterministic	*	*	*	*	*
Statistical Estimation of EM em.detail.statisticalEstimationHelp ?	Conventional (frequentist) statistics	*	*	*	*	*

Model Checking Procedures Used (* Note that run information is shown only where run data differ from the "parent" entry shown at left)

EM ID em.detail.idHelp ?	EM-584	Baseline	Manure application at twice the crop phosphorus requirement (2P rate)	Manure application at the crop phosphorus requirement (P rate)	15 m filter strip at edge of fields (Filter strip)	15 m riparian forest buffer (Forest buffer)
Model Calibration Reported? em.detail.calibrationHelp ?	Yes	*	*	*	*	*
Model Goodness of Fit Reported? em.detail.goodnessFitHelp ?	No	*	*	*	*	*
Goodness of Fit (metric\| value \| unit) em.detail.goodnessFitValuesHelp ?	None	*	*	*	*	*
Model Operational Validation Reported? em.detail.validationHelp ?	No	*	*	*	*	*
Model Uncertainty Analysis Reported? em.detail.uncertaintyAnalysisHelp ?	No	*	*	*	*	*
Model Sensitivity Analysis Reported? em.detail.sensAnalysisHelp ?	No	*	*	*	*	*
Model Sensitivity Analysis Include Interactions? em.detail.interactionConsiderHelp ?	Not applicable	*	*	*	*	*

EM Locations, Environments, Ecology

Location of EM Application (* Note that run information is shown only where run data differ from the "parent" entry shown at left)

Terrestrial location (Classification hierarchy: Continent > Country > U.S. State [United States only])

EM-584	Baseline	Manure application at twice the crop phosphorus requirement (2P rate)	Manure application at the crop phosphorus requirement (P rate)	15 m filter strip at edge of fields (Filter strip)	15 m riparian forest buffer (Forest buffer)
North America United States Texas	*	*	*	*	*

Marine location (Classification hierarchy: Realm > Region > Province > Ecoregion)

EM-584	Baseline	Manure application at twice the crop phosphorus requirement (2P rate)	Manure application at the crop phosphorus requirement (P rate)	15 m filter strip at edge of fields (Filter strip)	15 m riparian forest buffer (Forest buffer)
None	*	*	*	*	*

Centroid Lat/Long (Decimal Degree)

EM ID em.detail.idHelp ?	EM-584	Baseline	Manure application at twice the crop phosphorus requirement (2P rate)	Manure application at the crop phosphorus requirement (P rate)	15 m filter strip at edge of fields (Filter strip)	15 m riparian forest buffer (Forest buffer)
Centroid Latitude em.detail.ddLatHelp ?	32.09	*	*	*	*	*
Centroid Longitude em.detail.ddLongHelp ?	-98.12	*	*	*	*	*
Centroid Datum em.detail.datumHelp ?	WGS84	*	*	*	*	*
Centroid Coordinates Status em.detail.coordinateStatusHelp ?	Estimated	*	*	*	*	*

Environments and Scales Modeled (* Note that run information is shown only where run data differ from the "parent" entry shown at left)

EM ID em.detail.idHelp ?	EM-584	Baseline	Manure application at twice the crop phosphorus requirement (2P rate)	Manure application at the crop phosphorus requirement (P rate)	15 m filter strip at edge of fields (Filter strip)	15 m riparian forest buffer (Forest buffer)
EM Environmental Sub-Class em.detail.emEnvironmentalSubclassHelp ?	Agroecosystems	*	*	*	*	*
Specific Environment Type em.detail.specificEnvTypeHelp ?	Rangeland and forage fields for dairy	*	*	*	*	*
EM Ecological Scale em.detail.ecoScaleHelp ?	Ecological scale corresponds to the Environmental Sub-class	*	*	*	*	*

Organisms modeled (* Note that run information is shown only where run data differ from the "parent" entry shown at left)

Scale of differentiation of organisms modeled

EM ID em.detail.idHelp ?	EM-584	Baseline	Manure application at twice the crop phosphorus requirement (2P rate)	Manure application at the crop phosphorus requirement (P rate)	15 m filter strip at edge of fields (Filter strip)	15 m riparian forest buffer (Forest buffer)
EM Organismal Scale em.detail.orgScaleHelp ?	Not applicable	*	*	*	*	*

Taxonomic level and name of organisms or groups identified

EM-584	Baseline	Manure application at twice the crop phosphorus requirement (2P rate)	Manure application at the crop phosphorus requirement (P rate)	15 m filter strip at edge of fields (Filter strip)	15 m riparian forest buffer (Forest buffer)
None Available	*	*	*	*	*

EnviroAtlas URL

EM-584	Baseline	Manure application at twice the crop phosphorus requirement (2P rate)	Manure application at the crop phosphorus requirement (P rate)	15 m filter strip at edge of fields (Filter strip)	15 m riparian forest buffer (Forest buffer)
GAP Ecological Systems, Agricultural water use (million gallons/day), The Watershed Boundary Dataset (WBD)	Agricultural water use (million gallons/day), The Watershed Boundary Dataset (WBD)	Agricultural water use (million gallons/day), The Watershed Boundary Dataset (WBD)	Agricultural water use (million gallons/day), The Watershed Boundary Dataset (WBD)	GAP Ecological Systems, Agricultural water use (million gallons/day), The Watershed Boundary Dataset (WBD)	GAP Ecological Systems, Agricultural water use (million gallons/day), The Watershed Boundary Dataset (WBD)

EM Ecosystem Goods and Services (EGS) potentially modeled, by classification system

* Note that run information is shown only where run data differ from the "parent" entry shown at left

CICES v 4.3 - Common International Classification of Ecosystem Services (Section > Division > Group > Class)

EM-584	Baseline	Manure application at twice the crop phosphorus requirement (2P rate)	Manure application at the crop phosphorus requirement (P rate)	15 m filter strip at edge of fields (Filter strip)	15 m riparian forest buffer (Forest buffer)
[Ecosystem] Provisioning Materials Biomass Materials from plants, algae and animals for agricultural use [Ecosystem] Regulation & Maintenance Mediation of flows Liquid flows Hydrological cycle and water flow maintenance Mass flows Mass stabilisation and control of erosion rates Mediation of waste, toxics and other nuisances Mediation by ecosystems Filtration/sequestration/storage/accumulation by ecosystems	*	*	*	*	*

National Ecosystem Services Classification System (NESCS) Plus

(Environmental Subclass > Ecological End-Product (EEP) > EEP Subclass > EEP Modifier)

EM-584	Baseline	Manure application at twice the crop phosphorus requirement (2P rate)	Manure application at the crop phosphorus requirement (P rate)	15 m filter strip at edge of fields (Filter strip)	15 m riparian forest buffer (Forest buffer)
Agroecosystems (22) Flora (5) Fodder Stock Indicator	*	*	*	*	*

EM Variable Names (and Units)

* Note that for runs, variable name is displayed only where data for that variable differed by run AND those differences were reported in the source document. Where differences occurred but were not reported, the variable is not listed. Click on variable name to view details.

To view run information for variables, select any variable below or view run data for all variables.

Predictor

EM ID em.detail.idHelp ?	EM-584	Baseline	Manure application at twice the crop phosphorus requirement (2P rate)	Manure application at the crop phosphorus requirement (P rate)	15 m filter strip at edge of fields (Filter strip)	15 m riparian forest buffer (Forest buffer)
Driving Variables (and Units) em.detail.drivingVariableHelp ?	Crop type (Not applicable)	*	*	*	*	*
Constant or Factor Variables (and Units) em.detail.constantFactorVariableHelp ?	End of season date (day of year) Fertilizer amount (commercial) (kg/ha) Fertilizer amount (manure) (t/ha) Fertilizer category (Not applicable) Fertilizer composition (commercial) (Not reported) Fertilizer depth (Not reported) Fertilizer total N concentration (manure) (kg/ha) Fertilizer total P concentration (manure) (kg/ha) Fertilizer type (Not applicable) Field (area of interest) (Not applicable) Field area (ac) Forest buffer width (m) Grass strip vegetation (Not applicable) Grass strip width (m) Harvest date (day of year) Moisture content (manure) (%) Plant method (Not applicable) Planting date (day of year) Rotation year (Not applicable) Seed amount (seeds/sq. ft.) Soil P (ppm) Soil P test (Not applicable) Soil organic matter (%) Tillage (Not applicable)	Fertilizer amount (manure) (t/ha) Fertilizer total N rate (commercial) (kg/ha) Fertilizer total N rate (manure) (kg/ha) Fertilizer total P rate (commercial) (kg/ha) Fertilizer total P rate (manure) (kg/ha)	Fertilizer amount (manure) (t/ha) Fertilizer total N rate (commercial) (kg/ha) Fertilizer total N rate (manure) (kg/ha) Fertilizer total P rate (commercial) (kg/ha) Fertilizer total P rate (manure) (kg/ha)	Fertilizer amount (manure) (t/ha) Fertilizer total N rate (commercial) (kg/ha) Fertilizer total N rate (manure) (kg/ha) Fertilizer total P rate (commercial) (kg/ha) Fertilizer total P rate (manure) (kg/ha)	Fertilizer amount (manure) (t/ha) Fertilizer total N rate (commercial) (kg/ha) Fertilizer total N rate (manure) (kg/ha) Fertilizer total P rate (commercial) (kg/ha) Fertilizer total P rate (manure) (kg/ha)	Fertilizer amount (manure) (t/ha) Fertilizer total N rate (commercial) (kg/ha) Fertilizer total N rate (manure) (kg/ha) Fertilizer total P rate (commercial) (kg/ha) Fertilizer total P rate (manure) (kg/ha)

Intermediate

EM ID em.detail.idHelp ?	EM-584	Baseline	Manure application at twice the crop phosphorus requirement (2P rate)	Manure application at the crop phosphorus requirement (P rate)	15 m filter strip at edge of fields (Filter strip)	15 m riparian forest buffer (Forest buffer)
Intermediate (Computed) Variables (and Units) em.detail.intermediateVariableHelp ?	None	*	*	*	*	*

Response

EM ID em.detail.idHelp ?	EM-584	Baseline	Manure application at twice the crop phosphorus requirement (2P rate)	Manure application at the crop phosphorus requirement (P rate)	15 m filter strip at edge of fields (Filter strip)	15 m riparian forest buffer (Forest buffer)
Observed Response Variables (and Units) em.detail.observedResponseHelp ?	Total N loss (observed) (kg/ha) Total P loss (observed) (kg/ha) Total flow loss (observed) (mm) Total sediment loss (observed) (t/ha)	*	*	*	*	*
Computed Response Variables (and Units) em.detail.computedResponseHelp ?	Change in crop yield (%) Change in total N loss (%) Change in total P loss (%) Change in total flow loss (%) Change in total sediment loss (%) Crop yield (Not reported) Total N loss (kg/ha) Total P loss (kg/ha) Total flow loss (mm) Total sediment loss (t/ha)	*	Change in total N loss (%) Change in total P loss (%) Change in total flow loss (%) Change in total sediment loss (%)	Change in total N loss (%) Change in total P loss (%) Change in total flow loss (%) Change in total sediment loss (%)	Change in total N loss (%) Change in total P loss (%) Change in total flow loss (%) Change in total sediment loss (%)	Change in total N loss (%) Change in total P loss (%) Change in total flow loss (%) Change in total sediment loss (%)

US EPA

EcoService Models Library (ESML)

View Runs

: Nutrient Tracking Tool (NTT), Upper North Bosque River watershed, Texas, USA (EM-584)