Soil Scntst
ypachepsky@anri.barc.usda.gov
Phone: (301) 504-7468
Fax: (301) 504-6608
Room 203
10300 BALTIMORE BLVD
BLDG 173 BARC-EAST
BELTSVILLE, MD, 20705

Project List

	Pathogen Transport and Dissemination from Manure
	Pathogenic Bacteria Breakthrough in Soils As Affected by Physical Meterogeneity
	Model Abstraction Techniques for Soil Water Flow and Transport

Publications

	Model Abstraction to Assess Uncertainty in Flow and Transport Modeling- (13-Sep-04)
	Model Abstraction Approach in Soil Water Balance Simulations- (19-Jul-04)
	Using Regression Trees to Estimate Surface Water Runoff and Soil Erosion for Rangelands- (01-Jun-04)
	Model Abstraction Techniques: An Overivew of Applications in Agricultural Contaminant- (01-Jun-04)
	Applications of Fractal Geometry in Soil Hydrology- (11-May-04)
	Complexity of Simulated Soil Water Fluxes- (01-May-04)
	Modeling Fate and Transport of Manure-Borne Pathogens in the Environment- (01-Feb-04)
	Seepage in Soils: Principles and Applications- (29-Jan-04)
	Two-Dimenional Representation and Modeling of Bromide and Microbial Transport at a Hillslope Grass Buffer- (13-Jan-04)
	Soil Aggregates and Water Retention- (22-Dec-03)
	Developing Pedotransfer Functions with Database Exploration Methods- (22-Dec-03)
	Comparison of Batch and Flow Experimental Data on Retention of Manure-Borne Cryptosporidium Parvum Oocysts in Soils- (02-Dec-03)
	Zoonotic Pathogens from Manure: Transport and Fate- (19-Nov-03)
	Fractal Analysis of Soils- (17-Nov-03)
	Using Similarity and Neural Network Approaches to Interpolate Soil Particle-Size Distributions Ecological Modeling- (10-Nov-03)
	Mass-Size Scaling in Soil Aggregates As Affected by Aggregate Moisture Content and Soil Compaction- (24-Sep-03)
	Modeling Surface and Subsurface Transport of Manure-Borne Pathogens- (15-Jul-03)
	Model Abstraction Techniques Related to Parameter Estimation and Uncertainty- (01-Jul-03)
	Transport of Manure-Borne Cryptosporidium Parvum Oocysts Through Saturated and Unsaturated Soil Columns- (01-Jul-03)
	Using Fractal Models in Scaling and Pedotransfer Functions of Soil Hydraulic Properties- (01-Jun-03)
	Modeling Surface and Subsurface Transport of Manure-Borne Microorganisms- (08-Apr-03)
	Scaling in Soil Aggregate Distribution As Dependent on Aggregate Water Content and Soil Compaction- (05-Feb-03)
	Transport of Manure-Borne Bacteria and Colloids in a Stony Soil- (31-Jan-03)
	Modeling Manure-Borne Pathogen Transport with Runoff and Infiltration- (23-Jan-03)
	Modeling Soybean Vegetative Development Using Data from the Mississippi Valley- (15-Jan-03)
	How Does the Physics of the Soil System Dictate Dispersal of Waste-Borne Microorganism in Soils?- (17-Dec-02)
	Scaling Methods in Soil Physics- (30-Sep-02)
	The Additivity Model to Estimate Water Retention of Mineral Soils- (28-Aug-02)
	Generalized Richards' Equation to Simulate Water Transport in Soils- (08-Jul-02)
	Conventional and Fractal Geometry in Soil Studies- (17-Jun-02)
	Mass Fractal Dimension of Shrinking Soil Aggregates- (17-Jun-02)
	Soil Structure and Pedotransfer Functions- (13-Jun-02)
	Scaling and Fractional Equations of Water and Contaminant Transport in Soils- (03-May-02)
	Using Similarity and Neural Network Approaches to Interpolate Soil Particle-Size Distributions- (25-Nov-01)
	Scaling in Soil Structure and Pedotransfer Functions- (30-Sep-01)
	Scale Effects- (01-Jul-01)
	Comment on the Letter-to-the-Editor "on the Characteristic Aggregate Size for Estimating Fractal Dimensions of Soil"- (13-Feb-01)
	Fractional Advective-Dispersive Equation to Simulate Solute Transport in Soils- (09-Dec-00)
	Soil Water Retention As Affected by Scale: Comparison of Field and Laboratory Data- (03-Nov-00)
	Soil Water Retention As Related to the Topographic Variables- (01-Sep-00)
	Soil Name As a Source of Soil Hydraulic Properties:testing the Muuf Pedotransfer Model- (01-Sep-00)
	A One-Parameter Relationship Between Unsaturated Hydraulic Conductivity Andwater Retention- (30-Jul-00)
	Soil Water Retention As Related to Topographic Variables- (01-Jun-00)
	Bibliography on Applications of Fractals in Soil Science- (01-May-00)
	Conventional and Fractal Geometry in Soil Science- (01-May-00)
	Soil Name As a Source of Soil Hydraulic Properties for Regional Simulations: Testing the Muuf Pedotransfer Model- (01-May-00)
	Scale-Dependent Pedotransfer Functions- (04-Feb-00)
	Explorative Analysis of the Database on Rangeland Runoff and Erosion Experiments- (19-Jul-04)
	Distribution of Manure-Borne Fecal Coliforms in Soil on Grass Buffer Strip- (10-Jun-04)
	Transport and Retention of E. Coli in Saturated Well-Structured Soil- (15-Mar-04)
	Faciliatated Manure-Borne Bacteria Transport in Soil Columns- (13-Jan-04)
	Facilitated Manure-Borne Bacteria Transport in Soil Columns- (01-Sep-03)
	Detection and Characterization of Pathogenic E. Coli in Surface Waters: Implications for Preharvest Produce- (01-Aug-03)
	Entropy-Based Analysis of Texture to Estimate Soil Hydraulic Proprties- (23-Jul-03)
	Use of Soil Survey Information for Determining Soil Hydraulic Properties- (15-Jun-03)
	Entrophy-Based Analysis of Texture to Estimate Soil Hydraulic Properties- (01-Jun-03)
	Modeling Manure-Borne Pathogen Transport with Runoff and Infiltration- (01-Jun-03)
	Time-Mass Scaling in Soil Texture Analysis- (05-May-03)
	Release Rates of Manure-Borne Coliform Bacteria from Data on Leaching Through Stony Soil- (06-Jan-03)
	Comparision of Two Approximation Techniques to Develop Pedotransfer Functions for Water Retention of Brazilian Soils- (11-Dec-02)
	Modeling Coliform Bacteria and Bromide Transport in Large in-Situ Columns of a Fractured Soil- (10-Nov-02)
	A Mix of Scales: Topographic Information, Point Samples and Yield Maps- (30-Sep-02)
	A Mix of Scales: Topographic Information, Point Samples and Yield Maps- (10-Sep-02)
	A Mix of Scales: Topographic Information, Point Samples, Yield Maps and Remotely Sensed Data- (10-Sep-02)
	Use of Soil Survey Information for Determining Soil Hydraulic Properties- (01-Sep-02)
	Analytical Solutions for the Non-Equilibrium Salt Transport in Unsaturated Soil Affected by the Groundwater Salinity- (01-Sep-02)
	Simulating Spatial Patterns of Corn Root Development in Controlled Environment Experiment- (03-Aug-02)
	Use of Soil Survey Information for Determining Soil Hydraulic Parameters for Hydrologic Modeling- (01-Aug-02)
	Use of Soil Survey Information for Determining Soil Hydraulic Parameters for Hydrologic Modeling- (01-Jun-02)
	Using Field Topographic Descriptors to Estimate Soil Water Retention- (15-May-02)
	Using Similarity and Neural Network Approaches to Interpolate Soil Particle-Size Distributions- (01-Apr-02)
	Characterization of Water Availability in Landscape Using Several Sources of Data.- (03-Mar-02)
	Temperature Effects on Node Development Rates in Cotton- (20-Dec-01)
	Evaluation of Methods to Estimate Macropore Characteristics in Montmorillonitic Clay Soils- (29-Nov-01)
	Translating Available Basic Soil Data into Mission Soil Hydraulic Characteristics- (02-Nov-01)
	Soil Consistence and Structure As Predictors of Water Retention- (01-Nov-01)
	Inferring Soil Hydraulic Properties from Soil Organic Carbon- (01-Oct-01)
	Pedotransfer Functions: Bridging the Gap Between Available Basic Soil Data and Missing Soil Hydraulic Data: Their Development, Uncertainty and Practical Use in Modelling- (01-Sep-01)
	Using Spatial Variance Information from Remotely Sensed Imagery to Map Cropfoliage Density- (01-Sep-01)
	Error Analysis of Soil Temperature Simulations Using Measured and Estimatedhourly Weather Data with 2dsoil- (01-Sep-01)
	Testing Soil Water Retention Estimation with the Muuf Pedotranfer Model Using Data from the Southern United States- (15-Aug-01)
	Statistical Properties of Soil Moisture Images Revisited- (01-Aug-01)
	Infiltration Measurement Using a Vertical Time-Domain Reflectometry Porbe and a Reflection Simulation Model- (01-Aug-01)
	Testing the Convective-Dispersive Model of Two-Dimensional Root Growth and Proliferation in a Greenhouse Experiment with Maize Plants- (15-May-01)
	The Use of a Water Budget Model and Yield Maps to Characterize Water Availability in a Landscape- (03-Oct-00)
	Soil Water Retention As Affected by Scale:comparison of Field and Laboratory Data- (01-Sep-00)
	Effect of Climate and Atmospheric Change on Soybean Water Stress: a Study of Iowa- (01-Jun-00)
	Status of Pedotransfer Functions- (02-Mar-00)
	Transport and Retention of E. Coli in Saturated Structured Soil- (13-Sep-04)
	Modeling Canopy Development and Photosynthesis in Potato- (12-Nov-03)
	Characterization of Subsurface Flow Regime with Hydrus-2d Simulations- (02-Sep-03)
	Water Retention Pedotransfer Function for a Horizon- (02-Sep-03)
	Water Retention Pedotransfer Function for a Horizon- (02-Sep-03)
	Mass-Size Scaling in Soil Aggregates As Affected by Aggregate Moisture Contents and Soil Compaction- (01-Jun-03)
	Two-Dimensional Representation and Modeling of Bromide and Fecal Coliform Transport with Runoff and Infiltration- (01-Jun-03)
	Movement of Manure-Borne Bacteria in Soils As a Colloid-Facilitated Transport Affected by Soil Structure- (01-May-03)
	2dspud, a Two-Dimensional Model of Potato Growth and Development.- (19-Apr-03)
	Use of Spatial Variance Information from Remote Sensing Imagery to Map Vegetation Foliage Density- (01-Dec-02)
	2dspud, a Two-Dimensional Model of Potato Growth and Development- (11-Nov-02)
	Linking Within-Field Crop Response with Soil Characteristics- (01-Oct-02)
	Effect of Soil Aggregate Size Distribution on Water Retention- (28-Aug-02)
	Translating Available Basic Soil Data into Missing Soil Hydraulic Characteristics- (16-Aug-02)
	Effect of Soil Organic Carbon on Soil Water Retention- (01-Jul-02)
	Exploiting Image Spatial Variance for Vegetation Patterns- (20-May-02)
	Estimating Soil Water Retention Using Soil Component Additivity Model- (01-Apr-02)
	Spatial Distribution of Surface Soil Water under a Cornfield- (12-Mar-02)
	Spatial Regression of Crop Parameters with Airborne Spectral Imagery- (12-Feb-02)
	Using Spatial Autoregression and Conditional Simulations to Quantify Relationships for Geospatial Data- (07-Nov-01)
	Soil Moisture from Passive Microwave Imagery Data: Mapping and Geostatistical Analysis- (01-Nov-01)
	Soil Moisture Mapping with Passive Microwave Imagery Data and Geostatistical Analysis- (10-Jul-01)
	Validation Data Bases for Crop Simulators: Design, Assembling Delivery, and Use- (31-Dec-00)
	Estimating Water Retention from Soil Profile Descriptions- (20-Oct-00)
	Airborne Laser Technology for Measuring Rangeland Conditions- (09-Jul-00)
	Soil Pore Surface Properties in Managed Grasslands- (01-Jun-00)
	Estimating Water Retention of Sandy Soils Using the Additivity Hypothesis- (13-Apr-00)
	Uncertainty in Soil Water Flow Simulations with Various Parameter Sources- (19-Jul-04)
	Estimation of Viable Escherichia Coli 0157 in Surface Waters Using Enrichment in Conjunction with Immunological Detection- (26-Mar-04)
	Effect of Soil Aggregate Size Distribution on Water Retention- (10-Jun-03)
	Comparing Small Scale Spatial Relationships of Surface Soil Water- (10-Nov-02)
	Field-Scale Monitoring and Simulation of the Overland Transport of Bromide and Pathogens- (28-Aug-02)
	Pathogen Transport Affected by Surface Conditions- (27-Feb-02)
	Using Spatial Variance Information from Remote Sensing Imagery to Map Crop Foliage Density- (04-Nov-01)
	Soil Compactibility As Related to Organic Carbon and Water Contents- (01-Aug-00)
	Release and Partitioning of Manure-Borne Phosphorus and Fecal Coliforms- (19-Jul-04)
	Specific Area of a Typic Hapludult As Affected by the Addition of Organic Matter- (01-Jul-03)
	Measuring the Specific Surface Area of Soil Using Nitrogen: Variation Due to the Addition of Organic Matter- (15-Dec-02)
	Linking Within-Field Crop Response with Soil Characteristics to Define Cropresponse Zones- (27-Aug-01)