ORIGINAL RESEARCH PAPERS:

Yongkoo Seol, Timothy J. Kneafsey, and Kazumasa Ito

An Evaluation of the Active Fracture Concept in Modeling Unsaturated Flow and Transport in a Fractured Meter-Sized Block of Rock
Simulations of flow and transport in unsaturated fractured block were used to provide synthetic data for testing the active fracture concept, a concept developed to help dual continuum models in representing heterogeneous flow patterns in fractured rock. The adequacy of the active fracture concept is evaluated based on the synthetic data.
Published online 16 December 2005; doi:10.2136/vzj2004.0175
Vadose Zone J 2005 5: 1-13. [Abstract] [Full Text] [Figures Only] [PDF]  

Uwe Buczko and Horst H. Gerke

Modeling Two-Dimensional Water Flow and Bromide Transport in a Heterogeneous Lignitic Mine Soil
Water flow and solute transport were simulated in two-dimensional vertical sections of a heterogeneous lignitic mine soil using different scenarios for the spatial distribution of hydraulic parameters. Comparison of simulated variables with in situ measured values indicates that the observed preferential flow cannot be described by spatial variability alone.
Published online 16 December 2005; doi:10.2136/vzj2005.0003
Vadose Zone J 2005 5: 14-26. [Abstract] [Full Text] [Figures Only] [PDF]  

Marcel G. Schaap and Martinus Th. van Genuchten

A Modified Mualem–van Genuchten Formulation for Improved Description of the Hydraulic Conductivity Near Saturation
The widely used Mualem-van Genuchten equation suffers from inconsistencies and systematic errors. Using data for 235 soils representing four broad textural classes, an analysis was conducted to modify the model without adding free parameters. The resulting model was found to provide improved prediction of unsaturated conductivity.
Published online 16 December 2005; doi:10.2136/vzj2005.0005
Vadose Zone J 2005 5: 27-34. [Abstract] [Full Text] [Figures Only] [PDF]  

Shin'ya Katsura, Ken'ichirou Kosugi, Nobuhiro Yamamoto, and Takahisa Mizuyama

Saturated and Unsaturated Hydraulic Conductivities and Water Retention Characteristics of Weathered Granitic Bedrock
The hydraulic properties of weathered granitic bedrock were measured in the laboratory using a permeameter, a multistep outflow apparatus, and a pressure plate apparatus. The unsaturated hydraulic properties were determined by the inverse method, and the resulting water retention curve compared with the result from the pressure plate.
Published online 16 December 2005; doi:10.2136/vzj2005.0040
Vadose Zone J 2005 5: 35-47. [Abstract] [Full Text] [Figures Only] [PDF]  

Klaus Spohrer, Ludger Herrmann, Joachim Ingwersen, and Karl Stahr

Applicability of Uni- and Bimodal Retention Functions for Water Flow Modeling in a Tropical Acrisol
Unimodal and bimodal retention functions are applied to describe the soil water characteristics of a fine-textured Acrisol in Northern Thailand. Results show that the choice of the correct retention function determines whether it is possible to derive a realistic hydraulic conductivity function and to simulate the observed water fluxes.
Published online 16 December 2005; doi:10.2136/vzj2005.0047
Vadose Zone J 2005 5: 48-58. [Abstract] [Full Text] [Figures Only] [PDF]  

J. Maximilian Köhne, Binayak P. Mohanty, and Jirka Simunek

Inverse Dual-Permeability Modeling of Preferential Water Flow in a Soil Column and Implications for Field-Scale Solute Transport
Water flow experiments were conducted using a repacked soil column with a preferential flow path.The data were utilized for inverse estimation of soil hydraulic parameters of a dual-permeability model. The implications of hydraulic parameter identification problems for simulation of solute transport are discussed.
Published online 16 December 2005; doi:10.2136/vzj2005.0008
Vadose Zone J 2005 5: 59-76. [Abstract] [Full Text] [Figures Only] [PDF]  

P. Lehmann, P. Wyss, A. Flisch, E. Lehmann, P. Vontobel, M. Krafczyk, A. Kaestner, F. Beckmann, A. Gygi, and H. Flühler

Tomographical Imaging and Mathematical Description of Porous Media Used for the Prediction of Fluid Distribution
Images of pore structures were used to quantify the pore space and compute the fluid phase distribution. The images were generated numerically or were measured using tomography with neutrons and X-rays from tubes or synchrotrons. To map the relevant pore structures, the resolution of the image must be in the range of 10% of the mean particle size.
Published online 26 January 2006; doi:10.2136/vzj2004.0177
Vadose Zone J 2006 5: 80-97. [Abstract] [Full Text] [Figures Only] [PDF]  

Victor M. Heilweil, D. Kip Solomon, and Philip M. Gardner

Borehole Environmental Tracers for Evaluating Net Infiltration and Recharge through Desert Bedrock
Environmental tracers from boreholes in a small upland basin in southwestern Utah were used for evaluating recharge to exposed and soil covered sandstone. Chloride, tritium, and stable-isotope concentrationss from different depths and locations indicate large temporal and spatial variations in recharge to this desert equifer.
Published online 26 January 2006; doi:10.2136/vzj2005.0002
Vadose Zone J 2006 5: 98-120. [Abstract] [Full Text] [Figures Only] [PDF]  

K. Noborio, R. G. Kachanoski, and C. S. Tan

Solute Transport Measurement Under Transient Field Conditions Using Time Domain Reflectometry
A set of vertically inserted TDR probes was used to estimate solute transport in the field under transient conditions. A pulse of KCl solution was applied to one TDR probe while none was applied to the other probe. Measuring water content and impedance of both probes enabled estimation of solute transport with no prior calibration.
Published online 8 March 2006; doi:10.2136/vzj2005.0019
Vadose Zone J 2006 5: 412-418. [Abstract] [Full Text] [Figures Only] [PDF]  

David L. Decker, Charalambos Papelis, Scott W. Tyler, Mark J. Logsdon, and Jirka Simunek

Arsenate and Arsenite Sorption on Carbonate Hosted Precious Metals Ore
Arsenic is prevalent in the carbonate-hosted gold ore deposits of eastern Nevada. The experimental sorption behavior of arsenate and arsenite on rock from two different mines are presented. Two pH-dependent sorption isotherm formulations are given that provide reasonable representations of the observed sorption behavior.
Published online 8 March 2006; doi:10.2136/vzj2005.0038
Vadose Zone J 2006 5: 419-429. [Abstract] [Full Text] [Figures Only] [PDF]  

David L. Decker, Jirka Simunek, Scott W. Tyler, Charalambos Papelis, and Mark J. Logsdon

Variably Saturated Reactive Transport of Arsenic in Heap-Leach Facilities
Estimating the reactive flow and transport of aqueous metal and metalloid species in variably saturated systems is a key to the successful long-term management and stewardship of remediation sites. The results of an effort to develop a numerical code to estimate arsenic flux behavior in reactive, variably saturated environments are presented.
Published online 8 March 2006; doi:10.2136/vzj2005.0039
Vadose Zone J 2006 5: 430-444. [Abstract] [Full Text] [Figures Only] [PDF]  

Kirsten Schelde, Lis W. de Jonge, Charlotte Kjaergaard, Mette Laegdsmand, and Gitte H. Rubæk

Effects of Manure Application and Plowing on Transport of Colloids and Phosphorus to Tile Drains
Field experiments showed that cultivation practices generated considerable intra-annual variability in the leaching of colloids and phosphorus (P). After slurry application in summer, dissolved P dominated the total P loss to drains. Plowing increased the concentration of colloids and P in subsurface runoff produced in a subsequent rainstorm.
Published online 8 March 2006; doi:10.2136/vzj2005.0051
Vadose Zone J 2006 5: 445-458. [Abstract] [Full Text] [Figures Only] [PDF]  

Klas Hansson and Lars-Christer Lundin

Water Content Reflectometer Application to Construction Materials and its Relation to Time Domain Reflectometry
Published online 8 March 2006; doi:10.2136/vzj2005.0053
Vadose Zone J 2006 5: 459-468. [Abstract] [Full Text] [Figures Only] [PDF]  

Kai Uwe Totsche, Steffen Jann, and Ingrid Kögel-Knabner

Release of Polycyclic Aromatic Hydrocarbons, Dissolved Organic Carbon, and Suspended Matter from Disturbed NAPL-Contaminated Gravelly Soil Material
Results on the release of polycyclic aromatic hydrocarbon, suspended particles, and dissolved organic matter from coarse textured gravelly soil material are presented. A new design for short-term column experiments is introduced which allows unique determination of effective release rates.
Published online 8 March 2006; doi:10.2136/vzj2005.0057
Vadose Zone J 2006 5: 469-479. [Abstract] [Full Text] [Figures Only] [PDF]  

Lorraine E. Flint, David C. Buesch, and Alan L. Flint

Characterization of Unsaturated Zone Hydrogeologic Units using Matrix Properties and Depositional History in a Complex Volcanic Environment
An approach and rationale for systematically evaluating hydrologic properties of rocks from unsaturated zone boreholes at Yucca Mountain,in order to develop detailed hydrogeologic units,is presented.The hydraulic parameters associated with the units are included for use in site-scale unsaturated zone modeling of the study area.
Published online 8 March 2006; doi:10.2136/vzj2004.0180
Vadose Zone J 2006 5: 480-492. [Abstract] [Full Text] [Figures Only] [PDF]  

C. Hu, S. A. Saseendran, T. R. Green, L. Ma, X. Li, and L. R. Ahuja

Evaluating Nitrogen and Water Management in a Double-Cropping System Using RZWQM
Experimental plot data from a double-cropped, wheat-corn system in the North China Plain were simulated with RZWQM, and simulations were extended to assess water and N management. Results indicate that current application rates of both water and N can be reduced by about half to minimize N leaching without affecting grain production.
Published online 8 March 2006; doi:10.2136/vzj2005.0004
Vadose Zone J 2006 5: 493-505. [Abstract] [Full Text] [Figures Only] [PDF]  

NOTES:

Charles G. Crabtree and Tina M. Seaman

Suction Lysimeter Modifications to Improve Sampling Efficiency and Prevent Wildlife Damage
Economical methods are presented to modify existing suction lysimeters to improve sampling efficiency, reduce the potential for cross-contamination, and protect lysimeters from damage by wildlife and fire.
Published online 16 December 2005; doi:10.2136/vzj2005.0049
Vadose Zone J 2005 5: 77-79. [Abstract] [Full Text] [Figures Only] [PDF]  

E. Priesack and W. Durner

Closed-Form Expression for the Multi-Modal Unsaturated Conductivity Function
An analytical expression to directly calculate the unsaturated hydraulic conductivity function from multi-modal retention functions is presented. Examples are given to demonstrate the improved applicability of multi-modal functions to estimate hydraulic parameters of structured soils.
Published online 26 January 2006; doi:10.2136/vzj2005.0066
Vadose Zone J 2006 5: 121-124. [Abstract] [Full Text] [Figures Only] [PDF]  

LETTER FROM THE EDITORS:

Jan W. Hopmans, Tissa Illangasekare, Dani Or, and Rien van Genuchten

Editorial: The Future of Vadose Zone Journal
Published online 8 March 2006; doi:10.2136/vzj2006.0002le
Vadose Zone J 2006 5: 125. [Full Text] [PDF]  

COMMENTS:

P. Groenendijk, J.G. Kroes, and J.C. Van Dam

Comments on "A Set of Analytical Benchmarks to Test Numerical Models of Flow and Transport in Soils"
Published online 8 March 2006; doi:10.2136/vzj2005.0077L
Vadose Zone J 2006 5: 126-127. [Full Text] [Figures Only] [PDF]  

J. Vanderborght, R. Kasteel, H. Vereecken, M. Javaux, M. Vanclooster, D. Thiéry, and C. Mouvet

Response to "Comments on ‘A Set of Analytical Benchmarks to Test Numerical Models of Flow and Transport in Soils’"
Published online 8 March 2006; doi:10.2136/vzj2005.0091L
Vadose Zone J 2006 5: 128. [Full Text] [PDF]  

SPECIAL SECTION: FROM FIELD- TO LANDSCAPE-SCALE VADOSE ZONE PROCESSES:

Dennis L. Corwin, Jan Hopmans, and Gerrit H. de Rooij

From Field- to Landscape-Scale Vadose Zone Processes: Scale Issues, Modeling, and Monitoring
As an introduction to the collection of papers on modeling and monitoring vadose zone processes at field to landscape scales, a brief background pertaining to scale issues is presented, followed by an overview of the special section papers and future research trends, challenges, and needs.
Published online 8 March 2006; doi:10.2136/vzj2006.0004
Vadose Zone J 2006 5: 129-139. [Abstract] [Full Text] [Figures Only] [PDF]  

P. M. Jardine, M. A. Mayes, P. J. Mulholland, P. J. Hanson, J. R. Tarver, R. J. Luxmoore, J. F. McCarthy, and G. V. Wilson

Vadose Zone Flow and Transport of Dissolved Organic Carbon at Multiple Scales in Humid Regimes
The fate and transport of dissolved organic carbon (DOC) in a weathered Ultisol across a wide range of spatial scales was studied. The purpose was to interpret processes observed at various scales and to help clarify the mechanisms of coupled hydrogeochemical control of DOC mobility and sequestration in deep subsoils within humid climatic regimes.
Published online 8 March 2006; doi:10.2136/vzj2005.0036
Vadose Zone J 2006 5: 140-152. [Abstract] [Full Text] [Figures Only] [PDF]  

Jon Olav Skøien and Günter Blöschl

Scale Effects in Estimating the Variogram and Implications for Soil Hydrology
The choice of sampling scale triplet (spacing, extent, and support) will lead to biases in estimated variograms of soil variability. We generated numerous random fields and estimated variograms based on samples from these fields with the weighted least squares and the maximum likelihood methods. Biases and random errors of estimates were then examined as a function of the sampling scale.
Published online 8 March 2006; doi:10.2136/vzj2005.0069
Vadose Zone J 2006 5: 153-167. [Abstract] [Full Text] [Figures Only] [PDF]  

M. J. Pringle and R. M. Lark

Spatial Analysis of Model Error, Illustrated by Soil Carbon Dioxide Emissions
Spatial analysis of model error is required when observations and model predictions are made at locations in space. We developed a model of soil carbon dioxide emissions, and used geostatistics to evaluate the model's performance. Spatial analysis of model error revealed information that was not apparent with a conventional (non-spatial) analysis.
Published online 8 March 2006; doi:10.2136/vzj2005.0015
Vadose Zone J 2006 5: 168-183. [Abstract] [Full Text] [Figures Only] [PDF]  

Jan Vanderborght, Roy Kasteel, and Harry Vereecken

Stochastic Continuum Transport Equations for Field-Scale Solute Transport: Overview of Theoretical and Experimental Results
To predict field-scale averaged solute fluxes, one-dimensional transport models are generally used. Three-dimensional stochastic continuum equations offer a way to derive equivalent one-dimensional transport model parameters from geostatistical information of soil heterogeneity. We review solutions of these stochastic equations and compare them with numerical and experimental data.
Published online 8 March 2006; doi:10.2136/vzj2005.0024
Vadose Zone J 2006 5: 184-203. [Abstract] [Full Text] [Figures Only] [PDF]  

Keith Loague and Leigh A. Soutter

Desperately Seeking a Cause for Hotspots in Regional-Scale Groundwater Plumes Resulting from Non-Point Source Pesticide Applications
Numerical simulations of flow and transport with synthetic inputs are used to investigate if regional-scale nonpoint source pesticide applications can lead to local high-concentrations in groundwater.Results indicate that the conditions necessary for the generation of local pesticide hotspots are far more restrictive than is commonly assumed.
Published online 8 March 2006; doi:10.2136/vzj2005.0014
Vadose Zone J 2006 5: 204-221. [Abstract] [Full Text] [Figures Only] [PDF]  

Keith Beven, Danrong Zhang, and André Mermoud

On the Value of Local Measurements for Prediction of Pesticide Transport at the Field Scale
A method for estimating the transport of pesticides to shallow groundwater is presented. The method accounts for uncertainty in estimating field scale parameter distributions by conditioning the field-scale parameter distributions and constraining the predictions with results of breakthrough experiments on large soil cores.
Published online 8 March 2006; doi:10.2136/vzj2005.0016
Vadose Zone J 2006 5: 222-233. [Abstract] [Full Text] [Figures Only] [PDF]  

A. K. Guber, Ya. A. Pachepsky, M. Th. van Genuchten, W. J. Rawls, J. Simunek, D. Jacques, T. J. Nicholson, and R. E. Cady

Field-Scale Water Flow Simulations Using Ensembles of Pedotransfer Functions for Soil Water Retention
Published online 8 March 2006; doi:10.2136/vzj2005.0111
Vadose Zone J 2006 5: 234-247. [Abstract] [Full Text] [Figures Only] [PDF]  

Zhulu Lin and David E. Radcliffe

Automatic Calibration and Predictive Uncertainty Analysis of a Semidistributed Watershed Model
A two-stage routine is presented for automatic calibration of the Soil Water Assessment Tool (SWAT, a semidistributed watershed model) that finds the best values for the model parameters, preserves spatial variability in essential parameters, and leads to a measure of the model prediction uncertainty.
Published online 8 March 2006; doi:10.2136/vzj2005.0025
Vadose Zone J 2006 5: 248-260. [Abstract] [Full Text] [Figures Only] [PDF]  

R. Cory Greer, Joan Q. Wu, Prabhakar Singh, and Donald K. McCool

WEPP Simulation of Observed Winter Runoff and Erosion in the U.S. Pacific Northwest
High erosion rates in the Inland Pacific Northwest are generally observed during the winter season. Field experimentation and the USDA's WEPP model were used to study the cyclic freezing and thawing events that lead to the most damaging erosion in this region. Continuous, detailed monitoring of hydrologic processes in the vadose zone resulted in a better understanding of the mechanisms of runoff and water erosion and provided insights for improving winter hydrologic routines in WEPP.
Published online 8 March 2006; doi:10.2136/vzj2005.0055
Vadose Zone J 2006 5: 261-272. [Abstract] [Full Text] [Figures Only] [PDF]  

Dimitrios G. Karpouzas, Ettore Capri, and Euphemia Papadopoulou-Mourkidou

Basin-Scale Risk Assessment in Rice Paddies: An Example Based on the Axios River Basin in Greece
Risk assessments of pesticides used in rice paddies will be more realistic when performed at basin-scale level. Exposure of surface and groundwater systems adjacent to rice-cultivated basins was estimated using the RICEWQ and RIVWQ mathematical models. Validation of modeling results suggested good agreement with measured pesticide concentrations.
Published online 8 March 2006; doi:10.2136/vzj2005.0021
Vadose Zone J 2006 5: 273-282. [Abstract] [Full Text] [Figures Only] [PDF]  

Muhammad Mukhlisin, Ken'ichirou Kosugi, Yoshifumi Satofuka, and Takahisa Mizuyama

Effects of Soil Porosity on Slope Stability and Debris Flow Runout at a Weathered Granitic Hillslope
A numerical model was developed for analyzing the effects of effective soil porosity (ESP) on the occurrence of slope failure and the movement of debris flow. A greater ESP value contributes to delaying slope failure, but tends to increase the water content of the displaced matter, resulting in faster and longer travel distances of debris flow.
Published online 8 March 2006; doi:10.2136/vzj2005.0044
Vadose Zone J 2006 5: 283-295. [Abstract] [Full Text] [Figures Only] [PDF]  

Narendra N. Das and Binayak P. Mohanty

Root Zone Soil Moisture Assessment Using Remote Sensing and Vadose Zone Modeling
An integrated model was developed for root zone soil moisture estimation and distribution at the watershed/regional scale. The new model implemented a one-dimensional vadose zone flow model based on the concept of parallel noninteracting stream tubes with an ensemble Kalman filter assimilation scheme and remotely sensed soil moisture within a GIS.
Published online 8 March 2006; doi:10.2136/vzj2005.0033
Vadose Zone J 2006 5: 296-307. [Abstract] [Full Text] [Figures Only] [PDF]  

Jianting Zhu, Binayak P. Mohanty, and Narendra N. Das

On the Effective Averaging Schemes of Hydraulic Properties at the Landscape Scale
Soil hydraulic parameter skewness is important in determining "effective" soil hydraulic properties for heterogeneous landscapes. The effective homogeneous soil hydraulic properties are so determined that the homogeneous media discharge the same ensemble moisture flux across the soil surface as the heterogeneous ones.
Published online 8 March 2006; doi:10.2136/vzj2005.0035
Vadose Zone J 2006 5: 308-316. [Abstract] [Full Text] [Figures Only] [PDF]  

Henry Lin

Temporal Stability of Soil Moisture Spatial Pattern and Subsurface Preferential Flow Pathways in the Shale Hills Catchment
This study sheds light on the pedologic and geomorphic controls on the spatial and temporal patterns of soil moisture over the landscape, and demonstrates the benefits of integrating pedologic and hydrologic expertise in the framework of hydropedology.
Published online 1 January 2006; doi:10.2136/vzj2005.0058
Vadose Zone J 2006 5: 317-340. [Abstract] [Full Text] [Figures Only] [PDF]  

Ole Wendroth, Sylvia Koszinski, and Eugenia Pena-Yewtukhiv

Spatial Association among Soil Hydraulic Properties, Soil Texture, and Geoelectrical Resistivity
Spatial variability of soil hydraulic properties in a glacial till soil is described using autoregressive state-space models, based on geoelectrical and soil textural measurements. The nested sampling and co-regionalization approach captured field-scale variability better than pedotransfer functions based on textural and bulk density data.
Published online 8 March 2006; doi:10.2136/vzj2005.0026
Vadose Zone J 2006 5: 341-355. [Abstract] [Full Text] [Figures Only] [PDF]  

K. A. Oquist, J. S. Strock, and D. J. Mulla

Influence of Alternative and Conventional Management Practices on Soil Physical and Hydraulic Properties
This study quantifies soil bulk density, saturated hydraulic conductivity, and moisture retention curves for a corn-soybean-alfalfa-small grain cropping system in relation to a conventionally managed corn-soybean rotation. These properties differ significantly between the two systems, affecting simulated rates of infiltration and drainage.
Published online 8 March 2006; doi:10.2136/vzj2005.0054
Vadose Zone J 2006 5: 356-364. [Abstract] [Full Text] [Figures Only] [PDF]  

S. A. Woods, R. G. Kachanoski, and M. F. Dyck

Long-Term Solute Transport under Semi-Arid Conditions: Pedon to Field Scale
A conservative tracer was used to quantify field-scale spatial variability in solute transport after 34 yr on a relatively level, Chernozemic soil under semiarid conditions. Small changes in topography resulted in significant surface redistribution of precipitation, which was correlated to long-term field-scale transport.
Published online 8 March 2006; doi:10.2136/vzj2005.0022
Vadose Zone J 2006 5: 365-376. [Abstract] [Full Text] [Figures Only] [PDF]  

P. J. Shouse, S. Goldberg, T. H. Skaggs, R. W. O. Soppe, and J. E. Ayars

Effects of Shallow Groundwater Management on the Spatial and Temporal Variability of Boron and Salinity in an Irrigated Field
Spatiotemporal distributions of soil chemical constituents, salts and phytotoxic elements, can reflect changes in management practices. We found that two inherent soil factors, soil texture and bulk density, played an overwhelming role compared with management.
Published online 8 March 2006; doi:10.2136/vzj2005.0032
Vadose Zone J 2006 5: 377-390. [Abstract] [Full Text] [Figures Only] [PDF]  

S. Grunwald, P. Goovaerts, C. M. Bliss, N. B. Comerford, and S. Lamsal

Incorporation of Auxiliary Information in the Geostatistical Simulation of Soil Nitrate Nitrogen
The authors investigated spatio-seasonal distributions of soil nitrate across the Santa Fe River Watershed in north-central Florida and identified areas with high soil nitrate throughout all seasons, prime targets to implement best management practices.
Published online 8 March 2006; doi:10.2136/vzj2005.0030
Vadose Zone J 2006 5: 391-404. [Abstract] [Full Text] [Figures Only] [PDF]  

K. Täumer, H. Stoffregen, and G. Wessolek

Seasonal Dynamics of Preferential Flow in a Water Repellent Soil
The temporal dynamic of water repellency in soils has a strong influence on water flow and the appearance of preferential flow paths at potentially water repellent sites. To quantify the degree of preferential flow we propose the effective cross section for water flow, which can be calculated using a linear relationship with initial soil moisture at 10 cm depth, duration and amount of precipitation, and potential evapotranspiration rate.
Published online 8 March 2006; doi:10.2136/vzj2005.0031
Vadose Zone J 2006 5: 405-411. [Abstract] [Full Text] [Figures Only] [PDF]  

BOOK REVIEWS:

Jan W. Hopmans

Principles of Soil and Plant Water Relations
Published online 8 March 2006; doi:10.2136/vzj2005.0100br
Vadose Zone J 2006 5: 506. [Full Text] [PDF]  

Ty P.A. Ferré

Practical Handbook of Soil, Vadose Zone, and Ground-Water Contamination: Assessment, Prevention, and Remediation
Published online 8 March 2006; doi:10.2136/vzj2005.0103br
Vadose Zone J 2006 5: 507. [Full Text] [PDF]  

Harter Thomas

Nondetects and Data Analysis: Statistics for Censored Environmental Data
Published online 8 March 2006; doi:10.2136/vzj2005.0106br
Vadose Zone J 2006 5: 508-509. [Full Text] [PDF]  

Sabine Goldberg

Geochemistry, Groundwater and Pollution
Published online 8 March 2006; doi:10.2136/vzj2005.1110br
Vadose Zone J 2006 5: 510. [Full Text] [PDF]  

THANKS TO OUR REVIEWERS:

Thanks to Our Reviewers
Published online 8 March 2006; doi:10.2136/vzj2005thank
Vadose Zone J 2006 5: 511-512. [Full Text] [PDF]  

ERRATA:

Steven R. Evett, Judy A. Tolk, and Terry A. Howell

Time Domain Reflectometry Laboratory Calibration in Travel Time, Bulk Electrical Conductivity, and Effective Frequency
Published online 8 March 2006; doi:10.2136/vzj2004.0046er
Vadose Zone J 2006 5: 513. [Full Text] [PDF]  

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