Source: UNIVERSITY OF CALIFORNIA, RIVERSIDE submitted to NRP
SOIL, WATER, AND ENVIRONMENTAL PHYSICS TO SUSTAIN AGRICULTURE AND NATURAL RESOURCES
Sponsoring Institution
National Institute of Food and Agriculture
Project Status
COMPLETE
Funding Source
HATCH
Reporting Frequency
Annual
Accession No.
1021006
Grant No.
(N/A)
Cumulative Award Amt.
(N/A)
Proposal No.
(N/A)
Multistate No.
W-4188
Project Start Date
Nov 25, 2019
Project End Date
Sep 30, 2024
Grant Year
(N/A)
Program Code
[(N/A)]- (N/A)
Recipient Organization
UNIVERSITY OF CALIFORNIA, RIVERSIDE
(N/A)
RIVERSIDE,CA 92521
Performing Department
Environmental Sciences
Non Technical Summary
Soil is one of the most crucial components in supporting life, food security, and ecosystem services on Earth. As a key part of the critical zone that determines agricultural and environmental sustainability, soils transform and supply water, energy, nutrients, and organic materials and moderate supply of water and nutrients for plants. Soil is where biological and chemical transformations occur, and it is the domain that sustains all flora and fauna ecosystem cycles. Meanwhile, changing societal food and energy demands, land use and climatic conditions are imposing ever-greater stresses on the soil. Recognizing the importance of soils for food security, agriculture, and in mitigation of climate change and sustainable development, the United Nations declared the International Year of soils, 2015 (IYS 2015) to raise awareness worldwide. The protection and stewardship of this crucial resource can be only assured through a better understanding of soil processes at different space and time scales.Soil physics plays a critical role in understanding soil resources and functions, and it has made outstanding progress in recent years and not considering soil anymore as a homogeneous porous medium composed of various primary and secondary particle sizes but better understanding the roles of soil structure and flux heterogeneity across scales for compensating extreme events and anthropogenic impacts. Storage, redistribution, transport and transformation processes of water, heat, and chemicals are understood for relatively small-scale systems in the vadose zone.Despite considerable scientific advances in soil physics research in general and the efforts made by this multistate team in particular, knowledge gaps still remain in measurement and modeling, transfer across spatio-temporal scales, and multidisciplinary integration of results. Without addressing these knowledge gaps, we would not be able to meet contemporary and emerging societal challenges and needs, and to respond and engage across the earth and environmental sciences in central issues such as climatic change, ecosystem services, food security, and energy production. To advance soil physics as a central solution for dealing with this multitude of socio-environmental challenges, we will develop and improve measurement tools and process-based models for quantifying soil ecosystem processes. Statistical analyses and modeling will help us to disentangle processes and their relationships at different scales to improve our ability to transfer information between scales. Finally, we will use our skills as soil physicists and environmental physicists and the knowledge we have gained through decades of studying this critical zone to advise and participate in national and international interdisciplinary projects to impart the importance and management of soil resources. Members of this group tend to form and re-form around new multi-investigator programs to address emerging critical questions for sustainable solutions to grand challenges. This flexible and synergistic approach has been extremely productive, and it encourages rich pollination of ideas and solutions to complex problems. This proposal seeks to maintain the ties between this extremely productive and creative group that, without the W4188 committee, would not be as focused on national needs research. The proposal also highlights our efforts to improve environmental monitoring, implement basic soil physics research, reach out to a broader scientific community (e.g., plant science, ecology, chemistry, and microbiology), and educate and communicate to stakeholders and colleagues within and outside our traditional disciplines.
Animal Health Component
20%
Research Effort Categories
Basic
30%
Applied
20%
Developmental
50%
Classification

Knowledge Area (KA)Subject of Investigation (SOI)Field of Science (FOS)Percent
1020110201030%
1030210205035%
1110320208035%
Knowledge Area
103 - Management of Saline and Sodic Soils and Salinity; 102 - Soil, Plant, Water, Nutrient Relationships; 111 - Conservation and Efficient Use of Water;

Subject Of Investigation
0320 - Watersheds; 0110 - Soil; 0210 - Water resources;

Field Of Science
2010 - Physics; 2050 - Hydrology; 2080 - Mathematics and computer sciences;
Goals / Objectives
1. Connect new understandings of storage and transport of mass and energy to assess environmental change. See attachment. 2. Develop and test new instrumentation, methods and models to improve the mechanistic understanding of soil processes and the quality of soil information and knowledge. See attachment. 3. Integrate scale-appropriate methods to improve decisions related to the management of soil and water resources.
Project Methods
Objective 1:Connect new understandings of storage and transport of mass and energy to assess environmental change:Characterization and description of physical properties of the vadose zoneWe will continue developing comprehensive coupled water and heat transport numerical models, including multi-domain unsaturated zone water flow and heat transport processes at the continuum scale. This will further improve our capacity to better understand the water and energy cycle. Using these numerical models we will quantify leaching of nitrates and salts, and their effects on root water uptake due to abiotic stresses. New inverse estimation schemes with uncertainty will be developed. We will estimate effective soil hydraulic and thermal properties at different resolutions by assimilating soil moisture from ground, air, and space-borne sensors.Multi-scale flow and transport including impacts from climate changeWe will collaborate with local investigators, measuring core-scale soil hydraulic properties, and apply scaling techniques to the hillslope scale. Measurements of soil water tension and soil moisture, in concert with piezometer data, will be coupled with HYDRUS to simulate hillslope-scale soil hydrology.Applications of soil physics and biophysics in ecology and agricultureWe will continueworking on understanding root zone soil hydrology and spatiotemporal variabilities in soil hydraulic properties using a variety of computer modeling approaches.We will collaborate with NV, OR, DE, and MN to better understand the relationships between soil water characteristics and interfacial energies of the soil solids as well as the process of infiltration under conditions of varying degrees of water repellency and moisture content.Transport and transformations of solutes, nanoparticles, and emerging contaminantsWe will investigate interactions of colloids with interfaces, and fate and transport of potential agricultural and emerging contaminants by conducting a combination of laboratory column experiments, numerical modeling, greenhouse studies, and field-scale research. Identified and quantified mechanisms controlling colloid fate and transport in the vadose zone will beincorporated into mathematical models (HYDRUS).We will focus on characterizing the fate and transport of trace organic compounds (endocrine disrupting compounds) originating from reclaimed wastewaters in soil and water through field, laboratory, and numerical experiments (column scale to field scale). Findings will be upscaled to plume scale and further implemented in coupled models such as HP1.Objective 2:Develop and test new methods and models to improve the quality of soil information and knowledgeQuantifying near-surface processes with instruments and analyses:We and many of the other participants in this multistate program (USSL, UCD, WSU, UDel, NDSU and DRI) will continue developing numerical tools to study and evaluate environmental processes and biogeochemical reactions across scales. This research will use HYDRUS to describe processes at multiple scales, including colloid and colloid-facilitated transport;preferential flow and transport of various chemicals (viruses, colloids, and bacteria); coupled biogeochemical reactions; coupled movement of water, vapor and energy; and micro-irrigation management practices on soil leaching.Objective 3:Integrate scale-appropriate methods to improve decisions of soil and water resources:We will develop guidance for improved irrigation management practices that minimize nitrate losses while maintaining crop production. Field measurements will be coupled with numerical modeling tools (HYDRUS) for the main purpose to evaluate best management practices.

Progress 11/25/19 to 09/30/20

Outputs
Target Audience:Numerical models that we have developed are used by thousands of scientists, students, and professionals in the United States, as well as around the world. This is best documented by a very large number of citations that our research papers receive in the scientific literature. According to ISI Web of Knowledge, peer-reviewed journal articles of the PI of this project were cited in 2020 by about two thousand times, and his h-index reached a value of 67. We continue supporting a large number of HYDRUS users from around the world using both web, emails, direct discussions at the national and international conferences and workshops. Changes/Problems: Nothing Reported What opportunities for training and professional development has the project provided?Two UCR Ph.D. student has been directly involved in this project. Several visiting Ph.D. students from universities worldwide have been involved in either using our numerical models and providing information for their further development. Similarly, numerous visiting scientists have been working with us on model applications and/or further development. Additionally, in 2020, we offered two (two- and three-day) short courses on using HYDRUS models. One for the Asian (mostly China, Korea, and Japan) and one for the European (for participants mostly from EU countries). About 55 students participated in these short courses. How have the results been disseminated to communities of interest?Research findings were disseminated via refereed journal publications, conference proceedings, and presentations at national and international meetings (see publication section below). HYDRUS models have been updated with several new capabilities and options that have been developed for various research projects. What do you plan to do during the next reporting period to accomplish the goals?We will continue to expand the capabilities of the HYDRUS modeling environment by developing specialized modules for more complex applications that cannot be solved using its standard versions. In particular: We are planning to further develop the coupling between the HYDRUS and MODFLOW models to be better capable of simulating processes at a large scale. This should include not only water, but also various contaminants and particles (e.g., bacteria, colloids). We plan to release a "Dynamic Plant Uptake" module for the HYDRUS model for modeling the translocation and transformation of chemicals in the soil-plant continuum. Additionally, we also want to improve our capability in simulating attachment/detachment processes for bacteria, colloids, and/or nanoparticles under hydrologically and chemically transient conditions. We are also planning to develop much more efficient calibration tools based on the particle swarm algorithm coupled with a local search. Finally, we are planning to develop a new modeling tool for evaluating water transit times in the vadose zone based on the fate and transport of stable water isotopes (considering isotope fractionation) and particle tracking. Our ultimate goal for 2021 is to fully rewrite the HYDRUS-1D GUI (to bring it on the same level as HYDRUS (2D/3D) so that we can make available various numerical tools, options, and models that we have developed over the last decade and that are not yet available to the general public.

Impacts
What was accomplished under these goals? We continue to expand the capabilities of the HYDRUS modeling environment by developing specialized modules for more complex applications that cannot be solved using its standard versions. The standard versions of HYDRUS, as well as its specialized modules, have been used by myself, my students, and my collaborators in multiple applications described below. Hydrological Applications Kacimov et al. (2020) developed analytical solutions for and then studied phreatic seepage flow through an earth dam with an impeding strip. Ali et al. (2020) developed a pH-based pedotransfer function for scaling saturated hydraulic conductivity reduction and implemented this PTF into UnsatChem. Sasidharan et al. (2020) carried out numerical simulations using HYDRUS (2D/3D) to evaluate groundwater recharge from drywells in heterogeneous soil systems under constant head conditions. Brunetti et al. (2020) demonstrated how to handle model complexity with parsimony. They carried out a numerical analysis of the nitrogen turnover in a controlled aquifer model setup. Zhou et al. (2020) evaluated the effects of large macropores on soil evaporation in salt marshes using laboratory experiments and numerical modeling with HYDRUS (2D/3D). Beegum et al. (2020) used MODFLOW with the HYDRUS-1D package and MT3DMS to investigating the atrazine contamination in the Zwischenscholle (Germany) aquifer. Zheng et al. (2020) monitored in-situ freezing-thawing cycles in a deep vadose zone and then carried out an analysis of involved processes. Turunen et al. (2020) evaluated the worth of drain discharge and surface runoff data in hydrological simulations using modified HYDRUS-1D. Glass et al. (2020) used the scaling factors in HYDRUS to simulate a reduction in hydraulic conductivity (in time) during infiltration from recharge wells and infiltration basins. Liu et al. (2020) implemented into CHAIN_2D (a predecessor of HYDRUS) a Gaussian process-based Iterative Ensemble Kalman Filter for parameter estimation of unsaturated flow. Tu et al. (2020a) derived and evaluated an analytical solution of groundwater flow in a confined aquifer with a single-well circulation system. Tu et al. (2020b) derived and evaluated an approximate analytical solution for non-Darcian flow in a confined aquifer with a single-well circulation groundwater heat pump system. Kacimov et al. (2020) derived and evaluated (numerically) an approximate analytical solution for seepage to ditches and topographic depressions in saturated and unsaturated soils. Filipovic et al. (2020) carried out laboratory experiments to assess vineyard soil structure and preferential flow using dye tracer, X-ray tomography, and numerical simulations. Rahmati et al. (2020) develop an algorithm to estimate soil hydraulic properties from one-dimensional infiltration experiments using the characteristic time concept. Zheng et al. (2020) monitored and modeled the coupled movement of water, vapor, and energy in deep soil profiles of arid areas. Silva et al. (2020) modified the HYDRUS models (1D and 2D) for simulating PFAS transport in the vadose zone. Thomas et al. (2020) carried out an experimental study for unraveling compensatory root water uptake and hydraulic redistribution under heterogeneous soil moisture conditions. Kacimov et al. (in press) revisited the concept of Girinskii's potential to evaluate water table rise in urban shallow aquifer with vertically-heterogeneous soils. Sasidharan et al. (in press) carried out numerical simulations using HYDRUS (2D/3D) to evaluate and compate recharge from drywells and infiltration basins. Liu et al. (in press) compared different ensemble data assimilation methods for the estimation of time-varying soil hydraulic parameters. Objective 3: To apply our knowledge of scale-appropriate methodologies to enhance the management of vadose zone resources that benefit agricultural systems, natural resources and environmental sustainability. The Use of Hydrus Models to Evaluate Various Irrigation and Fertigation Problems - Agricultural Applications Phogat et al. (2020a) simulated water and salinity risks to viticulture under prolonged sustained deficit and saline water irrigation using HYDRUS-1D. Phogat et al. (2020b) carried out a comprehensive assessment of the management of soil chemical changes associated with irrigation of protected crops using the UnsatChem model. Chen et al. (2020a) evaluated the effects of biodegradable film and plastic film mulching on nitrogen uptake and leaching in a drip-irrigated field using HYDRUS (2D/3D). Bristow et al. (2020) carried out numerical simulations using HYDRUS (2D/3D) evaluating the effects furrow surface conditions and fertilizer locations have on plant nitrogen and water use in furrow irrigated systems. Chen et al. (2020b) evaluated soil nitrate dynamics in an intercropping dripped ecosystem using HYDRUS-2D. Phogat et al. (2020c) evaluated the impact of long-term irrigation with recycled water on crop yield and soil chemical properties using the UnsatChem model. Phogat et al. (2020d) assessed the role of rainfall redirection techniques for arresting land degradation under drip irrigated grapevines using HYDRUS (2D/3D). Filipovi? et al. (2020a) reviewed challenges and opportunities related to using sprayable biodegradable polymer membrane technology for cropping systems. Peddinti et al. (2020) developed and implemented into HYDRUS-2D a macroscopic soil-water transport model to simulate root water uptake in the presence of water and disease stress. Al-Mayahi et al. (2020) experimentally tested and simulated using HYDRUS-2D a smart capillary barrier-wick irrigation system for home gardens in arid zones. Kanzari et al. (2020) simulated using HYDRUS-1D water and salts dynamics in the soil profile with a tomato crop in the semi-arid region of Tunisia and evaluated different irrigation strategies. Haghnazari et al. (2020) carried out using HYDRUS (2D/3D) dynamic assessment of the impacts of global warming on nitrate losses from a subsurface-drained rainfed-canola field. Filipovic et al. (2020b) simulated using HYDRUS-1D water flow and phosphorus sorption in a soil amended with sewage sludge and olive pomace as compost or biochar. Assouline et al. (2020) carried out field experiments to assess various mitigating measures (mixing with freshwater and/or adjusting irrigation management and design) to reduce the negative impacts of irrigation with effluent water. Braunack et al. (2020) used field experiments to evaluate a Sprayable Biodegradable Polymer Membrane (SBPM) Technology for soil water conservation in tomato and watermelon production systems. Zhang et al. (2020) evaluated soil salt dynamics in a dripped field irrigated with brackish water and leached with freshwater irrigation during different growth stages. Fate and Transport of Various Substances (Carbon Nanotubes, Viruses, Explosives) With another member of the W4188 group, Scott Bradford we worked on various aspects of the transport of pathogens in the subsurface. Liang et al. (2020) investigated the evidence for the critical role of nanoscale surface roughness on the retention and release of silver nanoparticles in porous media. Zhang et al. (2021) investigated the non-monotonic contribution of nonionic surfactant on the retention of functionalized multi-walled carbon nanotubes in porous media.

Publications

  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Phogat, V., J. W. Cox, J. Simunek, and P. Hayman, Modeling water and salinity risks to viticulture under prolonged sustained deficit and saline water irrigation, Journal of Water and Climate Change, 11(3), 901915, doi: 10.2166/wcc.2018.186, (published online May 21, 2018), 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Kacimov, A. R., N. D. Yakimov, and J. Simunek, Phreatic seepage flow through an earth dam with an impeding strip, Computational Geosciences, 24, 17-35, doi: 10.1007/s10596-019-09879-8, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Phogat, V., D. Mallants, J. W. Cox, J. Simunek, D. P. Oliver, and J. Awad, Management of soil chemical changes associated with irrigation of protected crops, Agricultural Water Management, 227, 105845, doi: 10.1016/j.agwat.2019.105845, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Liang, Y., J. Zhou, Y. Dong, E. Klumpp, J. Simunek, and S. A. Bradford, Evidence for the critical role of nanoscale surface roughness on the retention and release of silver nanoparticles in porous media, Environmental Pollution, 258, 113803, 9 p., doi: 10.1016/j.envpol.2019.113803, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Chen, N., X. Li, J. Simunek, H. Shi, J. Shi, Z. Ding, and Y. Zhang, The effects of biodegradable and plastic film mulching on nitrogen uptake, leaching in a drip-irrigated sandy field, Agriculture, Ecosystems and Environment, 292, 106817, 13 p., doi: 10.1016/j.agee.2020.106817, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Sasidharan, S., S. A. Bradford, J. Simunek, and S. R. Kraemer, Groundwater recharge from drywells under constant head conditions, Journal of Hydrology, 583, 124569, 14 p., doi: 10.1016/j.jhydrol.2020.124569, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Ali, A., A. J. W. Biggs, J. Simunek, and J. McL. Bennett, A pH based pedotransfer function for scaling saturated hydraulic conductivity reduction: Improved estimation of hydraulic dynamics in HYDRUS, Vadose Zone Journal, 18(1), 190072, doi: 10.2136/vzj2019.07.0072, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Bristow, K. L., J. Simunek, S. A. Helalia, and A. A. Siyal, Numerical simulations of the effects furrow surface conditions and fertilizer locations have on plant nitrogen and water use in furrow irrigated systems, Agricultural Water Management, 232, 106044, 11 p., doi: 10.1016/j.agwat.2020.106044, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Chen, N., X. Li, J. Simunek, H. Shi, Q. Hu, and Y. Zhang, Evaluating soil nitrate dynamics in an intercropping dripped ecosystem using HYDRUS-2D, Science of Total Environment, 718, 137314, 13 p., doi: 10.1016/j.jhydrol.2020.124681, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Brunetti, G., J. Simunek, D. Gl�ckler, and C. Stumpp, Handling model complexity with parsimony: Numerical analysis of the nitrogen turnover in a controlled aquiter model setup, Journal of Hydrology, 584, 124681, 18 p., doi: 10.1016/j.jhydrol.2020.124681, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Zhou, T., P. Xin, L. Li, D. A. Barry, J. Simunek, Effects of large macropores on soil evaporation in salt marshes, Journal of Hydrology, 585, 124754, 10 p., doi: 10.1016/j.jhydrol.2020.124754, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Beegum, S., J. Vanderborght, J. Simunek, M. Herbst, K. P. Sudheer, and I. M. Nambi, Investigating the atrazine contamination in the Zwischenscholle aquifer using MODFLOW with the HYDRUS-1D package and MT3DMS, Water, 12(4), 1019, 24 p., doi: 10.3390/w12041019, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Phogat, V., D. Mallants, J. W. Cox, J. Simunek, D. P. Oliver, T. Pitt, and P. Petrie, Impact of long-term recycled water irrigation on crop yield and soil chemical properties, Agricultural Water Management, 237, 106167, 14 p., doi: 10.1016/j.agwat.2020.106167, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Zheng, C., Y. Lu, X. Liu, J. Simunek, Y. Zeng, C. Shi, and H. Li, In-situ monitoring and characteristic analysis of freezing-thawing cycles in a deep vadose zone, Water, 12(5), 1261, 18 p., doi: 10.3390/w12051261, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Phogat, V., T. Pitt, R. M. Stevens, J. W. Cox, J. Simunek, and P. R. Petrie, Assessing the role of rainfall redirection techniques for arresting land degradation under drip irrigated grapevines, Journal of Hydrology, 587, 125000, 12 p., doi: 10.1016/j.jhydrol.2020.125000, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Filipovic, V., K. L. Bristow, L. Filipovic, Y. Wang, H. Y. Sintim, M. Flury, and J. Simunek, Sprayable biodegradable polymer membrane technology for cropping systems: Challenges and opportunities, Viewpoint paper, Environmental Science & Technology, 54(8), 4709-4711, 3 p., doi: 10.1021/acs.est.0c00909, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Turunen, M., G. Gurarslan, J. Simunek, M. Myllys, and H. Koivusalo, What is the worth of drain discharge and surface runoff data in hydrological simulations? Journal of Hydrology, 587, 125030, 9 p., doi: 10.1016/j.jhydrol.2020.125030, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Peddinti, S. R., B. V. N. P. Kambhammettu, R. Lad, J. Simunek, R. M. Gade, and J. Adinarayana, A macroscopic soil-water transport model to simulate root water uptake in the presence of water and disease stress, Journal of Hydrology, 587, 124940, 13 p., doi: 10.1016/j.jhydrol.2020.124940, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Al-Mayahi, A., S. Al-Ismaily, A. Al-Maktoumi, H. Al-Busaidi, A. Kacimov, R. Janke, J. Bouma, and J. Simunek, A smart capillary barrier-wick irrigation system for home gardens in arid zones, Irrigation Science, 38, 235-250, doi: 10.1007/s00271-020-00666-3, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Liu, K., G. Huang, Z. Jiang, X. Xu, Y. Xiong, Q. Huang, and J. Simunek, A gaussian process-based Iterative Ensemble Kalman Filter for parameter estimation of unsaturated flow, Journal of Hydrology, 589, 125210, 15 p., doi: 10.1016/j.jhydrol.2020.125210 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Tu, K., Q. Wu, J. Simunek, C. Chen, K. Zhu, Y. Zeng, S. Xu, and Y. Wang, An analytical solution of groundwater flow in a confined aquifer with a single-well circulation system, Water Resources Research, 56(7), e2020WR027529, 14 p., doi: 10.1029/2020WR027529, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Haghnazari, F., F. Karandish, A. Darzi-Naftchali, and J. Simunek, Dynamic assessment of the impacts of global warming on nitrate losses from a subsurface-drained rainfed-canola field, Agricultural Water Management, 242, 10640, 15 p., doi: 10.1016/j.agwat.2020.106420, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Filipovic, V., M. Cerne, J. Simunek, L. Filipovic, M. Romic, G. Ondraaek, I. Bogunovic, I. Mustac, V. Krevh, A. Feren?evic, D. A. Robinson, I. Palcic, I. Paskovic, S. Goreta Ban, Z. Uzila, and D. Ban, Modeling water flow and phosphorus sorption in a soil amended with sewage sludge and olive pomace as compost or biochar, Agronomy, 10, 1163, 20 p., doi:,10.3390/agronomy10081163, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Tu, K., Q. Wu, J. Simunek, K. Zhu, C. Chen, W. Zheng, Y. Zeng, and S. Xu, An approximate analytical solution for non-Darcian flow in a confined aquifer with a single well circulation groundwater heat pump system, Advances in Water Resources, 145, 103740, 10 p., doi: 10.1016/j.advwatres.2020.103740, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Assouline, S., T. Kamai, J. Simunek, K. Narkis, and A. Silber, Mitigating the impact of irrigation with effluent water: Mixing with freshwater and/or adjusting irrigation management and design, Water Resources Research, 56(9), e2020WR027781, 14 p., doi: 10.1029/2020WR027781, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Kacimov, A. R., Y. V. Obnosov, and J. Simunek, Seepage to ditches and topographic depressions in saturated and unsaturated soils, Advances in Water Resources, 145, 103732, 15 p., doi: 10.1016/j.advwatres.2020.103732, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Filipovic, V., J. Defterdarovic, J. Simunek, L. Filipovic, G. Ondraaek, D. Romic, I. Bogunovic, I. Mustac, J. Curic, and R. Kodesova, Estimation of vineyard soil structure and preferential flow using dye tracer, X-ray tomography, and numerical simulations, Geoderma, 380, 114699, 12 p., doi: 10.1016/j.geoderma.2020.114699, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Rahmati, M., J. Vanderborght, J. Simunek, J. A. Vrugt, D. Moret-Fern�ndez, B. Latorre, L. Lassabatere, and Harry Vereecken, Soil hydraulic properties estimation from one-dimensional infiltration experiments using characteristic time concept, Vadose Zone Journal, doi: 10.1002/vzj2.20068, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Zheng, C., J. Simunek, Y. Lu, X. Liu, C. Shi, and H. Li, Monitoring and modeling the coupled movement of water, vapor, and energy in arid areas, Journal of Hydrology, 590, 125528, 16 p., doi: 10.1016/j.jhydrol.2020.125528, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Silva, J. A. K., J. Simunek, and J. E. McCray, A modified HYDRUS model for simulating PFAS transport in the vadose zone, Water, 12(10), 2758, 24 p., doi: 10.3390/w12102758, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Thomas, A., B. K. Yadav, J. Simunek, Root water uptake under heterogeneous soil moisture conditions: an experimental study for unraveling compensatory root water uptake and hydraulic redistribution, Plant and Soil, 457(1-2), 421-435, doi: 10.1007/s11104-020-04738-3, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Kanzari S., I. Daghari, J. Simunek, A. Younes, R. Ilahy, S. B. Mariem, M. Rezig, B. B. Nouna, H. Bahrouni, and M. A. B. Abdallah, Simulation of water and salts dynamics in the soil profile with a tomato crop in the semi-arid region of Tunisia  Evaluation of the irrigation strategy, Water, 12, 1594, 16 p., doi: 10.3390/w12061594, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Glass, J., J. Simunek, and C. Stefan, Scaling factors in HYDRUS to simulate a reduction in hydraulic conductivity during infiltration from recharge wells and infiltration basins, Vadose Zone Journal, 19, e20027, 19 p., doi: 10.1002/vzj2.20027, 2020.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Braunack, M. V., V. Filipovic, R. Adhikari, G. Freischmidt, P. Johnston, P. S. Casey, Y. Wang, J. Simunek, L. Filipovic, and K. L. Bristow, Evaluation of a Sprayable Biodegradable Polymer Membrane (SBPM) Technology for soil water conservation in tomato and watermelon production systems, Agricultural Water Management, 243, 106446, 12 p., doi: 10.1016/j.agwat.2020.106446, 2021.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Zhang, Y., X. Li, J. Simunek, H. Shi, N. Chen, T. Tian, and Q. Hu, Evaluating soil salt dynamics in brackish water dripped field by leaching with freshwater irrigation during different growth stages, Agricultural Water Management, 244, 106601, 13 p., doi: 10.1016/j.agwat.2020.106601, 2021.