Lab Group of T. A. Ghezzehei

We study SOIL: the Structure, Organization, and Interactions of Living-soils

Recent Publications

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Nitrogen and phosphorus mineralization dynamics in human excreta-derived fertilizers

Bischak, E. et al.
Frontiers in Agronomy

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Learning Constitutive Relations From Soil Moisture Data via Physically Constrained Neural Networks

Bandai, T. et al.
Water Resources Research

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Carbon stock quantification in a floodplain restoration chronosequence along a ...

Clifton, B. et al.
Science of Total Environment

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No-tillage, surface residue retention, and cover crops improved San Joaquin Valley soil health ...

Mitchell, J. et al.
California Agriculture

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Estimating soil hydraulic properties from oven-dry to full saturation using shortwave infrared ...

Bandai, T. et al.
Journal of Hydrology

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A novel approach for determining soil carbohydrates using UV spectrophotometry

Albalasmeh, A.A. et al.
J. Saudi Soc. Agric. Sci.

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Soil physics matters for the land–water–food–climate nexus and sustainability

Wang, G. et al.
Eur. J. Soil Sci.

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Methane and nitrous oxide emissions during biochar-composting are driven by biochar application rate ...

Harrison, B. et al.
GCB-Bioenergy

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The effects of different biochar-dairy manure co-composts on soil moisture and nutrients retention...

Thao, T. et al.
Agro. Geo. & Environ.

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Biochar co-compost improves nitrogen retention and reduces carbon emissions in a winter wheat...

Gao, S. et al.
GCB-Bioenergy

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How does soil structure affect water infiltration? A meta-data systematic review

Basset, C. et al.
Soil & Tillage Res.

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Forward & inverse modeling of water flow in unsaturated soils with discontinuous hydraulic conduc....

Bandai, T & Ghezzehei, T.A.
Hydrol. Earth Syst. Sci.

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Artificial soils reveal individual factor controls on microbial processes.
 

Del Valle, I. et al.
mSystems

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Dairy Manure Co-composting with Wood Biochar Plays a Critical Role in Meeting Global Methane Goals

Harrison, B.P. et al.
Env. Sci. & Tech.

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Long-Term Impact of Cover Crop & Reduced Disturbance Tillage on Soil Pore Size & Soil Water Storage

Araya, S.A. et al.
SOIL

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Confronting the water potential information gap.
 

Novik, K.A. et al.
Nature Geoscience

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Synergy between compost & cover crops in a Mediterranean row crop system leads to increased subsoil...

Rath, D. et al.
SOIL

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No-tillage sorghum and garbanzo yields match or exceed standard tillage yields

Mitchell, J.P. et al.
California Agriculture

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Intercropping with Guiera senegalensis in a semi-arid area to mitigate early-season abiotic stress...

Bayala, R. et al.
J. Agronomy & Crop Sci.

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An overlooked local resource--Shrub-intercropping for food production, drought resistance and ecosystem...

Bright, MBH, et al.
Agricul., Ecosys. & Env.

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Advances in soil moisture retrieval from multispectral remote sensing using unoccupied aircraft systems...

Araya, S.A., et al.
Hydrol. Earth Syst. Sci.,

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Physics-informed neural networks with monotocnicity constraints for Richardson-Richards equation...

Bandai, T. & T.A. Ghezzehei
Water Resour. Res.

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Root uptake under mismatched distributions of water and nutrients in the root zone.

Yan, J. et al.
Biogeosciences

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Modeling Near-surface Water Redistribution in a Desert Soil.
 

Luo, Y. et al.
Vadose Zone Journal

Updates & News

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June 06, 2024

Let’s BRAAG about Jalynn

NASA ACRES blog--Let’s BRAAG about Jalynn Greer, a Kentucky State University Scholar who is Bridging a Career Path in Nursing and Agriculture success!

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May 08, 2024

Kennedy's BRAAG experience

NASA ACRES blog--Learning by Doing, Basia Skudrzyk interviewed a Howard Scholar, Kennedy Williams' about he journey with the BRAAG program

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May 12, 2023

Touyee Thao earned PhD

Celebrating Dr. Touyee Thao's remarkable PhD completion and his upcoming role as a USDA Research Scientist. Proud of his achievements and wishing him continued success!

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December 16, 2022

Hooding of Toshi & Manisha

Dr. Toshiyuki Bandai and Dr. Manisha Dolui successfully graduate with PhDs and move on to postdoctoral positions. Congratulations to both on their remarkable achievements!

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Research Areas

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Sustainable Agriculture

Reduced tillage systems, cover cropping strategies, and organic amendments to enhance soil structure, water retention, and agricultural sustainability.

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Soil Structure & Carbon Dynamics

Fundamental research on soil aggregation processes, structure formation, and carbon cycling mechanisms that control soil physical and chemical properties.

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Physics-Constrained AI

Development of novel machine learning models that incorporate physical principles and constraints to predict soil behavior and environmental processes.

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Data-Driven Soil Science

Analysis of large-scale datasets to uncover patterns and test hypotheses about fundamental soil processes, leveraging big data approaches for scientific discovery.

Courses

ES 200 Environmental Systems

A comprehensive overview of environmental systems, exploring the complex interactions between physical, biological, and social components. This course examines fundamental principles of systems thinking applied to environmental challenges, with emphasis on interdisciplinary approaches to sustainability science. Graduate.

Recent Offering: Fall 2025

Syllabus

ESS 110 Hydrology & Climate

Basics of the hydrological cycle and the global climate system. Fundamentals of surface water hydrology, hydrometeorology, evaporation, precipitation, statistical and probabilistic methods, unit hydrograph and flood routing. Undergraduate.

Recent Offering: Fall 2024, 2025

Syllabus

ES 212 Subsurface Hydrology (Archive)

Hydrologic and geologic factors controlling the occurrence and use of groundwater on regional and local scales. Physical, mathematical, geologic and engineering concepts fundamental to subsurface hydrologic processes. Introduction to ground-water flow and transport modeling. Graduate.

Recent Offering: Spring 2025

Syllabus