2026 David E. Clay: Plant Science and Agronomy Researcher – H-Index, Publications & Awards

D-Index & Metrics

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Plant Science and Agronomy	40	3878	3629	965	866	250	6932
Environmental Sciences	40	8023	7710	2866	2669	251	6972

Discipline name

D-Index

World Ranking

Current World Ranking

National Ranking

Current National Ranking

Publications

Citations

Plant Science and Agronomy

3878

3629

965

866

250

6932

Environmental Sciences

8023

7710

2866

2669

251

6972

Plant Science and Agronomy

D-Index

Citations

6932

World Ranking

3878

National Ranking

965

Environmental Sciences

D-Index

Citations

6972

World Ranking

8023

National Ranking

2866

Research.com Recognitions

2007 - Fellow of the American Society of Agronomy (ASA)

Overview

David E. Clay is affiliated with South Dakota State University in the United States and has contributed extensively to research in agricultural and environmental sciences. Their primary fields of study include Agricultural and Biological Sciences as well as Environmental Science. Within these, they have focused on subfields such as Soil Science, Plant Science, Ecology, Civil and Structural Engineering, and Environmental Engineering.

Clay's research topics cover several areas related to soil and environmental dynamics, including:

Soil Carbon and Nitrogen Dynamics
Soil and Unsaturated Flow
Soil and Water Nutrient Dynamics
Soil Geostatistics and Mapping
Peatlands and Wetlands Ecology
Remote Sensing in Agriculture
Rangeland and Wildlife Management

Recent publications demonstrate active engagement in topics related to soil carbon, greenhouse gas emissions, and precision agriculture. Some notable papers include:

"A global meta-analysis of cover crop response on soil carbon storage within a corn production system" (2023) published in Agronomy Journal
"An Examination of Best Practices for Survey Research with Agricultural Producers" (2020) published in Society & Natural Resources
"Quantification and machine learning based N₂O-N and CO₂-C emissions predictions from a decomposing rye cover crop" (2022) published in Agronomy Journal
"The role of living labs in cultivating inclusive and responsible innovation in precision agriculture" (2024) published in Agricultural Systems
"Fertilizer timing affects nitrous oxide, carbon dioxide, and ammonia emissions from soil" (2020) published in Soil Science Society of America Journal

The scientist has published extensively in venues such as Agronomy Journal, CSA News, ASSA, CSSA and SSSA, Journal of Soil and Water Conservation, and Agrosystems Geosciences & Environment. Among these, Agronomy Journal represents the most frequent publication venue with 14 articles.

Frequent collaborators of David E. Clay include:

Sharon A. Clay with 26 joint publications
Deepak R. Joshi with 19 joint publications
Ronald F. Turco with 10 joint publications
Marilyn L. Warburton with 9 joint publications
Shaina Westhoff with 8 joint publications

In addition to journal articles, Clay is the author of a book titled Salinity and Sodicity, published in 2024 under the ASSA, CSSA and SSSA publisher.

David E. Clay's contributions have been recognized with the award of Fellow of the American Society of Agronomy (ASA) in 2007.

Best Publications

Relating apparent electrical conductivity to soil properties across the north-central USA

K. A. Sudduth;N. R. Kitchen;W. J. Wiebold;W. D. Batchelor

527
Citations
Phosphorus Sorption and Availability from Biochars and Soil/Biochar Mixtures

Rajesh Chintala;Thomas E. Schumacher;Louis M. McDonald;David E. Clay

303
Citations
Nitrate sorption and desorption in biochars from fast pyrolysis

Rajesh Chintala;Javier Mollinedo;Thomas E. Schumacher;Sharon K. Papiernik

269
Citations
Ammonia volatilization from urea as influenced by soil temperature, soil water content, and nitrification and hydrolysis inhibitors

D. E. Clay;G. L. Malzer;J. L. Anderson

210
Citations
Crop Residue Management Challenges: A Special Issue Overview

David E. Clay;Ronald Alverson;Jane M.F. Johnson;Douglas L. Karlen

204
Citations
Molecular characterization of biochars and their influence on microbiological properties of soil

Rajesh Chintala;Thomas E. Schumacher;Sandeep Kumar;Douglas D. Malo

199
Citations
Using soil electrical conductivity to improve nutrient management

Ronnie W. Heiniger;Robert G. McBride;David E. Clay

185
Citations
Characterizing land cover/land use from multiple years of Landsat and MODIS time series: A novel approach using land surface phenology modeling and random forest classifier

Lan H. Nguyen;Deepak R. Joshi;David E. Clay;Geoffrey M. Henebry

174
Citations
Characterizing Water and Nitrogen Stress in Corn Using Remote Sensing

D. E. Clay;Ki‐In Kim;J. Chang;S. A. Clay

166
Citations
Do Synergistic Relationships between Nitrogen and Water Influence the Ability of Corn to Use Nitrogen Derived from Fertilizer and Soil

Ki-In Kim;David E. Clay;C. G. Carlson;S. A. Clay

160
Citations
Sewage sludge organic matter and soil properties

C. E. Clapp;S. A. Stark;D. E. Clay;W. E. Larson

151
Citations
Physiological responses related to increased grain yield under drought in the first biotechnology‐derived drought‐tolerant maize

Krishna S. Nemali;Christopher Bonin;Frank G. Dohleman;Mike Stephens

123
Citations
Life-cycle assessment of the beef cattle production system for the northern great plains, USA.

Christopher D. Lupo;David E. Clay;Jennifer L. Benning;James J. Stone

115
Citations
Maize-N: A Decision Tool for Nitrogen Management in Maize

T. D. Setiyono;H. Yang;D. T. Walters;A. Dobermann

113
Citations
Corn (Zea mays L.) Yield Prediction Using Multispectral and Multidate Reflectance

Jiyul Chang;David E. Clay;Kevin Dalsted;Sharon Clay

107
Citations
Winter Cover Crops Impact on Corn Production in Semiarid Regions

Cheryl L. Reese;David E. Clay;Sharon A. Clay;Alex D. Bich

94
Citations
Geostatistical Characterization of the Spatial Distribution of Adult Corn Rootworm (Coleoptera: Chrysomelidae) Emergence

M. M. Ellsbury;W. D. Woodson;S. A. Clay;D. Malo

90
Citations
Sampling weed spatial variability on a fieldwide scale

S. A. Clay;G. J. Lems;D. E. Clay;F. Forcella

89
Citations
Nitrogen and Water Stress Interact to Influence Carbon‐13 Discrimination in Wheat

D. E. Clay;R. E. Engel;D. S. Long;Z. Liu

89
Citations
GIS Applications in Agriculture

Francis J. Pierce;David E. Clay

82
Citations
Does the conversion of grasslands to row crop production in semi-arid areas threaten global food supplies?

David E. Clay;Sharon A. Clay;Kurtis D. Reitsma;Barry H. Dunn

75
Citations