World's Best Scientists 2026 revealed!

D-Index & Metrics

Plant Science and Agronomy

D-Index
40
Citations
6932
World Ranking
3878
National Ranking
965

Environmental Sciences

D-Index
40
Citations
6972
World Ranking
8023
National Ranking
2866

David E. Clay publication distribution in Plant Science and Agronomy in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Plant Science and Agronomy in 2026. The highlighted bar marks where David E. Clay sits on this spectrum.

36–40 publications: 2 scientists 41–45 publications: 7 scientists 46–50 publications: 40 scientists 51–55 publications: 58 scientists 56–60 publications: 60 scientists 61–65 publications: 107 scientists 66–70 publications: 130 scientists 71–75 publications: 153 scientists 76–80 publications: 191 scientists 81–85 publications: 199 scientists 86–90 publications: 206 scientists 91–95 publications: 218 scientists 96–100 publications: 226 scientists 101–105 publications: 227 scientists 106–110 publications: 247 scientists 111–115 publications: 255 scientists 116–120 publications: 253 scientists 121–125 publications: 233 scientists 126–130 publications: 219 scientists 131–135 publications: 201 scientists 136–140 publications: 194 scientists 141–145 publications: 176 scientists 146–150 publications: 157 scientists 151–155 publications: 147 scientists 156–160 publications: 151 scientists 161–165 publications: 159 scientists 166–170 publications: 137 scientists 171–175 publications: 128 scientists 176–180 publications: 126 scientists 181–185 publications: 98 scientists 186–190 publications: 114 scientists 191–195 publications: 100 scientists 196–200 publications: 90 scientists 201–205 publications: 71 scientists 206–210 publications: 98 scientists 211–215 publications: 70 scientists 216–220 publications: 86 scientists 221–225 publications: 61 scientists 226–230 publications: 58 scientists 231–235 publications: 53 scientists 236–240 publications: 64 scientists 241–245 publications: 39 scientists 246–250 publications: 46 scientists 251–255 publications: 51 scientists 256–260 publications: 36 scientists 261–265 publications: 44 scientists 266–270 publications: 35 scientists 271–275 publications: 30 scientists 276–280 publications: 33 scientists 281–285 publications: 35 scientists 286–290 publications: 36 scientists 291–295 publications: 26 scientists 296–300 publications: 26 scientists 301–305 publications: 31 scientists 306–310 publications: 30 scientists 311–315 publications: 21 scientists 316–320 publications: 29 scientists 321–325 publications: 14 scientists 326–330 publications: 15 scientists 331–335 publications: 15 scientists 336–340 publications: 17 scientists 341–345 publications: 15 scientists 346–350 publications: 12 scientists 351–355 publications: 17 scientists 356–360 publications: 18 scientists 361–365 publications: 12 scientists 366–370 publications: 11 scientists 371–375 publications: 6 scientists 376–380 publications: 6 scientists 381–385 publications: 11 scientists 386–390 publications: 9 scientists 391–395 publications: 10 scientists 396–400 publications: 8 scientists 401–405 publications: 4 scientists 406–410 publications: 9 scientists 411–415 publications: 11 scientists 416–420 publications: 4 scientists 421–425 publications: 7 scientists 426–430 publications: 4 scientists 431–435 publications: 3 scientists 436–440 publications: 5 scientists 441–445 publications: 8 scientists 446–450 publications: 6 scientists 451–455 publications: 7 scientists 456–460 publications: 5 scientists 461–465 publications: 6 scientists 466 publications: 2 scientists 467+ publications: 99 scientists
36 publications 467+

This scientist: 250 publications — 87th percentile

87% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 467 publications or more.

David E. Clay D-index placement in Plant Science and Agronomy in 2026

The chart shows the D-index (discipline H-index) distribution of Plant Science and Agronomy scientists ranked by Research.com in 2026. The highlighted bar marks where David E. Clay sits on this spectrum.

30 D-Index: 200 scientists 31 D-Index: 236 scientists 32 D-Index: 253 scientists 33 D-Index: 283 scientists 34 D-Index: 288 scientists 35 D-Index: 240 scientists 36 D-Index: 246 scientists 37 D-Index: 243 scientists 38 D-Index: 247 scientists 39 D-Index: 229 scientists 40 D-Index: 232 scientists 41 D-Index: 230 scientists 42 D-Index: 228 scientists 43 D-Index: 219 scientists 44 D-Index: 193 scientists 45 D-Index: 164 scientists 46 D-Index: 158 scientists 47 D-Index: 143 scientists 48 D-Index: 131 scientists 49 D-Index: 127 scientists 50 D-Index: 122 scientists 51 D-Index: 122 scientists 52 D-Index: 110 scientists 53 D-Index: 102 scientists 54 D-Index: 98 scientists 55 D-Index: 79 scientists 56 D-Index: 85 scientists 57 D-Index: 88 scientists 58 D-Index: 91 scientists 59 D-Index: 62 scientists 60 D-Index: 61 scientists 61 D-Index: 59 scientists 62 D-Index: 54 scientists 63 D-Index: 61 scientists 64 D-Index: 59 scientists 65 D-Index: 58 scientists 66 D-Index: 41 scientists 67 D-Index: 49 scientists 68 D-Index: 39 scientists 69 D-Index: 32 scientists 70 D-Index: 40 scientists 71 D-Index: 47 scientists 72 D-Index: 38 scientists 73 D-Index: 28 scientists 74 D-Index: 29 scientists 75 D-Index: 28 scientists 76 D-Index: 22 scientists 77 D-Index: 21 scientists 78 D-Index: 25 scientists 79 D-Index: 26 scientists 80 D-Index: 19 scientists 81 D-Index: 16 scientists 82 D-Index: 12 scientists 83 D-Index: 16 scientists 84 D-Index: 14 scientists 85 D-Index: 11 scientists 86 D-Index: 17 scientists 87 D-Index: 13 scientists 88 D-Index: 10 scientists 89 D-Index: 12 scientists 90 D-Index: 18 scientists 91 D-Index: 16 scientists 92 D-Index: 16 scientists 93 D-Index: 17 scientists 94 D-Index: 12 scientists 95 D-Index: 8 scientists 96 D-Index: 9 scientists 97 D-Index: 9 scientists 98 D-Index: 11 scientists 99 D-Index: 12 scientists 100 D-Index: 5 scientists 101 D-Index: 8 scientists 102 D-Index: 4 scientists 103 D-Index: 11 scientists 104 D-Index: 5 scientists 105 D-Index: 9 scientists 106 D-Index: 7 scientists 107 D-Index: 4 scientists 108 D-Index: 8 scientists 109+ D-Index: 99 scientists
30 D-Index 109+

This scientist: 40 D-Index — 42nd percentile

42% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 109 D-Index or more.

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

  • Phosphorus Sorption and Availability from Biochars and Soil/Biochar Mixtures

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

  • Nitrate sorption and desorption in biochars from fast pyrolysis

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

  • 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

  • Crop Residue Management Challenges: A Special Issue Overview

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

  • Molecular characterization of biochars and their influence on microbiological properties of soil

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

  • Using soil electrical conductivity to improve nutrient management

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

  • 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

  • Characterizing Water and Nitrogen Stress in Corn Using Remote Sensing

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

  • 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

  • Sewage sludge organic matter and soil properties

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

  • 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

  • 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

  • Maize-N: A Decision Tool for Nitrogen Management in Maize

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

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

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

  • Winter Cover Crops Impact on Corn Production in Semiarid Regions

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

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

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

  • Sampling weed spatial variability on a fieldwide scale

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

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

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

  • GIS Applications in Agriculture

    Francis J. Pierce;David E. Clay

  • 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

Frequent Co-Authors

Sharon A. Clay
Sharon A. Clay South Dakota State University
Thomas E. Schumacher
Thomas E. Schumacher South Dakota State University
Frank Forcella
Frank Forcella Agricultural Research Service
David P. Horvath
David P. Horvath Agricultural Research Service
Newell R. Kitchen
Newell R. Kitchen Agricultural Research Service
Umakant Mishra
Umakant Mishra Sandia National Laboratories
Tong Wang
Tong Wang University of Tennessee at Knoxville
William J. Wiebold
William J. Wiebold University of Missouri
Kurt D. Thelen
Kurt D. Thelen Michigan State University
Douglas L. Karlen
Douglas L. Karlen Iowa State University

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