World's Best Scientists 2026 revealed!

D-Index & Metrics

Plant Science and Agronomy

D-Index
49
Citations
12998
World Ranking
2218
National Ranking
176

Garry O'Leary 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 Garry O'Leary 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: 140 publications — 53rd percentile

53% of scientists in this discipline score the same or lower.

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

Garry O'Leary 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 Garry O'Leary 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: 49 D-Index — 66th percentile

66% of scientists in this discipline score the same or lower.

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

Overview

What is he best known for?

The fields of study he is best known for:

  • Agriculture
  • Agronomy
  • Ecology

The scientist’s investigation covers issues in Agronomy, Crop, Climate change, Crop yield and Simulation modeling. His work on Agronomy is being expanded to include thematically relevant topics such as Arid. His work focuses on many connections between Crop and other disciplines, such as Canopy, that overlap with his field of interest in Chlorophyll.

The study incorporates disciplines such as Climatology, Grain quality and Yield in addition to Climate change. His research integrates issues of Global warming and Agriculture in his study of Yield. His research investigates the connection between Crop yield and topics such as Hydrology that intersect with problems in Calibration, Ensemble forecasting, Estimator and Statistics.

His most cited work include:

  • Rising Temperatures Reduce Global Wheat Production (801 citations)
  • Uncertainty in Simulating Wheat Yields Under Climate Change (749 citations)
  • Multimodel ensembles of wheat growth: many models are better than one (254 citations)

What are the main themes of his work throughout his whole career to date?

His scientific interests lie mostly in Agronomy, Crop, Climate change, Soil water and Water use. His research in Sowing, Cultivar, Tillage, Phenology and Anthesis are components of Agronomy. His work carried out in the field of Crop brings together such families of science as Growing season, Biomass, Canopy, Plant breeding and Yield.

He integrates many fields in his works, including Climate change and Simulation modeling. His research integrates issues of Pasture, Water-use efficiency, Stomatal conductance, Crop rotation and Soil horizon in his study of Water use. Garry O'Leary has included themes like Global warming, Climatology, Crop yield and Atmospheric sciences in his Yield study.

He most often published in these fields:

  • Agronomy (69.92%)
  • Crop (28.46%)
  • Climate change (24.39%)

What were the highlights of his more recent work (between 2015-2021)?

  • Agronomy (69.92%)
  • Climate change (24.39%)
  • Crop (28.46%)

In recent papers he was focusing on the following fields of study:

His main research concerns Agronomy, Climate change, Crop, Cultivar and Cropping. His study in Anthesis, Water use, Phenology, Water-use efficiency and Growing season are all subfields of Agronomy. In his works, Garry O'Leary performs multidisciplinary study on Growing season and Simulation modeling.

The study incorporates disciplines such as Yield, Agriculture, Agricultural productivity, Atmospheric sciences and Crop yield in addition to Climate change. His Crop study combines topics from a wide range of disciplines, such as Canola, Biomass, Soil nitrogen, Frost and Yield. The Cultivar study combines topics in areas such as Arid, Grain yield, Irrigation and Sowing.

Between 2015 and 2021, his most popular works were:

  • Similar estimates of temperature impacts on global wheat yield by three independent methods (180 citations)
  • The uncertainty of crop yield projections is reduced by improved temperature response functions. (99 citations)
  • Climate change impact and adaptation for wheat protein (97 citations)

In his most recent research, the most cited papers focused on:

  • Agriculture
  • Ecology
  • Agronomy

His primary scientific interests are in Climate change, Agronomy, Simulation modeling, Yield and Agriculture. Garry O'Leary has researched Climate change in several fields, including Cropping, Crop yield, Food security and Hydrology. His work in Agronomy is not limited to one particular discipline; it also encompasses Transpiration.

Garry O'Leary interconnects Natural resource and Futures studies in the investigation of issues within Agriculture. In his research, Atmospheric sciences is intimately related to Soil water, which falls under the overarching field of Water use. The various areas that Garry O'Leary examines in his Crop study include Cultivar, Vapour Pressure Deficit and Phenology.

Best Publications

  • Rising Temperatures Reduce Global Wheat Production

    S. Asseng;F. Ewert;P. Martre;P. Martre;R. P. Rötter

  • Uncertainty in Simulating Wheat Yields Under Climate Change

    S. Asseng;F. Ewert;C. Rosenzweig;J. W. Jones

  • Simulating the impact of extreme heat and frost events on wheat crop production: a review

    K.M. Barlow;B.P. Christy;G.J. O’Leary;P.A. Riffkin

  • Similar estimates of temperature impacts on global wheat yield by three independent methods

    Bing Liu;Bing Liu;Senthold Asseng;Christoph Müller;Frank Ewert

  • Multimodel ensembles of wheat growth: many models are better than one

    Pierre Martre;Pierre Martre;Daniel Wallach;Senthold Asseng;Frank Ewert

  • Climate change impact and adaptation for wheat protein

    Senthold Asseng;Pierre Martre;Andrea Maiorano;Reimund P Rötter

  • Measuring and predicting canopy nitrogen nutrition in wheat using a spectral index—The canopy chlorophyll content index (CCCI)

    Glenn Fitzgerald;Daniel Rodriguez;Garry O’Leary

  • Remote sensing of nitrogen and water stress in wheat

    Adam K. Tilling;Garry J. O’Leary;Jelle G. Ferwerda;Simon D. Jones

  • The uncertainty of crop yield projections is reduced by improved temperature response functions.

    Enli Wang;Pierre Martre;Zhigan Zhao;Zhigan Zhao;Frank Ewert

  • Models of grain quality in wheat—A review

    J.G. Nuttall;G.J. O'Leary;J.F. Panozzo;C.K. Walker

  • Climate change impact on rainfed wheat in south-eastern Australia

    Muhuddin Rajin Anwar;Garry O’Leary;David McNeil;Hemayet Hossain

  • Interception of photosynthetically active radiation and radiation-use efficiency of wheat, field pea and mustard in a semi-arid environment

    M.G. O’Connell;G.J. O’Leary;D.M. Whitfield;D.J. Connor

  • Elevated atmospheric [CO2] can dramatically increase wheat yields in semi‐arid environments and buffer against heat waves

    Glenn J. Fitzgerald;Michael Tausz;Garry O'Leary;Mahabubur R. Mollah

  • Global wheat production with 1.5 and 2.0°C above pre-industrial warming

    Bing Liu;Pierre Martre;Frank Ewert;John R. Porter;John R. Porter;John R. Porter

  • Multimodel ensembles improve predictions of crop-environment-management interactions.

    Daniel Wallach;Pierre Martre;Bing Liu;Bing Liu;Senthold Asseng

  • Response of wheat growth, grain yield and water use to elevated CO2 under a Free‐Air CO2 Enrichment (FACE) experiment and modelling in a semi‐arid environment

    Garry J. O'Leary;Brendan Christy;James Nuttall;Neil Huth

  • Crop Model Improvement Reduces the Uncertainty of the Response to Temperature of Multi-Model Ensembles

    Andrea Maiorano;Pierre Martre;Senthold Asseng;Frank Ewert

  • Narrowing uncertainties in the effects of elevated CO2 on crops

    Andrea Toreti;Delphine Deryng;Francesco N. Tubiello;Christoph Müller

  • Crop responses to compacted soil: capture and efficiency in the use of water and radiation

    Víctor O. Sadras;Garry J. O’Leary;David K. Roget

  • Stubble retention and tillage in a semi-arid environment: 1. Soil water accumulation during fallow

    G.J. O'Leary;D.J. Connor

  • A review of three sugarcane simulation models with respect to their prediction of sucrose yield

    Garry J O’Leary

Frequent Co-Authors

Glenn J. Fitzgerald
Glenn J. Fitzgerald University of Melbourne
Bruno Basso
Bruno Basso Michigan State University
Senthold Asseng
Senthold Asseng Technical University of Munich
Davide Cammarano
Davide Cammarano Aarhus University
Andrew J. Challinor
Andrew J. Challinor University of Leeds
Pierre Martre
Pierre Martre INRAE : Institut national de recherche pour l'agriculture, l'alimentation et l'environnement
Katharina Waha
Katharina Waha Commonwealth Scientific and Industrial Research Organisation
Roberto C. Izaurralde
Roberto C. Izaurralde University of Maryland, College Park
Reimund P. Rötter
Reimund P. Rötter University of Göttingen
Claudio O. Stöckle
Claudio O. Stöckle Washington State University

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