World's Best Scientists 2026 revealed!

D-Index & Metrics

Plant Science and Agronomy

D-Index
75
Citations
17455
World Ranking
550
National Ranking
165

James H. Graham 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 James H. Graham 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: 238 publications — 85th percentile

85% of scientists in this discipline score the same or lower.

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

James H. Graham 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 James H. Graham 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: 75 D-Index — 92nd percentile

92% 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:

  • Botany
  • Ecology
  • Bacteria

Botany, Mycorrhiza, Citrus canker, Horticulture and Rutaceae are his primary areas of study. His study ties his expertise on Candidatus Liberibacter together with the subject of Botany. His study on Mycorrhiza is covered under Symbiosis.

His studies deal with areas such as Canker, Xanthomonas citri and Cultivar as well as Citrus canker. His Rutaceae research integrates issues from Rootstock, Trifoliate orange and Orange. His study looks at the intersection of Rootstock and topics like Transpiration with Agronomy.

His most cited work include:

  • Functioning of mycorrhizal associations along the mutualism–parasitism continuum* (1420 citations)
  • Growth Depression in Mycorrhizal Citrus at High-Phosphorus Supply (Analysis of Carbon Costs) (314 citations)
  • Xanthomonas axonopodis pv. citri: factors affecting successful eradication of citrus canker. (303 citations)

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

His primary scientific interests are in Horticulture, Botany, Citrus canker, Xanthomonas citri and Agronomy. His Botany study frequently links to adjacent areas such as Inoculation. His Citrus canker study combines topics in areas such as Plant disease resistance, Cultivar, Xanthomonas axonopodis, Canker and Genome.

His study in Agronomy is interdisciplinary in nature, drawing from both Nutrient, Soil water, Mycorrhiza and Transpiration. His Mycorrhiza study integrates concerns from other disciplines, such as Glomus and Shoot. His Rutaceae research is multidisciplinary, relying on both Citrus fruit, Trifoliate orange, Phycomycetes and Xanthomonas campestris.

He most often published in these fields:

  • Horticulture (42.41%)
  • Botany (39.79%)
  • Citrus canker (32.46%)

What were the highlights of his more recent work (between 2016-2021)?

  • Horticulture (42.41%)
  • Citrus canker (32.46%)
  • Xanthomonas citri (23.56%)

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

His primary areas of investigation include Horticulture, Citrus canker, Xanthomonas citri, Plant disease resistance and Pathogen. His work carried out in the field of Citrus canker brings together such families of science as Phytotoxicity and Canker. His research integrates issues of Extracellular, Order Xanthomonadales, Genus Xanthomonas and Orange in his study of Xanthomonas citri.

His Plant disease resistance research includes themes of Citrus paradisi and Nuclear gene. He has researched Pathogen in several fields, including Rootstock, Phytophthora nicotianae, Inoculation, Phytosanitary certification and Citrus fruit. Genetics and Botany are commonly linked in his work.

Between 2016 and 2021, his most popular works were:

  • Little evidence that farmers should consider abundance or diversity of arbuscular mycorrhizal fungi when managing crops. (86 citations)
  • Recent advances in the understanding of Xanthomonas citri ssp. citri pathogenesis and citrus canker disease management. (40 citations)
  • Tale of the Huanglongbing Disease Pyramid in the Context of the Citrus Microbiome (24 citations)

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

  • Botany
  • Ecology
  • Bacteria

His primary areas of study are Horticulture, Citrus canker, Plant disease resistance, Agriculture and Agroforestry. His Horticulture study incorporates themes from Genetically modified crops and Protoplast. His Citrus canker research integrates issues from Phylum Proteobacteria, Xanthomonas citri, Transformation and Orange.

The concepts of his Xanthomonas citri study are interwoven with issues in Genome, Nuclear gene and Citrus paradisi. His work carried out in the field of Agriculture brings together such families of science as Community structure, Arbuscular mycorrhizal symbiosis and Crop. James H. Graham interconnects Crop yield, Yield, Colonisation and Sustainability in the investigation of issues within Agroforestry.

Best Publications

  • Functioning of mycorrhizal associations along the mutualism–parasitism continuum*

    N. C. Johnson;J. H. Graham;F. A. Smith

  • Xanthomonas axonopodis pv. citri: factors affecting successful eradication of citrus canker.

    James H. Graham;Tim R. Gottwald;Jaime Cubero;Diann S. Achor

  • Citrus Canker: The Pathogen and Its Impact

    Unknown

  • Growth Depression in Mycorrhizal Citrus at High-Phosphorus Supply (Analysis of Carbon Costs)

    Shaobing Peng;David M. Eissenstat;James H. Graham;Kimberlyn Williams

  • Is there a role for arbuscular mycorrhizal fungi in production agriculture

    Megan H. Ryan;James H. Graham

  • Little evidence that farmers should consider abundance or diversity of arbuscular mycorrhizal fungi when managing crops.

    Megan H. Ryan;James H. Graham

  • Meeting the challenge of Eradicating Citrus Canker in Florida-Again.

    Unknown

  • Fatty Acid methyl ester profiles for characterization of glomalean fungi and their endomycorrhizae.

    J H Graham;N C Hodge;J B Morton

  • Association of ‘Candidatus Liberibacter asiaticus’ root infection, but not phloem plugging with root loss on huanglongbing-affected trees prior to appearance of foliar symptoms

    E. G. Johnson;J. Wu;D. B. Bright;J. H. Graham

  • The citrus canker epidemic in Florida: the scientific basis of regulatory eradication policy for an invasive species.

    Tim R. Gottwald;Gareth Hughes;James H. Graham;Xiaoan Sun

  • Wheat responses to aggressive and non-aggressive arbuscular mycorrhizal fungi.

    J.H. Graham;Lynette Abbott

  • Nematode communities as indicators of status and processes of a soil ecosystem influenced by agricultural management practices

    D.L Porazinska;L.W Duncan;R McSorley;J.H Graham

  • Genetic Relationship among Worldwide Strains of Xanthomonas Causing Canker in Citrus Species and Design of New Primers for Their Identification by PCR

    J. Cubero;J. H. Graham

  • The continuum concept remains a useful framework for studying mycorrhizal functioning

    Nancy Collins Johnson;James H. Graham

  • HOST DETERMINANTS OF MYCORRHIZAL DEPENDENCY OF CITRUS ROOTSTOCK SEEDLINGS

    J. H. Graham;J. P. Syvertsen

  • Carbon Economy of Sour Orange in Relation to Mycorrhizal Colonization and Phosphorus Status

    D. M. Eissenstat;J. H. Graham;J. P. Syvertsen;D. L. Drouillard

  • INFLUENCE OF VESICULAR–ARBUSCULAR MYCORRHIZA ON THE HYDRAULIC CONDUCTIVITY OF ROOTS OF TWO CITRUS ROOTSTOCKS

    J. H. Graham;J. P. Syvertsen

  • Geo-referenced spatiotemporal analysis of the urban citrus canker epidemic in Florida

    Tim R. Gottwald;Xiaoan Sun;Tim Riley;James H. Graham

  • Molecular characterization of copper resistance genes from Xanthomonas citri subsp. citri and Xanthomonas alfalfae subsp. citrumelonis

    Franklin Behlau;Blanca I. Canteros;Gerald V. Minsavage;Jeffrey B. Jones

  • Inconsequential effect of nutritional treatments on huanglongbing control, fruit quality, bacterial titer and disease progress

    T.R. Gottwald;J.H. Graham;M.S. Irey;T.G. McCollum

  • Comparison of soil bacterial communities under diverse agricultural land management and crop production practices.

    Tiehang Wu;Tiehang Wu;Tiehang Wu;Daniel O. Chellemi;James H. Graham;Kendall J. Martin

  • What do root pathogens see in mycorrhizas

    James H. Graham

  • Host genotype and the formation and function of VA mycorrhizae

    J. H. Graham;D. M. Eissenstat

Frequent Co-Authors

James P. Syvertsen
James P. Syvertsen University of Florida
Lavern W. Timmer
Lavern W. Timmer University of Florida
Clive H. Bock
Clive H. Bock United States Department of Agriculture
Jeffrey B. Jones
Jeffrey B. Jones University of Florida
David M. Eissenstat
David M. Eissenstat Pennsylvania State University
Jude W. Grosser
Jude W. Grosser University of Florida
Nian Wang
Nian Wang University of Florida
Kaoru Kitajima
Kaoru Kitajima Kyoto University
Dorota L. Porazinska
Dorota L. Porazinska University of Florida
João C. Setubal
João C. Setubal Universidade de São Paulo

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