World's Best Scientists 2026 revealed!

D-Index & Metrics

Plant Science and Agronomy

D-Index
59
Citations
13232
World Ranking
1266
National Ranking
50

James J. Germida 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 J. Germida 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: 160 publications — 62nd percentile

62% of scientists in this discipline score the same or lower.

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

James J. Germida 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 J. Germida 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: 59 D-Index — 81st percentile

81% 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:

  • Ecology
  • Botany
  • Agriculture

James J. Germida mainly investigates Rhizosphere, Agronomy, Microbial population biology, Botany and Canola. His specific area of interest is Rhizosphere, where James J. Germida studies Rhizobacteria. The various areas that he examines in his Rhizobacteria study include Phosphorite, Bacilli, Microbial inoculant and Xanthomonas.

James J. Germida combines subjects such as Soil structure, Soil water, No-till farming and Organic matter with his study of Agronomy. James J. Germida has researched Botany in several fields, including Phytoremediation, Arbuscular mycorrhizal symbiosis and Mineralization. His Phytoremediation research incorporates elements of Environmental chemistry and Soil Pollutants.

His most cited work include:

  • Distribution of microbial biomass and its activity in different soil aggregate size classes as affected by cultivation (532 citations)
  • Phosphate-solubilizing rhizobacteria enhance the growth and yield but not phosphorus uptake of canola (Brassica napus L.) (505 citations)
  • Changes in microbial community composition and function during a polyaromatic hydrocarbon phytoremediation field trial (269 citations)

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

His main research concerns Agronomy, Botany, Rhizosphere, Soil water and Phytoremediation. James J. Germida interconnects Microbial population biology, Inoculation, Microbial inoculant and Colonization in the investigation of issues within Agronomy. In his study, Pseudomonas putida is inextricably linked to Pseudomonas, which falls within the broad field of Botany.

His research in Rhizosphere focuses on subjects like Brassica, which are connected to Genetically modified canola. His Soil water research includes elements of Biomass, Fertilizer, Nutrient and Growing season. His Phytoremediation study combines topics in areas such as Soil contamination, Bioremediation, Microorganism, Environmental remediation and Environmental chemistry.

He most often published in these fields:

  • Agronomy (37.98%)
  • Botany (34.88%)
  • Rhizosphere (24.81%)

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

  • Botany (34.88%)
  • Agronomy (37.98%)
  • Rhizosphere (24.81%)

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

His primary scientific interests are in Botany, Agronomy, Rhizosphere, Microbiome and Horticulture. His studies in Botany integrate themes in fields like Environmental remediation, Acidobacteria, Gemmatimonadetes and Root microbiome. His Agronomy research is multidisciplinary, incorporating elements of Climate change and Microbial inoculant.

His biological study spans a wide range of topics, including Soil water, Community structure, Revegetation and Microbial population biology. The Soil water study combines topics in areas such as Agriculture, Organic matter and Arbuscular mycorrhizal. His Horticulture research is multidisciplinary, incorporating perspectives in Symbiosis and Abiotic stress.

Between 2016 and 2021, his most popular works were:

  • Bacterial Root Microbiome of Plants Growing in Oil Sands Reclamation Covers (34 citations)
  • Seed endosymbiosis: a vital relationship in providing prenatal care to plants1 (24 citations)
  • Endophytic root bacteria associated with the natural vegetation growing at the hydrocarbon-contaminated Bitumount Provincial Historic site. (19 citations)

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

  • Ecology
  • Botany
  • Agriculture

His primary areas of investigation include Botany, Rhizosphere, Acidobacteria, Root microbiome and Gemmatimonadetes. The concepts of his Botany study are interwoven with issues in Microorganism, Phytoremediation and Environmental remediation. His Rhizosphere study integrates concerns from other disciplines, such as Soil water, Agronomy and Microbial population biology.

His work deals with themes such as Organic matter, Total organic carbon, Rhizobiales, Community structure and Revegetation, which intersect with Soil water. His study in Microbial population biology is interdisciplinary in nature, drawing from both Burkholderiales and Dominance, Ecology, Land reclamation. His Acidobacteria study combines topics from a wide range of disciplines, such as Melilotus albus, Edaphic, Pantoea and Hordeum vulgare.

Best Publications

  • Phosphate-solubilizing rhizobacteria enhance the growth and yield but not phosphorus uptake of canola (Brassica napus L.)

    J. R. de Freitas;M. R. Banerjee;J. J. Germida

  • Distribution of microbial biomass and its activity in different soil aggregate size classes as affected by cultivation

    V.V.S.R. Gupta;J.J. Germida

  • Diversity of root-associated bacteria associated with field-grown canola (Brassica napus L.) and wheat (Triticum aestivum L.)

    James J. Germida;Steven D. Siciliano;J. Renato de Freitas;Arlette M. Seib

  • Changes in microbial community composition and function during a polyaromatic hydrocarbon phytoremediation field trial

    Steven D. Siciliano;James J. Germida;Kathy Banks;Charles W. Greer

  • Soil aggregation: Influence on microbial biomass and implications for biological processes

    Vadakattu V.S.R. Gupta;James J. Germida

  • No-till soil management increases microbial biomass and alters community profiles in soil aggregates

    B.L. Helgason;F.L. Walley;J.J. Germida

  • Mechanisms of phytoremediation: biochemical and ecological interactions between plants and bacteria

    S D Siciliano;J J Germida

  • Rethinking Crop Nutrition in Times of Modern Microbiology: Innovative Biofertilizer Technologies

    Eduardo K. Mitter;Micaela Tosi;Dasiel Obregón;Dasiel Obregón;Kari E. Dunfield

  • Taxonomic diversity of bacteria associated with the roots of modern, recent and ancient wheat cultivars

    J. J. Germida;S. D. Siciliano

  • Impact of genetically modified crops on soil- and plant-associated microbial communities.

    Kari E. Dunfield;James J. Germida

  • Factors affecting the oxidation of elemental sulfur in soils

    J. J. Germida;H. H. Janzen

  • Seasonal Changes in the Rhizosphere Microbial Communities Associated with Field-Grown Genetically Modified Canola (Brassica napus)

    Kari E. Dunfield;James J. Germida

  • Fungal and Bacterial Abundance in Long-Term No-Till and Intensive-Till Soils of the Northern Great Plains

    Bobbi L. Helgason;Fran L. Walley;James J. Germida

  • Taxonomic diversity of bacteria associated with the roots of field‐grown transgenic Brassica napus cv. Quest, compared to the non‐transgenic B. napus cv. Excel and B. rapa cv. Parkland

    S.D Siciliano;J.J Germida

  • Differences in the microbial communities associated with the roots of different cultivars of canola and wheat

    S D Siciliano;C M Theoret;J R de Freitas;P J Hucl

  • Fungal endophytes enhance wheat heat and drought tolerance in terms of grain yield and second‐generation seed viability

    M. Hubbard;J.J. Germida;V. Vujanovic

  • The arbuscular mycorrhizal symbiosis links N mineralization to plant demand.

    A. Atul-Nayyar;A. Atul-Nayyar;C. Hamel;C. Hamel;K. Hanson;J. Germida

  • Phytoremediation of organic contaminants in soil and groundwater.

    Thomas G. Reichenauer;James J. Germida

  • Diversity of bacterial communities in the rhizosphere and root interior of field‐grown genetically modified Brassica napus

    Kari E. Dunfield;James J. Germida

  • Bacteria associated with Glomus clarum spores influence mycorrhizal activity

    Lisette J.C Xavier;James J Germida

  • Assessment of Phytoremediation as an In-Situ Technique for Cleaning Oil-Contaminated Sites

    C. M. Frick;R. E. Farrell;J. J. Germida

Frequent Co-Authors

Steven D. Siciliano
Steven D. Siciliano University of Saskatchewan
Charles W. Greer
Charles W. Greer National Research Council Canada
Vadakattu V. S. R. Gupta
Vadakattu V. S. R. Gupta Commonwealth Scientific and Industrial Research Organisation
John V. Headley
John V. Headley Environment and Climate Change Canada
Kari E. Dunfield
Kari E. Dunfield University of Guelph
F.L. Walley
F.L. Walley University of Saskatchewan
Kerry M. Peru
Kerry M. Peru Environment and Climate Change Canada
Chantal Hamel
Chantal Hamel Agriculture and Agriculture-Food Canada
John R. Lawrence
John R. Lawrence Environment and Climate Change Canada
Pierre Hucl
Pierre Hucl University of Saskatchewan

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