World's Best Scientists 2026 revealed!

D-Index & Metrics

Plant Science and Agronomy

D-Index
72
Citations
28967
World Ranking
610
National Ranking
182

Gary E. Harman 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 Gary E. Harman 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: 194 publications — 75th percentile

75% of scientists in this discipline score the same or lower.

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

Gary E. Harman 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 Gary E. Harman 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: 72 D-Index — 91st percentile

91% 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:

  • Enzyme
  • Botany
  • Fungus

Gary E. Harman mainly focuses on Trichoderma harzianum, Trichoderma, Botany, Biological pest control and Endochitinase activity. His Trichoderma harzianum research is multidisciplinary, relying on both Fungi imperfecti, Biochemistry, Microbiology, Botrytis cinerea and Pythium ultimum. His Trichoderma study is concerned with the larger field of Biotechnology.

His work deals with themes such as Plant disease resistance, Colonization, Abiotic component and Horticulture, which intersect with Botany. His research in Biological pest control intersects with topics in Natural enemies and Pythium. His studies deal with areas such as cDNA library, Open reading frame and Chromatography, Agarose as well as Endochitinase activity.

His most cited work include:

  • Trichoderma species--opportunistic, avirulent plant symbionts. (2204 citations)
  • Myths and Dogmas of Biocontrol Changes in Perceptions Derived from Research on Trichoderma harzinum T-22. (749 citations)
  • Induced Systemic Resistance and Plant Responses to Fungal Biocontrol Agents (700 citations)

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

His primary scientific interests are in Botany, Trichoderma harzianum, Trichoderma, Microbiology and Biological pest control. His research investigates the link between Botany and topics such as Plant disease resistance that cross with problems in Genetically modified crops and Apple scab. His Trichoderma harzianum study combines topics in areas such as Botrytis cinerea, Endochitinase activity, Agronomy and Strain.

While the research belongs to areas of Trichoderma, Gary E. Harman spends his time largely on the problem of Fungi imperfecti, intersecting his research to questions surrounding Protoplast. His Microbiology research is multidisciplinary, incorporating perspectives in Enzyme, Chitinase, Cellulase and Transformation. He has included themes like Biotechnology, Natural enemies and Colonization in his Biological pest control study.

He most often published in these fields:

  • Botany (36.16%)
  • Trichoderma harzianum (31.64%)
  • Trichoderma (27.12%)

What were the highlights of his more recent work (between 2005-2021)?

  • Trichoderma (27.12%)
  • Botany (36.16%)
  • Trichoderma harzianum (31.64%)

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

Gary E. Harman spends much of his time researching Trichoderma, Botany, Trichoderma harzianum, Biotechnology and Microorganism. His Trichoderma research integrates issues from Proteome, Agronomy, Proteomics, Microbiology and Biological pest control. His Microbiology research is multidisciplinary, incorporating elements of Transcriptome and Enzyme, Chitinase.

Gary E. Harman has researched Botany in several fields, including Competition and Abiotic component. His work carried out in the field of Trichoderma harzianum brings together such families of science as Peroxidase, Genetics and Abiotic stress. The study incorporates disciplines such as Substrate, Food science, Trichoderma viride and Organic fertilizer in addition to Microorganism.

Between 2005 and 2021, his most popular works were:

  • Induced Systemic Resistance and Plant Responses to Fungal Biocontrol Agents (700 citations)
  • Overview of Mechanisms and Uses of Trichoderma spp. (669 citations)
  • Translational Research on Trichoderma: From 'Omics to the Field (351 citations)

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

  • Botany
  • Enzyme
  • Fungus

His main research concerns Trichoderma, Botany, Biotechnology, Trichoderma harzianum and Abiotic component. His research integrates issues of Plant growth, Agronomy, Proteomics and Biological pest control in his study of Trichoderma. His Biological pest control research incorporates elements of Transcriptome, Thallus, Photosynthetic efficiency, Nutrient and Fungus.

In his papers, he integrates diverse fields, such as Botany and Materials science. The various areas that he examines in his Trichoderma harzianum study include Biotic stress, Seed treatment, Germination, Peroxidase and Shoot. His research in Abiotic component intersects with topics in Pythium ultimum, Fungi imperfecti, Abiotic stress and Seedling.

Best Publications

  • Trichoderma species--opportunistic, avirulent plant symbionts.

    Gary E. Harman;Charles R. Howell;Ada Viterbo;Ilan Chet

  • Myths and Dogmas of Biocontrol Changes in Perceptions Derived from Research on Trichoderma harzinum T-22.

    G E Harman

  • Overview of Mechanisms and Uses of Trichoderma spp.

    Gary E. Harman

  • Induced Systemic Resistance and Plant Responses to Fungal Biocontrol Agents

    Michal Shoresh;Gary E. Harman;Fatemeh Mastouri

  • Solubilization of phosphates and micronutrients by the plant-growth-promoting and biocontrol fungus trichoderma harzianum rifai 1295-22

    C. Altomare;W. A. Norvell;T. Björkman;G. E. Harman

  • Translational Research on Trichoderma: From 'Omics to the Field

    Matteo Lorito;Sheridan L. Woo;Gary E. Harman;Enrique Monte

  • CHITINOLYTIC ENZYMES PRODUCED BY TRICHODERMA HARZIANUM; ANTIFUNGAL ACTIVITY OF PURIFIED ENDOCHITINASE AND CHITOBIOSIDASE

    M. Lorito;G.E. Harman;C.K. Hayes;R.M. Broadway

  • Genes from mycoparasitic fungi as a source for improving plant resistance to fungal pathogens.

    Matteo Lorito;Sheridan L. Woo;Irene Garcia Fernandez;Gabriella Colucci

  • Seed Treatment with Trichoderma harzianum Alleviates Biotic, Abiotic, and Physiological Stresses in Germinating Seeds and Seedlings

    Fatemeh Mastouri;Thomas Björkman;Gary E. Harman

  • Parallel formation and synergism of hydrolytic enzymes and peptaibol antibiotics, molecular mechanisms involved in the antagonistic action of Trichoderma harzianum against phytopathogenic fungi

    M. Schirmböck;M. Lorito;Yong-Li Wang;C. K. Hayes

  • Concepts and Technologies of Selected Seed Treatments

    and A G Taylor;G E Harman

  • Multifunctional fungal plant symbionts: new tools to enhance plant growth and productivity.

    Gary E. Harman

  • Purification, characterization, and synergistic activity of a glucan 1,3-beta-glucosidase and an N-acetyl-beta-glucosaminidase from Trichoderma harzianum.

    Lorito M;Hayes Ck;Di Pietro A;Woo Sl

  • The Molecular Basis of Shoot Responses of Maize Seedlings to Trichoderma harzianum T22 Inoculation of the Root: A Proteomic Approach

    Michal Shoresh;Gary E. Harman

  • Expression of Endochitinase from Trichoderma harzianum in Transgenic Apple Increases Resistance to Apple Scab and Reduces Vigor.

    Jyothi Prakash Bolar;John L. Norelli;Kwai-Weng Wong;Christopher K. Hayes

  • Synergistic interaction between fungal cell wall degrading enzymes and different antifungal compounds enhances inhibition of spore germination

    Matteo Lorito;Clemens Peterbauer;Christopher K. Hayes;Gary E. Harman

  • Trichoderma and Gliocladium. Volume 2: Enzymes, biological control and commercial applications

    Gary E. Harman;Christian P. Kubicek

  • Interactions Between Trichoderma harzianum Strain T22 and Maize Inbred Line Mo17 and Effects of These Interactions on Diseases Caused by Pythium ultimum and Colletotrichum graminicola

    Gary E. Harman;Rixana Petzoldt;Alfio Comis;Jie Chen

  • Combining effective strains of Trichoderma harzianum and solid matrix priming to improve biological seed treatments

    G. E Harman;A. G Taylor;T. E Stasz

  • Synergistic interaction between cell wall degrading enzymes and membrane affecting compounds

    M. Lorito;S. L. Woo;M. D'ambrosio;G. E. Harman

  • Synergistic activity of endochitinase and exochitinase from Trichoderma atroviride (T. harzianum) against the pathogenic fungus (Venturia inaequalis) in transgenic apple plants

    Jyothi Prakash Bolar;John L. Norelli;Gary E. Harman;Susan K. Brown

  • Growth Enhancement of shrunken-2 (sh2) Sweet Corn by Trichoderma harzianum 1295-22: Effect of Environmental Stress

    Thomas Björkman;Lisa M. Blanchard;Gary E. Harman

Frequent Co-Authors

Matteo Lorito
Matteo Lorito University of Naples Federico II
Sheridan L. Woo
Sheridan L. Woo University of Naples Federico II
Alan G. Taylor
Alan G. Taylor Cornell University
Antonio Di Pietro
Antonio Di Pietro University of Córdoba
Felice Scala
Felice Scala University of Naples Federico II
Herb S. Aldwinckle
Herb S. Aldwinckle Cornell University
Eric B. Nelson
Eric B. Nelson Cornell University
Ilan Chet
Ilan Chet Hebrew University of Jerusalem
John L. Norelli
John L. Norelli United States Department of Agriculture

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