World's Best Scientists 2026 revealed!

D-Index & Metrics

Biology and Biochemistry

D-Index
49
Citations
9247
World Ranking
17994
National Ranking
1421

James P. Legg publication distribution in Biology and Biochemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Biology and Biochemistry in 2026. The highlighted bar marks where James P. Legg sits on this spectrum.

47–56 publications: 8 scientists 57–66 publications: 35 scientists 67–76 publications: 106 scientists 77–86 publications: 231 scientists 87–96 publications: 414 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 849 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 950 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 841 scientists 207–216 publications: 735 scientists 217–226 publications: 709 scientists 227–236 publications: 651 scientists 237–246 publications: 605 scientists 247–256 publications: 510 scientists 257–266 publications: 524 scientists 267–276 publications: 434 scientists 277–286 publications: 418 scientists 287–296 publications: 350 scientists 297–306 publications: 363 scientists 307–316 publications: 315 scientists 317–326 publications: 296 scientists 327–336 publications: 261 scientists 337–346 publications: 240 scientists 347–356 publications: 219 scientists 357–366 publications: 197 scientists 367–376 publications: 154 scientists 377–386 publications: 161 scientists 387–396 publications: 155 scientists 397–406 publications: 145 scientists 407–416 publications: 124 scientists 417–426 publications: 112 scientists 427–436 publications: 132 scientists 437–446 publications: 116 scientists 447–456 publications: 99 scientists 457–466 publications: 81 scientists 467–476 publications: 91 scientists 477–486 publications: 80 scientists 487–496 publications: 80 scientists 497–506 publications: 60 scientists 507–516 publications: 36 scientists 517–526 publications: 46 scientists 527–536 publications: 54 scientists 537–546 publications: 44 scientists 547–556 publications: 43 scientists 557–566 publications: 43 scientists 567–576 publications: 42 scientists 577–586 publications: 25 scientists 587–596 publications: 34 scientists 597–606 publications: 23 scientists 607–616 publications: 33 scientists 617–626 publications: 31 scientists 627–636 publications: 27 scientists 637–646 publications: 25 scientists 647–656 publications: 28 scientists 657–666 publications: 34 scientists 667–676 publications: 18 scientists 677–686 publications: 16 scientists 687–696 publications: 10 scientists 697–706 publications: 12 scientists 707–716 publications: 21 scientists 717–726 publications: 12 scientists 727–736 publications: 12 scientists 737–746 publications: 10 scientists 747–756 publications: 7 scientists 757–766 publications: 13 scientists 767–776 publications: 15 scientists 777–786 publications: 13 scientists 787–796 publications: 9 scientists 797–806 publications: 9 scientists 807–816 publications: 7 scientists 817–826 publications: 4 scientists 827–836 publications: 9 scientists 837–846 publications: 7 scientists 847–856 publications: 3 scientists 857–866 publications: 5 scientists 867–876 publications: 5 scientists 877–886 publications: 11 scientists 887–896 publications: 3 scientists 897–906 publications: 4 scientists 907–916 publications: 7 scientists 917–926 publications: 5 scientists 927–936 publications: 6 scientists 937–946 publications: 6 scientists 947–956 publications: 3 scientists 957–966 publications: 7 scientists 967–976 publications: 2 scientists 977–986 publications: 2 scientists 987–996 publications: 1 scientists 997–1,006 publications: 5 scientists 1,007–1,016 publications: 2 scientists 1,017–1,026 publications: 2 scientists 1,027 publications: 1 scientists 1,028+ publications: 100 scientists
47 publications 1,028+

This scientist: 151 publications — 27th percentile

27% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,028 publications or more.

James P. Legg D-index placement in Biology and Biochemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Biology and Biochemistry scientists ranked by Research.com in 2026. The highlighted bar marks where James P. Legg sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 317 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 900 scientists 52–53 D-Index: 1,026 scientists 54–55 D-Index: 1,150 scientists 56–57 D-Index: 1,236 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,163 scientists 62–63 D-Index: 1,131 scientists 64–65 D-Index: 1,032 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 715 scientists 72–73 D-Index: 709 scientists 74–75 D-Index: 596 scientists 76–77 D-Index: 512 scientists 78–79 D-Index: 473 scientists 80–81 D-Index: 412 scientists 82–83 D-Index: 373 scientists 84–85 D-Index: 358 scientists 86–87 D-Index: 285 scientists 88–89 D-Index: 273 scientists 90–91 D-Index: 227 scientists 92–93 D-Index: 208 scientists 94–95 D-Index: 193 scientists 96–97 D-Index: 153 scientists 98–99 D-Index: 157 scientists 100–101 D-Index: 148 scientists 102–103 D-Index: 120 scientists 104–105 D-Index: 113 scientists 106–107 D-Index: 100 scientists 108–109 D-Index: 86 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 72 scientists 114–115 D-Index: 73 scientists 116–117 D-Index: 64 scientists 118–119 D-Index: 53 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 54 scientists 124–125 D-Index: 43 scientists 126–127 D-Index: 38 scientists 128–129 D-Index: 49 scientists 130–131 D-Index: 26 scientists 132–133 D-Index: 18 scientists 134–135 D-Index: 23 scientists 136–137 D-Index: 32 scientists 138–139 D-Index: 32 scientists 140–141 D-Index: 27 scientists 142–143 D-Index: 19 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 12 scientists 148–149 D-Index: 16 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 10 scientists 154–155 D-Index: 13 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 9 scientists 162–163 D-Index: 13 scientists 164–165 D-Index: 4 scientists 166 D-Index: 4 scientists 167+ D-Index: 98 scientists
40 D-Index 167+

This scientist: 49 D-Index — 9th percentile

9% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 167 D-Index or more.

Overview

James P. Legg is affiliated with the International Institute of Tropical Agriculture in the United Kingdom. Their research primarily focuses on Agricultural and Biological Sciences, with a substantial portion dedicated to Plant Science. Other subfields include Insect Science, General Agricultural and Biological Sciences, Ecology, and Analytical Chemistry.

The scientist's work extensively covers topics such as cassava research and cyanide, plant virus research studies, insect-plant interactions and control, banana cultivation and research, nematode management and characterization studies, insect pest control strategies, and agricultural pest management studies.

James P. Legg has contributed to numerous scientific publications, with recent papers including:

  • Accuracy of a Smartphone-Based Object Detection Model, PlantVillage Nuru, in Identifying the Foliar Symptoms of the Viral Diseases of Cassava-CMD and CBSD (2020), Frontiers in Plant Science
  • Global Cropland Connectivity: A Risk Factor for Invasion and Saturation by Emerging Pathogens and Pests (2020), BioScience
  • Early detection of plant virus infection using multispectral imaging and spatial-spectral machine learning (2022), Scientific Reports
  • Genotype by environment cultivar evaluation for cassava brown streak disease resistance in Tanzania (2020), Virus Research
  • Plant pest surveillance: from satellites to molecules (2021), Emerging Topics in Life Sciences

The venues where James P. Legg frequently publishes include:

  • Insects
  • bioRxiv (Cold Spring Harbor Laboratory)
  • Plant Disease
  • Viruses
  • Crop Protection

Co-authorship is a significant aspect of their work. Frequent collaborators are:

  • Rudolph R. Shirima
  • Everlyne N. Wosula
  • Massoud Amour
  • Karen A. Garrett
  • Latifa Mrisho

The research output shows a strong emphasis on plant health, pest management, and the use of technology for early disease detection. Their studies on cassava diseases, including cassava mosaic disease (CMD) and cassava brown streak disease (CBSD), focus on both epidemiology and control measures. The exploration of spatial-spectral machine learning and object detection models highlights an interest in integrating advanced imaging and computational methods into plant pathology diagnostics.

James P. Legg's body of work integrates knowledge from multiple disciplines to address challenges in tropical agriculture, particularly in crop protection and management.

Best Publications

  • Deep Learning for Image-Based Cassava Disease Detection

    Amanda Ramcharan;Kelsee Baranowski;Peter McCloskey;Babuali Ahmed

  • Comparing the regional epidemiology of the cassava mosaic and cassava brown streak virus pandemics in Africa

    J.P. Legg;S.C. Jeremiah;H.M. Obiero;M.N. Maruthi

  • Cassava mosaic geminiviruses in Africa.

    J.P. Legg;J.P. Legg;Claude Fauquet

  • Impact of Host Plant Species and Whitefly Species on Feeding Behavior of Bemisia tabaci.

    Milan Milenovic;Everlyne Nafula Wosula;Carmelo Rapisarda;James Peter Legg

  • World Management of Geminiviruses.

    Maria R. Rojas;Monica A. Macedo;Minor R. Maliano;Maria Soto-Aguilar

  • Cassava Virus Diseases: Biology, Epidemiology, and Management

    James P Legg;P Lava Kumar;T Makeshkumar;Leena Tripathi

  • Cassava mosaic virus disease in East and Central Africa: epidemiology and management of a regional pandemic.

    J.P. Legg;B. Owor;P. Sseruwagi;J. Ndunguru

  • A global surveillance system for crop diseases

    Mónica Carvajal-Yepes;K. Cardwell;A. Nelson;K. A. Garrett

  • Emergence, spread and strategies for controlling the pandemic of cassava mosaic virus disease in east and central Africa

    J.P Legg

  • A distinct Bemisia tabaci (Gennadius) (Hemiptera: Sternorrhyncha: Aleyrodidae) genotype cluster is associated with the epidemic of severe cassava mosaic virus disease in Uganda.

    J. P. Legg;R. French;D. Rogan;G. Okao-Okuja

  • Cassava mosaic virus disease in East Africa: a dynamic disease in a changing environment.

    J.P. Legg;J.M. Thresh

  • Using Transfer Learning for Image-Based Cassava Disease Detection

    Amanda Ramcharan;Kelsee Baranowski;Peter McClowsky;Babuali Ahmed

  • Methods of surveying the incidence and severity of cassava mosaic disease and whitefly vector populations on cassava in Africa: a review

    P. Sseruwagi;W.S. Sserubombwe;J.P. Legg;J.P. Legg;J. Ndunguru

  • African cassava mosaic virus disease: the magnitude of the problem.

    J. M. Thresh;G. W. Otim-Nape;J. P. Legg;D. Fargette

  • Molecular biodiversity of cassava begomoviruses in Tanzania: evolution of cassava geminiviruses in Africa and evidence for East Africa being a center of diversity of cassava geminiviruses

    J Ndunguru;J P Legg;T A S Aveling;G Thompson

  • A Mobile-Based Deep Learning Model for Cassava Disease Diagnosis.

    Amanda Ramcharan;Peter McCloskey;Kelsee Baranowski;Neema Mbilinyi

  • Cassava brown streak disease: a threat to food security in Africa.

    Basavaprabhu L. Patil;James P. Legg;Edward Kanju;Claude M. Fauquet

  • Spatio-temporal patterns of genetic change amongst populations of cassava Bemisia tabaci whiteflies driving virus pandemics in East and Central Africa

    James P. Legg;Peter Sseruwagi;Simon Boniface;Geoffrey Okao-Okuja

  • Application of FTA technology for sampling, recovery and molecular characterization of viral pathogens and virus-derived transgenes from plant tissues.

    Joseph Ndunguru;Nigel J Taylor;Jitender Yadav;Haytham Aly

  • Biology and management of Bemisia whitefly vectors of cassava virus pandemics in Africa.

    James P Legg;Rudolph Shirima;Lensa S Tajebe;Devid Guastella

Frequent Co-Authors

Claude M. Fauquet
Claude M. Fauquet Donald Danforth Plant Science Center
Judith K. Brown
Judith K. Brown University of Arizona
Karen A. Garrett
Karen A. Garrett University of Florida
Zhangjun Fei
Zhangjun Fei Cornell University
William M. Wintermantel
William M. Wintermantel United States Department of Agriculture
Joe Tohme
Joe Tohme Centro Internacional de Agricultura Tropical
Scott Adkins
Scott Adkins United States Department of Agriculture
Robert L. Gilbertson
Robert L. Gilbertson University of California, Davis
Linda Hanley-Bowdoin
Linda Hanley-Bowdoin North Carolina State University
Roger A. C. Jones
Roger A. C. Jones University of Western Australia

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