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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Plant Science and Agronomy 49 2277 2100 573 503 178 8753

Graham P. Head publications per year

The chart shows the history of publications by Graham P. Head between 1987 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Graham P. Head published across 39 years, from 1987 to 2025, averaging 5.4 papers a year. Output peaked at 19 publications in 2021. 16 of the 209 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1987 to 2025. Vertical axis: number of publications, 0 to 19. Peak 19 publications in 2021. 1987: 1 publication 1988: 0 publications 1989: 0 publications 1990: 0 publications 1991: 0 publications 1992: 1 publication 1993: 1 publication 1994: 0 publications 1995: 5 publications 1996: 0 publications 1997: 0 publications 1998: 2 publications 1999: 3 publications 2000: 0 publications 2001: 3 publications 2002: 5 publications 2003: 0 publications 2004: 3 publications 2005: 12 publications 2006: 5 publications 2007: 6 publications 2008: 3 publications 2009: 9 publications 2010: 4 publications 2011: 5 publications 2012: 6 publications 2013: 7 publications 2014: 8 publications 2015: 4 publications 2016: 16 publications 2017: 9 publications 2018: 5 publications 2019: 9 publications 2020: 13 publications 2021: 19 publications 2022: 14 publications 2023: 15 publications 2024: 10 publications 2025: 6 publications
1987 2025

209 publications in total across all disciplines

View publications per year as a table
Graham P. Head: publications per year, 1987 to 2025
Year Publications
1987 1
1988 0
1989 0
1990 0
1991 0
1992 1
1993 1
1994 0
1995 5
1996 0
1997 0
1998 2
1999 3
2000 0
2001 3
2002 5
2003 0
2004 3
2005 12
2006 5
2007 6
2008 3
2009 9
2010 4
2011 5
2012 6
2013 7
2014 8
2015 4
2016 16
2017 9
2018 5
2019 9
2020 13
2021 19
2022 14
2023 15
2024 10
2025 6
Total 209
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Graham P. Head 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 Graham P. Head sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 88 bars. Horizontal axis: publications, 36–40 to 467+. Vertical axis: number of scientists, 0 to 255. Most scientists, 255, have 111–115 publications. The last bar groups every scientist with 467 publications or more. The highlighted bar, 176–180 publications, is where this scientist sits. 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
36–40 publications 467+

This scientist: 178 publications — 70th percentile

70% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Plant Science and Agronomy scientists by publication count, Research.com 2026 ranking edition. Based on 6,494 ranked scientists.
Publications Scientists This scientist
36–40 2
41–45 7
46–50 40
51–55 58
56–60 60
61–65 107
66–70 130
71–75 153
76–80 191
81–85 199
86–90 206
91–95 218
96–100 226
101–105 227
106–110 247
111–115 255
116–120 253
121–125 233
126–130 219
131–135 201
136–140 194
141–145 176
146–150 157
151–155 147
156–160 151
161–165 159
166–170 137
171–175 128
176–180 126 178
181–185 98
186–190 114
191–195 100
196–200 90
201–205 71
206–210 98
211–215 70
216–220 86
221–225 61
226–230 58
231–235 53
236–240 64
241–245 39
246–250 46
251–255 51
256–260 36
261–265 44
266–270 35
271–275 30
276–280 33
281–285 35
286–290 36
291–295 26
296–300 26
301–305 31
306–310 30
311–315 21
316–320 29
321–325 14
326–330 15
331–335 15
336–340 17
341–345 15
346–350 12
351–355 17
356–360 18
361–365 12
366–370 11
371–375 6
376–380 6
381–385 11
386–390 9
391–395 10
396–400 8
401–405 4
406–410 9
411–415 11
416–420 4
421–425 7
426–430 4
431–435 3
436–440 5
441–445 8
446–450 6
451–455 7
456–460 5
461–465 6
466 2
467+ 99
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Graham P. Head 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 Graham P. Head sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 80 bars. Horizontal axis: D-Index, 30 to 109+. Vertical axis: number of scientists, 0 to 288. Most scientists, 288, have 34 D-Index. The last bar groups every scientist with 109 D-Index or more. The highlighted bar, 49 D-Index, is where this scientist sits. 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.

View D-Index distribution as a table
Number of Plant Science and Agronomy scientists by D-index, Research.com 2026 ranking edition. Based on 6,494 ranked scientists.
D-Index Scientists This scientist
30 200
31 236
32 253
33 283
34 288
35 240
36 246
37 243
38 247
39 229
40 232
41 230
42 228
43 219
44 193
45 164
46 158
47 143
48 131
49 127 49
50 122
51 122
52 110
53 102
54 98
55 79
56 85
57 88
58 91
59 62
60 61
61 59
62 54
63 61
64 59
65 58
66 41
67 49
68 39
69 32
70 40
71 47
72 38
73 28
74 29
75 28
76 22
77 21
78 25
79 26
80 19
81 16
82 12
83 16
84 14
85 11
86 17
87 13
88 10
89 12
90 18
91 16
92 16
93 17
94 12
95 8
96 9
97 9
98 11
99 12
100 5
101 8
102 4
103 11
104 5
105 9
106 7
107 4
108 8
109+ 99
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Overview

What is he best known for?

The fields of study he is best known for:

  • Ecology
  • Agronomy
  • Agriculture

Graham P. Head mainly focuses on Agronomy, Bacillus thuringiensis, Larva, Cry3Bb1 and PEST analysis. Agronomy is frequently linked to Genetically modified crops in his study. His study looks at the relationship between Genetically modified crops and topics such as Biotechnology, which overlap with Plant disease resistance and Sowing.

Bacillus thuringiensis is intertwined with Fall armyworm, Bioassay and Bt cotton in his study. His research in Bioassay focuses on subjects like Horticulture, which are connected to Cry1Ac, Botany, Transgene, Pink bollworm and Toxin. His biological study spans a wide range of topics, including Western corn rootworm, MON 863 and Diabrotica.

His most cited work include:

  • Cry1F Resistance in Fall Armyworm Spodoptera frugiperda: Single Gene versus Pyramided Bt Maize (165 citations)
  • Major heretofore intractable biotic constraints to African food security that may be amenable to novel biotechnological solutions (161 citations)
  • Cry1Ab protein levels in phytophagous insects feeding on transgenic corn: implications for secondary exposure risk assessment (143 citations)

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

His primary areas of study are Bacillus thuringiensis, Agronomy, Genetically modified maize, Larva and PEST analysis. In his papers, Graham P. Head integrates diverse fields, such as Bacillus thuringiensis, Cry1Ac, Lepidoptera genitalia, Genetically modified crops, Fall armyworm and Veterinary medicine. Graham P. Head has included themes like Cry3Bb1, Helicoverpa zea and SmartStax in his Agronomy study.

The concepts of his Genetically modified maize study are interwoven with issues in Hybrid and Diatraea saccharalis. His research in Larva intersects with topics in Genotype, Insect, Bioassay and Horticulture. His studies deal with areas such as Pest control and Sowing as well as PEST analysis.

He most often published in these fields:

  • Bacillus thuringiensis (51.91%)
  • Agronomy (48.09%)
  • Genetically modified maize (29.77%)

What were the highlights of his more recent work (between 2018-2021)?

  • Bacillus thuringiensis (51.91%)
  • PEST analysis (26.72%)
  • Genetically modified maize (29.77%)

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

His primary areas of investigation include Bacillus thuringiensis, PEST analysis, Genetically modified maize, Crop and Horticulture. His studies in PEST analysis integrate themes in fields like Pest control, Genotype and Fecundity. His Genetically modified maize research incorporates themes from Bioassay and Agronomy, Resistance.

His work focuses on many connections between Agronomy and other disciplines, such as Helicoverpa zea, that overlap with his field of interest in Insect. His Horticulture study combines topics in areas such as Transgene, Lepidoptera genitalia and Larva. His work carried out in the field of Cry1Ac brings together such families of science as Helicoverpa armigera and Bt cotton.

Between 2018 and 2021, his most popular works were:

  • Field-evolved resistance of Helicoverpa zea (Boddie) to transgenic maize expressing pyramided Cry1A.105/Cry2Ab2 proteins in northeast Louisiana, the United States. (33 citations)
  • Genetically Engineered Crops: Importance of Diversified Integrated Pest Management for Agricultural Sustainability. (26 citations)
  • Bacillus thuringiensis Cry1Da_7 and Cry1B.868 Protein Interactions with Novel Receptors Allow Control of Resistant Fall Armyworms, Spodoptera frugiperda (J.E. Smith). (25 citations)

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

  • Ecology
  • Agriculture
  • Agronomy

His main research concerns Bacillus thuringiensis, PEST analysis, Genetically modified maize, Fall armyworm and Bioassay. You can notice a mix of various disciplines of study, such as Genetically modified crops, Pupa, Environmental planning and Integrated pest management, in his Bacillus thuringiensis studies. His study explores the link between PEST analysis and topics such as Insect that cross with problems in Midgut, Receptor and Biochemistry.

His Genetically modified maize research includes themes of Helicoverpa zea, Larva and Agronomy. His Agronomy and Sowing and Resistance investigations all form part of his Agronomy research activities. His study looks at the relationship between Bioassay and fields such as Horticulture, as well as how they intersect with chemical problems.

Best Publications

  • Cry1F Resistance in Fall Armyworm Spodoptera frugiperda: Single Gene versus Pyramided Bt Maize

    Fangneng Huang;Jawwad A. Qureshi;Robert L. Meagher;Dominic D. Reisig

  • Field-evolved resistance to Cry1Ab maize by Spodoptera frugiperda in Brazil

    Celso Omoto;Oderlei Bernardi;Eloisa Salmeron;Rodrigo J Sorgatto

  • Major heretofore intractable biotic constraints to African food security that may be amenable to novel biotechnological solutions

    J Gressel;A Hanafi;G Head;W Marasas

  • Evaluation of SmartStax and SmartStax PRO maize against western corn rootworm and northern corn rootworm: efficacy and resistance management.

    Graham P Head;Matthew W Carroll;Sean P Evans;Dwain M Rule

  • Cry1Ab protein levels in phytophagous insects feeding on transgenic corn: implications for secondary exposure risk assessment

    Graham Head;Christopher R. Brown;Mark E. Groth;Jian J. Duan

  • No Detection of Cry1Ac Protein in Soil After Multiple Years of Transgenic Bt Cotton (Bollgard) Use

    Graham Head;James B. Surber;Jon A. Watson;John W. Martin

  • Control of Resistant Pink Bollworm (Pectinophora gossypiella) by Transgenic Cotton That Produces Bacillus thuringiensis Toxin Cry2Ab

    Bruce E. Tabashnik;Timothy J. Dennehy;Maria A. Sims;Karen Larkin

  • How Governmental Regulation Can Help or Hinder the Integration of Bt Crops within IPM Programs

    Sharlene R. Matten;Graham P. Head;Hector D. Quemada

  • Assessment of the high-dose concept and level of control provided by MON 87701 × MON 89788 soybean against Anticarsia gemmatalis and Pseudoplusia includens (Lepidoptera: Noctuidae) in Brazil.

    Oderlei Bernardi;Glaucia Sossai Malvestiti;Patrick Marques Dourado;Wladecir Salles de Oliveira

  • Cross-Resistance between Cry1 Proteins in Fall Armyworm (Spodoptera frugiperda) May Affect the Durability of Current Pyramided Bt Maize Hybrids in Brazil.

    Daniel Bernardi;Eloisa Salmeron;Renato Jun Horikoshi;Oderlei Bernardi

  • Transgenic Bt potato and conventional insecticides for Colorado potato beetle management : comparative efficacy and non-target impacts

    Gary L. Reed;Andrew S. Jensen;Jennifer Riebe;Graham Head

  • A Multiyear, Large-Scale Comparison of Arthropod Populations on Commercially Managed Bt and Non-Bt Cotton Fields

    G. Head;W. Moar;M. Eubanks;B. Freeman

  • Genetically Engineered Crops: Importance of Diversified Integrated Pest Management for Agricultural Sustainability.

    Jennifer. A. Anderson;Peter C. Ellsworth;Josias C. Faria;Graham P. Head

  • Spatial heterogeneity and insect adaptation to toxins.

    Unknown

  • Application of pyramided traits against Lepidoptera in insect resistance management for Bt crops.

    Nicholas P. Storer;Gary D. Thompson;Graham P. Head

  • Evaluation of dietary effects of transgenic corn pollen expressing Cry3Bb1 protein on a non-target ladybird beetle, Coleomegilla maculata

    Jian J. Duan;Graham Head;Michael J. McKee;Thomas E. Nickson

  • Low susceptibility of Spodoptera cosmioides, Spodoptera eridania and Spodoptera frugiperda (Lepidoptera: Noctuidae) to genetically-modified soybean expressing Cry1Ac protein

    Oderlei Bernardi;Rodrigo J. Sorgatto;Alexandre D. Barbosa;Felipe A. Domingues

  • The design and implementation of insect resistance management programs for Bt crops

    Graham P. Head;John Greenplate

  • Field Evaluation of the Impact of Corn Rootworm (Coleoptera: Chrysomelidae)–Protected Bt Corn on Ground-Dwelling Invertebrates

    Muhammad A. Bhatti;Jian Duan;Graham P. Head;Changjian Jiang

  • Soil microbial and nematode communities as affected by glyphosate and tillage practices in a glyphosate-resistant cropping system

    Konanani B. Liphadzi;Kassim Al-Khatib;Curtis N. Bensch;Phillip W. Stahlman

  • Spatial and temporal variability in host use by Helicoverpa zea as measured by analyses of stable carbon isotope ratios and gossypol residues.

    Graham Head;Ryan E. Jackson;John Adamczyk;Julius R. Bradley

  • Field-evolved resistance of Helicoverpa zea (Boddie) to transgenic maize expressing pyramided Cry1A.105/Cry2Ab2 proteins in northeast Louisiana, the United States.

    Gagandeep Kaur;Jianguo Guo;Sebe Brown;Graham P. Head

  • Susceptibility of Cry1Ab-susceptible and -resistant sugarcane borer to transgenic corn plants containing single or pyramided Bacillus thuringiensis genes ☆

    Mukti N. Ghimire;Fangneng Huang;Rogers Leonard;Graham P. Head

Frequent Co-Authors

Fangneng Huang
Fangneng Huang Louisiana State University
Bruce E. Tabashnik
Bruce E. Tabashnik University of Arizona
Yves Carrière
Yves Carrière University of Arizona
Micky D. Eubanks
Micky D. Eubanks Texas A&M University
Galen P. Dively
Galen P. Dively University of Maryland, College Park
Kassim Al-Khatib
Kassim Al-Khatib University of California, Davis
Jonathan Gressel
Jonathan Gressel Weizmann Institute of Science
Charles W. Rice
Charles W. Rice Kansas State University
Phillip W. Stahlman
Phillip W. Stahlman Kansas State University
George G. Kennedy
George G. Kennedy North Carolina State University

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