World's Best Scientists 2026 revealed!

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Plant Science and Agronomy 48 2404 2221 603 532 366 8897

Steven T. Koike publications per year

The chart shows the history of publications by Steven T. Koike between 1987 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Steven T. Koike published across 39 years, from 1987 to 2025, averaging 9.7 papers a year. Output peaked at 33 publications in 2009. 8 of the 379 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1987 to 2025. Vertical axis: number of publications, 0 to 33. Peak 33 publications in 2009. 1987: 1 publication 1988: 2 publications 1989: 0 publications 1990: 2 publications 1991: 4 publications 1992: 2 publications 1993: 5 publications 1994: 9 publications 1995: 8 publications 1996: 11 publications 1997: 12 publications 1998: 14 publications 1999: 12 publications 2000: 12 publications 2001: 20 publications 2002: 11 publications 2003: 22 publications 2004: 12 publications 2005: 11 publications 2006: 19 publications 2007: 11 publications 2008: 12 publications 2009: 33 publications 2010: 11 publications 2011: 20 publications 2012: 13 publications 2013: 6 publications 2014: 9 publications 2015: 13 publications 2016: 16 publications 2017: 14 publications 2018: 5 publications 2019: 4 publications 2020: 6 publications 2021: 6 publications 2022: 1 publication 2023: 2 publications 2024: 5 publications 2025: 3 publications
1987 2025

379 publications in total across all disciplines

View publications per year as a table
Steven T. Koike: publications per year, 1987 to 2025
Year Publications
1987 1
1988 2
1989 0
1990 2
1991 4
1992 2
1993 5
1994 9
1995 8
1996 11
1997 12
1998 14
1999 12
2000 12
2001 20
2002 11
2003 22
2004 12
2005 11
2006 19
2007 11
2008 12
2009 33
2010 11
2011 20
2012 13
2013 6
2014 9
2015 13
2016 16
2017 14
2018 5
2019 4
2020 6
2021 6
2022 1
2023 2
2024 5
2025 3
Total 379
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Steven T. Koike publications per year - data summary

  • Steven T. Koike, a Plant Science and Agronomy scholar from University of California, Berkeley, has 379 publications recorded across 39 years, from 1987 to 2025.
  • The oldest publication on record dates to 1987 and the most recent to 2025.
  • The most productive year is 2009, with 33 publications.
  • The least productive years with any output are 1987 and 2022, with 1 publication each.
  • 1 of the 39 years in the span carries no publications at all (1989).
  • The rate of publication averages 9.7 papers per year over the whole span, or 10.0 per year counting only the 38 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 17 publications, 4% of the career total.
  • Split into equal eras - 1987-1999: 82 publications (6.3 per year); 2000-2012: 207 publications (15.9 per year); 2013-2025: 90 publications (6.9 per year).
  • Comparing the opening and closing eras, the overall trend of publication is broadly steady.

Steven T. Koike 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 Steven T. Koike 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, 366–370 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: 366 publications — 96th percentile

96% 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
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 11 366
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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Steven T. Koike publication distribution in Plant Science and Agronomy in 2026 - data summary

  • The chart plots the publication count of all 6,494 Plant Science and Agronomy scientists ranked by Research.com in 2026, grouped into 88 ranges running from 36–40 to 467+ publications.
  • Steven T. Koike, a Plant Science and Agronomy scholar from University of California, Berkeley, records 366 publications - the 96th percentile of the discipline.
  • 96% of ranked Plant Science and Agronomy scientists score the same or lower than Steven T. Koike, and about 4% score higher.
  • The median of the discipline falls in the 136–140 publications range, and Steven T. Koike ranks above the median.
  • The most crowded range is 111–115 publications, holding 255 scientists (4% of the field).
  • 55% of the field sits in the lowest quarter of the value range (up to 141–145 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 467 publications or more, 99 scientists in all (2% of the field).

Steven T. Koike 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 Steven T. Koike 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, 48 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: 48 D-Index — 64th percentile

64% 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 48
49 127
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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Steven T. Koike D-index placement in Plant Science and Agronomy in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 6,494 Plant Science and Agronomy scientists ranked by Research.com in 2026, grouped into 80 ranges running from 30 to 109+ D-Index.
  • Steven T. Koike, a Plant Science and Agronomy scholar from University of California, Berkeley, records 48 D-Index - the 64th percentile of the discipline.
  • 64% of ranked Plant Science and Agronomy scientists score the same or lower than Steven T. Koike, and about 36% score higher.
  • The median of the discipline falls in the 43 D-Index range, and Steven T. Koike ranks above the median.
  • The most crowded range is 34 D-Index, holding 288 scientists (4% of the field).
  • 66% of the field sits in the lowest quarter of the value range (up to 49 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 109 D-Index or more, 99 scientists in all (2% of the field).

Overview

What is he best known for?

The fields of study he is best known for:

  • Botany
  • Horticulture
  • Ecology

The scientist’s investigation covers issues in Agronomy, Horticulture, Verticillium dahliae, Botany and Crop. His study explores the link between Agronomy and topics such as Inoculation that cross with problems in Summer fallow and Field experiment. His Verticillium dahliae study integrates concerns from other disciplines, such as Chloropicrin, Fungi imperfecti, Verticillium wilt and Verticillium.

Steven T. Koike has included themes like Bacterial blight, Host and Sudden death in his Botany study. His Crop study combines topics in areas such as Broccoli raab, Asparagus, Apiaceae and Cultural control. His research integrates issues of Potting soil and Spinach in his study of Sowing.

His most cited work include:

  • Phytophthora ramorum as the Cause of Extensive Mortality of Quercus spp. and Lithocarpus densiflorus in California. (508 citations)
  • Winter cover crops in a vegetable cropping system: Impacts on nitrate leaching, soil water, crop yield, pests and management costs (178 citations)
  • Effects of Crop Rotation and Irrigation on Verticillium dahliae Microsclerotia in Soil and Wilt in Cauliflower. (101 citations)

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

Steven T. Koike mostly deals with Botany, Horticulture, Agronomy, Inoculation and Conidium. His study looks at the relationship between Botany and fields such as Pseudomonas syringae, as well as how they intersect with chemical problems. His Horticulture research is multidisciplinary, incorporating elements of Pathogenicity and Spinach.

In his study, which falls under the umbrella issue of Spinach, Pathogen and Oomycete is strongly linked to Downy mildew. Crop, Verticillium dahliae, Verticillium wilt, Cultural control and Cover crop are the subjects of his Agronomy studies. The Conidium study combines topics in areas such as Potato dextrose agar and Spore.

He most often published in these fields:

  • Botany (50.61%)
  • Horticulture (39.26%)
  • Agronomy (27.91%)

What were the highlights of his more recent work (between 2012-2021)?

  • Horticulture (39.26%)
  • Botany (50.61%)
  • Agronomy (27.91%)

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

His scientific interests lie mostly in Horticulture, Botany, Agronomy, Spinach and Cultivar. In his work, Rhizoctonia solani, Sclerotinia, Sclerotinia minor and Fusarium avenaceum is strongly intertwined with Crown, which is a subfield of Horticulture. His Botany study combines topics from a wide range of disciplines, such as Pathogenicity, Pseudomonas syringae and Ribosomal DNA.

Steven T. Koike combines subjects such as Soil water and Fusarium oxysporum with his study of Agronomy. Steven T. Koike works mostly in the field of Spinach, limiting it down to topics relating to Downy mildew and, in certain cases, Oomycete, Pathogen and Oospore. Within one scientific family, Steven T. Koike focuses on topics pertaining to Plant disease resistance under Cultivar, and may sometimes address concerns connected to Fusarium wilt and Germplasm.

Between 2012 and 2021, his most popular works were:

  • Management of Fusarium wilt of strawberry (34 citations)
  • Anaerobic soil disinfestation is an alternative to soil fumigation for control of some soilborne pathogens in strawberry production (32 citations)
  • Practical Benefits of Knowing the Enemy: Modern Molecular Tools for Diagnosing the Etiology of Bacterial Diseases and Understanding the Taxonomy and Diversity of Plant-Pathogenic Bacteria (32 citations)

Best Publications

  • Phytophthora ramorum as the Cause of Extensive Mortality of Quercus spp. and Lithocarpus densiflorus in California.

    D. M. Rizzo;M. Garbelotto;J. M. Davidson;G. W. Slaughter

  • Winter cover crops in a vegetable cropping system: Impacts on nitrate leaching, soil water, crop yield, pests and management costs

    L.J. Wyland;L.E. Jackson;W.E. Chaney;K. Klonsky

  • Development of an assay for rapid detection and quantification of Verticillium dahliae in soil.

    Guillaume J. Bilodeau;Steven T. Koike;Pedro Uribe;Frank N. Martin

  • Evaluation of Broccoli Residue Incorporation into Field Soil for Verticillium Wilt Control in Cauliflower

    Krishna V Subbarao;Judith C Hubbard;Steven T Koike

  • Effects of Crop Rotation and Irrigation on Verticillium dahliae Microsclerotia in Soil and Wilt in Cauliflower.

    C L Xiao;K V Subbarao;K F Schulbach;S T Koike

  • Economically Important Diseases of Spinach

    J. C. Correll;T. E. Morelock;M. C. Black;S. T. Koike

  • Vegetable Diseases: A Colour Handbook

    Steven T. Koike;Peter Gladders;Albert O. Paulus

  • Verticillium wilt of cauliflower in California

    S. T. Koike;K. V. Subbarao;R. M. Davis;T. R. Gordon

  • Characterization of Verticillium dahliae Isolates and Wilt Epidemics of Pepper

    R. G. Bhat;R. F. Smith;S. T. Koike;B. M. Wu

  • Non-oak native plants are main hosts for sudden oak death pathogen in California

    Matteo Garbelotto;Jennifer M. Davidson;Kelly Ivors;Patricia E. Maloney

  • On-farm assessment of organic matter and tillage management on vegetable yield, soil, weeds, pests, and economics in California

    L.E Jackson;I Ramirez;R Yokota;S.A Fennimore

  • Management of soilborne diseases in strawberry using vegetable rotations

    K. V. Subbarao;Z. Kabir;F. N. Martin;S. T. Koike

  • Genetic relationships and cross pathogenicities of Verticillium dahliae isolates from cauliflower and other crops.

    K. V. Subbarao;A. Chassot;T. R. Gordon;J. C. Hubbard

  • Fate of Escherichia coli O157:H7 in field-inoculated lettuce

    Anne-laure Moyne;Mysore R. Sudarshana;Tyann Blessington;Steven T. Koike

  • Anaerobic soil disinfestation is an alternative to soil fumigation for control of some soilborne pathogens in strawberry production

    C. Shennan;J. Muramoto;S. Koike;G. Baird

  • Multilocus Sequence Typing of Pseudomonas syringae Sensu Lato Confirms Previously Described Genomospecies and Permits Rapid Identification of P. syringae pv. coriandricola and P. syringae pv. apii Causing Bacterial Leaf Spot on Parsley

    Carolee T. Bull;Christopher R. Clarke;Rongman Cai;Boris A. Vinatzer

  • Spinach: better management of downy mildew and white rust through genomics

    J. C. Correll;B. H. Bluhm;C. Feng;K. Lamour

  • Management of Fusarium wilt of strawberry

    Steven T. Koike;Thomas R. Gordon

  • Insensitivity to the Fungicide Fosetyl-Aluminum in California Isolates of the Lettuce Downy Mildew Pathogen, Bremia lactucae.

    Sarah Brown;Steven T Koike;Oswaldo E Ochoa;Frank Laemmlen

  • Effect of Temperature on Severity of Fusarium Wilt of Lettuce Caused by Fusarium oxysporum f. sp. lactucae.

    J. C. Scott;T. R. Gordon;D. V. Shaw;S. T. Koike

  • Population analyses of the vascular plant pathogen Verticillium dahliae detect recombination and transcontinental gene flow

    Zahi K. Atallah;Karunakaran Maruthachalam;Lindsey du Toit;Steven T. Koike

  • Transition to large-scale organic vegetable production in the Salinas Valley, California

    S.M. Smukler;L.E. Jackson;L. Murphree;R. Yokota

  • Crown Rot of Strawberry Caused by Macrophomina phaseolina in California

    S. T. Koike

  • Spinach Production in California

    Steven T Koike;Michael Cahn;Marita Cantwell;Steve Fennimore

  • Verticillium wilt of cauliflower in California

    S. T. Koike;K. V. Subbarao;R. M. Davis;T. R. Gordon

  • Non-oak native plants are main hosts for sudden oak death pathogen in California - eScholarship

    Matteo Garbelotto;Jennifer M. Davidson;Kelly Ivors;Patricia E. Maloney

Frequent Co-Authors

Krishna V. Subbarao
Krishna V. Subbarao University of California, Davis
Thomas R. Gordon
Thomas R. Gordon University of California, Davis
Frank N. Martin
Frank N. Martin United States Department of Agriculture
James C. Correll
James C. Correll University of Arkansas at Fayetteville
Louise E. Jackson
Louise E. Jackson University of California, Davis
Robert L. Gilbertson
Robert L. Gilbertson University of California, Davis
Steven J. Klosterman
Steven J. Klosterman Agricultural Research Service
Carol Shennan
Carol Shennan University of California, Santa Cruz
Matteo Garbelotto
Matteo Garbelotto University of California, Berkeley
Walter D. Gubler
Walter D. Gubler University of California, Davis

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