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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 40 3906 3656 974 874 130 6560

William J. Manning publications per year

The chart shows the history of publications by William J. Manning between 1967 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. William J. Manning published across 59 years, from 1967 to 2025, averaging 2.7 papers a year. Output peaked at 11 publications in 2020. 7 of the 162 publications appeared in the last two years.

No. of publications
2 4 6 8 10
Bar chart. Horizontal axis: year, 1967 to 2025. Vertical axis: number of publications, 0 to 11. Peak 11 publications in 2020. 1967: 1 publication 1968: 0 publications 1969: 1 publication 1970: 4 publications 1971: 3 publications 1972: 1 publication 1973: 4 publications 1974: 2 publications 1975: 1 publication 1976: 1 publication 1977: 0 publications 1978: 0 publications 1979: 2 publications 1980: 1 publication 1981: 1 publication 1982: 2 publications 1983: 1 publication 1984: 0 publications 1985: 1 publication 1986: 0 publications 1987: 4 publications 1988: 5 publications 1989: 1 publication 1990: 1 publication 1991: 1 publication 1992: 3 publications 1993: 7 publications 1994: 0 publications 1995: 7 publications 1996: 1 publication 1997: 1 publication 1998: 4 publications 1999: 1 publication 2000: 0 publications 2001: 4 publications 2002: 10 publications 2003: 3 publications 2004: 3 publications 2005: 5 publications 2006: 4 publications 2007: 9 publications 2008: 5 publications 2009: 5 publications 2010: 1 publication 2011: 3 publications 2012: 0 publications 2013: 2 publications 2014: 4 publications 2015: 3 publications 2016: 6 publications 2017: 1 publication 2018: 4 publications 2019: 3 publications 2020: 11 publications 2021: 1 publication 2022: 3 publications 2023: 3 publications 2024: 4 publications 2025: 3 publications
1967 2025

162 publications in total across all disciplines

View publications per year as a table
William J. Manning: publications per year, 1967 to 2025
Year Publications
1967 1
1968 0
1969 1
1970 4
1971 3
1972 1
1973 4
1974 2
1975 1
1976 1
1977 0
1978 0
1979 2
1980 1
1981 1
1982 2
1983 1
1984 0
1985 1
1986 0
1987 4
1988 5
1989 1
1990 1
1991 1
1992 3
1993 7
1994 0
1995 7
1996 1
1997 1
1998 4
1999 1
2000 0
2001 4
2002 10
2003 3
2004 3
2005 5
2006 4
2007 9
2008 5
2009 5
2010 1
2011 3
2012 0
2013 2
2014 4
2015 3
2016 6
2017 1
2018 4
2019 3
2020 11
2021 1
2022 3
2023 3
2024 4
2025 3
Total 162
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William J. Manning 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 William J. Manning 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, 126–130 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: 130 publications — 47th percentile

47% 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
126–130 219 130
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
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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William J. Manning 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 William J. Manning 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, 40 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: 40 D-Index — 42nd percentile

42% 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 40
41 230
42 228
43 219
44 193
45 164
46 158
47 143
48 131
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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Overview

What is he best known for?

The fields of study he is best known for:

  • Ecology
  • Botany
  • Ecosystem

His scientific interests lie mostly in Ozone, Botany, Agronomy, Pollutant and Ambient ozone. His study in the field of Tropospheric ozone also crosses realms of Monitoring data. William J. Manning combines subjects such as Carbon dioxide and Horticulture with his study of Botany.

His study on Cultivar is often connected to Centaurea nigra and Native plant as part of broader study in Agronomy. His Pollutant research includes themes of Air pollution and Atmosphere. His Air pollution research integrates issues from Meteorology and Environmental protection.

His most cited work include:

  • Atmospheric ozone: Formation and effects on vegetation (347 citations)
  • The impact of ozone on assimilate partitioning in plants: A review (318 citations)
  • Climate change: potential effects of increased atmospheric carbon dioxide (CO2), ozone (O3), and ultraviolet-B (UV-B) radiation on plant diseases. (289 citations)

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

The scientist’s investigation covers issues in Ozone, Botany, Horticulture, Agronomy and Cultivar. His work deals with themes such as Environmental chemistry, Air pollution and Vegetation, which intersect with Ozone. His study on Air pollution also encompasses disciplines like

  • Pollutant together with Atmosphere,
  • Air quality index that intertwine with fields like Ecosystem and Environmental protection.

William J. Manning usually deals with Botany and limits it to topics linked to Ethylene diurea and Antiozonant and Biomonitoring. His Horticulture research is multidisciplinary, incorporating perspectives in Photosynthesis and Growing season. His Cultivar research is multidisciplinary, relying on both Botrytis cinerea, Plant growth and Yield.

He most often published in these fields:

  • Ozone (46.28%)
  • Botany (37.19%)
  • Horticulture (33.06%)

What were the highlights of his more recent work (between 2013-2020)?

  • Horticulture (33.06%)
  • Ozone (46.28%)
  • Photosynthesis (10.74%)

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

His primary areas of study are Horticulture, Ozone, Photosynthesis, Botany and Growing season. His work on Red maple as part of general Horticulture research is frequently linked to Resorption, thereby connecting diverse disciplines of science. His Ozone study integrates concerns from other disciplines, such as Mode of action and Stomatal conductance.

His biological study spans a wide range of topics, including Biomass, Maple and Chlorophyll a. His work focuses on many connections between Botany and other disciplines, such as Ethylene diurea, that overlap with his field of interest in Nitrogen fertilizer and Environmental chemistry. As a member of one scientific family, William J. Manning mostly works in the field of Growing season, focusing on Abscission and, on occasion, Plant physiology and Fumigation.

Between 2013 and 2020, his most popular works were:

  • Ozone levels in European and USA cities are increasing more than at rural sites, while peak values are decreasing. (137 citations)
  • Projected Carbon Dioxide to Increase Grass Pollen and Allergen Exposure Despite Higher Ozone Levels (62 citations)
  • Assessing the effects of ambient ozone in China on snap bean genotypes by using ethylenediurea (EDU). (40 citations)

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

  • Ecology
  • Botany
  • Ecosystem

William J. Manning mainly investigates Botany, Ozone, Stomatal conductance, Tropospheric ozone and Agronomy. His study in Botany is interdisciplinary in nature, drawing from both Ethylene diurea, Carbon dioxide and Animal science. His Stomatal conductance study often links to related topics such as Horticulture.

The Tropospheric ozone study combines topics in areas such as Vegetation, Air quality index and Environmental protection. His work on Plant breeding, Panicle, Fumigation and Growing season as part of general Agronomy study is frequently connected to Oryza, therefore bridging the gap between diverse disciplines of science and establishing a new relationship between them. His Growing season research incorporates elements of Photosynthesis and Phaseolus.

Best Publications

  • Atmospheric ozone: Formation and effects on vegetation

    Sagar V Krupa;William J Manning

  • Climate change: potential effects of increased atmospheric carbon dioxide (CO2), ozone (O3), and ultraviolet-B (UV-B) radiation on plant diseases.

    William J. Manning;Andreas v. Tiedemann

  • The impact of ozone on assimilate partitioning in plants: A review

    Daniel R. Cooley;William J. Manning

  • The Ozone Component of Global Change: Potential Effects on Agricultural and Horticultural Plant Yield, Product Quality and Interactions with Invasive Species

    Fitzgerald Booker;Russell Muntifering;Margaret McGrath;Kent Burkey

  • Ground-level ozone in China: distribution and effects on crop yields.

    Xiaoke Wang;William Manning;Zongwei Feng;Yongguan Zhu

  • Ozone levels in European and USA cities are increasing more than at rural sites, while peak values are decreasing.

    Elena Paoletti;Alessandra De Marco;David C.S. Beddows;Roy M. Harrison

  • Toward a biologically significant and usable standard for ozone that will also protect plants

    Elena Paoletti;William J. Manning

  • Projected Carbon Dioxide to Increase Grass Pollen and Allergen Exposure Despite Higher Ozone Levels

    Jennifer M. Albertine;William J. Manning;Michelle DaCosta;Kristina A. Stinson

  • Ethylenediurea (EDU): a research tool for assessment and verification of the effects of ground level ozone on plants under natural conditions.

    William J. Manning;Elena Paoletti;Heinrich Sandermann;Dieter Ernst

  • Establishing a cause and effect relationship for ambient ozone exposure and tree growth in the forest: progress and an experimental approach.

    William J. Manning

  • Assessing the impact of ambient ozone on growth and productivity of two cultivars of wheat in India using three rates of application of ethylenediurea (EDU).

    Supriya Tiwari;Madhoolika Agrawal;William J. Manning

  • Ambient ozone (O3) and adverse crop response: a unified view of cause and effect.

    S.V. Krupa;L. Grünhage;H.-J. Jäger;M. Nosal

  • Distribution of ozone and other air pollutants in forests of the Carpathian Mountains in central Europe.

    A Bytnerowicz;B Godzik;W Frączek;K Grodzińska

  • Potential bioindicator plant species for ambient ozone in forested mountain areas of central Europe.

    W.J. Manning;B. Godzik;R. Musselman

  • Assessing the impact of ambient ozone on growth and yield of a rice (Oryza sativa L.) and a wheat (Triticum aestivum L.) cultivar grown in the Yangtze Delta, China, using three rates of application of ethylenediurea (EDU)

    Xiaoke Wang;Qiwei Zheng;Fangfang Yao;Zhan Chen

  • Ambient ozone in forests of the Central and Eastern European mountains.

    A. Bytnerowicz;B. Godzik;K. Grodzińska;W. Fra̧czek

  • Diagnosing ozone stress and differential tolerance in rice (Oryza sativa L.) with ethylenediurea (EDU).

    Md. Ashrafuzzaman;Md. Ashrafuzzaman;Farzana Afrose Lubna;Felix Holtkamp;William J. Manning

  • Effects of limestone dust on leaf condition, foliar disease incidence, and leaf surface microflora of native plants

    William J. Manning

  • Use of the antiozonant ethylenediurea (EDU) in Italy: Verification of the effects of ambient ozone on crop plants and trees and investigation of EDU's mode of action

    Elena Paoletti;Nicla Contran;William J. Manning;Anna M. Ferrara

  • Bioindicator plants for ambient ozone in Central and Eastern Europe.

    W.J Manning;B Godzik

  • Detecting ozone and demonstrating its phytotoxicity in forested areas of Poland: a pilot study.

    A. Bytnerowicz;W.J. Manning;D. Grosjean;W. Chmielewski

Frequent Co-Authors

Elena Paoletti
Elena Paoletti National Research Council (CNR)
Xiaoke Wang
Xiaoke Wang Chinese Academy of Sciences
Andrzej Bytnerowicz
Andrzej Bytnerowicz US Forest Service
Sagar V. Krupa
Sagar V. Krupa University of Minnesota
Zhaozhong Feng
Zhaozhong Feng Nanjing University of Information Science and Technology
Takayoshi Koike
Takayoshi Koike Hokkaido University
Mitsutoshi Kitao
Mitsutoshi Kitao Forestry and Forest Products Research Institute
Antonella Castagna
Antonella Castagna University of Pisa
Annamaria Ranieri
Annamaria Ranieri University of Pisa
Yong-Guan Zhu
Yong-Guan Zhu Chinese Academy of Sciences

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