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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 67 822 759 26 26 175 16461

Gerard L. Velthof publications per year

The chart shows the history of publications by Gerard L. Velthof between 1993 and 2021, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Gerard L. Velthof published across 29 years, from 1993 to 2021, averaging 8 papers a year. Output peaked at 18 publications in 2004. 19 of the 231 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1993 to 2021. Vertical axis: number of publications, 0 to 18. Peak 18 publications in 2004. 1993: 4 publications 1994: 1 publication 1995: 5 publications 1996: 5 publications 1997: 6 publications 1998: 4 publications 1999: 0 publications 2000: 6 publications 2001: 5 publications 2002: 3 publications 2003: 3 publications 2004: 18 publications 2005: 17 publications 2006: 10 publications 2007: 14 publications 2008: 13 publications 2009: 8 publications 2010: 12 publications 2011: 18 publications 2012: 8 publications 2013: 7 publications 2014: 7 publications 2015: 5 publications 2016: 7 publications 2017: 7 publications 2018: 10 publications 2019: 9 publications 2020: 12 publications 2021: 7 publications
1993 2021

231 publications in total across all disciplines

View publications per year as a table
Gerard L. Velthof: publications per year, 1993 to 2021
Year Publications
1993 4
1994 1
1995 5
1996 5
1997 6
1998 4
1999 0
2000 6
2001 5
2002 3
2003 3
2004 18
2005 17
2006 10
2007 14
2008 13
2009 8
2010 12
2011 18
2012 8
2013 7
2014 7
2015 5
2016 7
2017 7
2018 10
2019 9
2020 12
2021 7
Total 231
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Gerard L. Velthof 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 Gerard L. Velthof 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, 171–175 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: 175 publications — 69th percentile

69% 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
171–175 128 175
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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Gerard L. Velthof 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 Gerard L. Velthof 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, 67 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: 67 D-Index — 88th percentile

88% 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
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 67
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:

  • Agriculture
  • Ecology
  • Fertilizer

Gerard L. Velthof mainly investigates Agronomy, Nitrous oxide, Denitrification, Agriculture and Soil water. His research brings together the fields of Biofuel and Agronomy. Gerard L. Velthof interconnects Tillage, Animal waste, Greenhouse gas, Anaerobic digestion and Nitrate in the investigation of issues within Nitrous oxide.

In his study, Inorganic chemistry, Aerobic denitrification and Environmental chemistry is strongly linked to Nitrification, which falls under the umbrella field of Denitrification. The various areas that Gerard L. Velthof examines in his Agriculture study include Food chain, Food processing, Environmental impact assessment and Crop. The concepts of his Soil water study are interwoven with issues in Crop residue and Water content.

His most cited work include:

  • Role of nitrifier denitrification in the production of nitrous oxide (1281 citations)
  • Towards an agronomic assessment of N2O emissions: a case study for arable crops (499 citations)
  • Trends in Global Nitrous Oxide Emissions from Animal Production Systems (270 citations)

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

Gerard L. Velthof focuses on Agronomy, Manure, Fertilizer, Agriculture and Soil water. His research in Agronomy intersects with topics in Soil classification, Nitrous oxide, Nitrate and Leaching. His Nitrous oxide research is multidisciplinary, relying on both Grazing and Greenhouse gas.

Gerard L. Velthof has included themes like Slurry, Environmental engineering, Nutrient and Livestock in his Manure study. The Fertilizer study which covers Denitrification that intersects with Nitrification, Ammonia volatilization from urea and Environmental chemistry. His research in the fields of Nutrient management overlaps with other disciplines such as Business.

He most often published in these fields:

  • Agronomy (34.86%)
  • Manure (26.86%)
  • Fertilizer (21.14%)

What were the highlights of his more recent work (between 2017-2021)?

  • Manure (26.86%)
  • Agriculture (20.00%)
  • Fertilizer (21.14%)

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

Manure, Agriculture, Fertilizer, Nutrient and Greenhouse gas are his primary areas of study. The Manure study combines topics in areas such as Environmental chemistry, Crop residue, Environmental engineering and Compost. His biological study spans a wide range of topics, including Water quality and Natural resource economics.

Fertilizer is a subfield of Agronomy that Gerard L. Velthof studies. His study in the field of Manure management is also linked to topics like Context. His Nitrate research incorporates themes from Soil water, Leaching and Irrigation.

Between 2017 and 2021, his most popular works were:

  • The role of nitrifier denitrification in the production of nitrous oxide revisited (105 citations)
  • China’s livestock transition: Driving forces, impacts, and consequences (92 citations)
  • Benefits and trade‐offs of replacing synthetic fertilizers by animal manures in crop production in China: A meta‐analysis (40 citations)

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

  • Agriculture
  • Ecology
  • Fertilizer

His primary areas of investigation include Greenhouse gas, China, Soil water, Agronomy and Fertilizer. Many of his research projects under Greenhouse gas are closely connected to Greenhouse effect with Greenhouse effect, tying the diverse disciplines of science together. His study focuses on the intersection of China and fields such as Land use with connections in the field of Agricultural science.

His research integrates issues of Surface irrigation, Crop yield and Crop in his study of Soil water. He combines subjects such as Soil horizon, Nitrate, Leaching and Groundwater with his study of Agronomy. As part of the same scientific family, Gerard L. Velthof usually focuses on Soil pH, concentrating on Manure and intersecting with Environmental impact assessment, Anaerobic digestion and Outreach.

Best Publications

  • Role of nitrifier denitrification in the production of nitrous oxide

    N Wrage;G.L Velthof;M.L van Beusichem;O Oenema

  • Towards an agronomic assessment of N2O emissions: a case study for arable crops

    J. W. Van Groenigen;G. L. Velthof;O. Oenema;K. J. Van Groenigen

  • Trends in Global Nitrous Oxide Emissions from Animal Production Systems

    O. Oenema;N. Wrage;N. Wrage;G.L. Velthof;J.W. van Groenigen

  • The role of nitrifier denitrification in the production of nitrous oxide revisited

    Nicole Wrage-Mönnig;Marcus A. Horn;Reinhard Well;Christoph Müller;Christoph Müller

  • China's livestock transition: Driving forces, impacts, and consequences

    Zhaohai Bai;Zhaohai Bai;Wenqi Ma;Lin Ma;Gerard L. Velthof

  • Benefits and trade-offs of replacing synthetic fertilizers by animal manures in crop production in China: A meta-analysis

    Xiaoying Zhang;Qunchao Fang;Tao Zhang;Wenqi Ma

  • Nitrous oxide emission from animal manures applied to soil under controlled conditions

    Gerard L. Velthof;Peter J. Kuikman;Oene Oenema

  • Integrated assessment of nitrogen losses from agriculture in EU-27 using MITERRA-EUROPE.

    G.L. Velthof;D.A. Oudendag;H.P. Witzke;W.A.H. Asman

  • Nitrous oxide emissions from grazed grassland.

    O. Oenema;G. L. Velthof;S. Yamulki;S. C. Jarvis

  • Nutrient losses from manure management in the European Union

    Oene Oenema;Diti Oudendag;Gerard L. Velthof

  • Modeling Nutrient Flows in the Food Chain of China

    L. Ma;W. Q. Ma;G. L. Velthof;F. H. Wang

  • Nitrogen and phosphorus use efficiencies and losses in the food chain in China at regional scales in 1980 and 2005.

    L. Ma;G.L. Velthof;F.H. Wang;W. Qin

  • Mitigation of ammonia, nitrous oxide and methane emissions from manure management chains: a meta-analysis and integrated assessment

    Yong Hou;Gerard L. Velthof;Oene Oenema

  • Integrated assessment of promising measures to decrease nitrogen losses from agriculture in EU-27

    O. Oenema;H.P. Witzke;Z. Klimont;J.P. Lesschen

  • Nitrogen, Phosphorus, and Potassium Flows through the Manure Management Chain in China.

    Zhaohai Bai;Lin Ma;Shuqin Jin;Wenqi Ma

  • Nitrous oxide emission from soils amended with crop residues

    Gerard L. Velthof;Peter J. Kuikman;Oene Oenema

  • The impact of the Nitrates Directive on nitrogen emissions from agriculture in the EU-27 during 2000-2008.

    G.L. Velthof;J.P. Lesschen;J. Webb;S. Pietrzak

  • Nitrous oxide emission from urine-treated soil as influenced by urine composition and soil physical conditions

    Jan Willem van Groenigen;Peter J. Kuikman;Willy J.M de Groot;Gerard L. Velthof

  • Nitrous oxide emissions from silage maize fields under different mineral nitrogen fertilizer and slurry applications

    J.W. van Groenigen;G.J. Kasper;G.L. Velthof;A. van den Pol-van Dasselaar

  • Alarming nutrient pollution of Chinese rivers as a result of agricultural transitions

    Maryna Strokal;Lin Ma;Zhaohai Bai;Shengji Luan

Frequent Co-Authors

Oene Oenema
Oene Oenema Wageningen University & Research
Peter Kuikman
Peter Kuikman Wageningen University & Research
Lin Ma
Lin Ma Chinese Academy of Sciences
Jan Willem van Groenigen
Jan Willem van Groenigen Wageningen University & Research
Zhaohai Bai
Zhaohai Bai Chinese Academy of Sciences
Fusuo Zhang
Fusuo Zhang China Agricultural University
Carolien Kroeze
Carolien Kroeze Wageningen University & Research
David R. Chadwick
David R. Chadwick Bangor University
Luis Lassaletta
Luis Lassaletta Technical University of Madrid
Zbigniew Klimont
Zbigniew Klimont International Institute for Applied Systems Analysis

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