Citation Rankings
Highly Cited Researchers

Highly Cited Researchers Citation Rankings (Sort by last 6 years Citation Index) 2025

The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.

* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 1
Nigeria
P. Lava Kumar
Virology
diagnostics
crop protection
seed health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,611
7,055
0.665
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 2
Nigeria
Ranajit Bandyopadhyay
plant pathology
mycotoxin
aflatoxin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,075
6,378
0.528
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 3
Nigeria
Tahirou Abdoulaye
Agricultural Economics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,428
5,480
0.738
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 4
Nigeria
James Legg
Cassava Viruses
Whiteflies
Epidemiology
Molecular Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,349
5,381
0.576
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 5
Nigeria
Robert Asiedu
crop improvement
breeding
genetics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,962
3,971
0.499
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 6
Nigeria
Leena Tripathi
Plant Biotechnology
Gene Editing
Genetic Modification
Sustainable Agriculture
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,549
3,492
0.629
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 7
Nigeria
Lieven Claessens
climate smart agriculture
sustainable intensification
food security
soil science
geomorphology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,673
3,486
0.614
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 8
Nigeria
Peter Kulakow
Plant Breeding
Genetics
Cassava
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,129
3,084
0.601
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 9
Nigeria
Chiedozie Egesi
breeding
genetics
biotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,211
2,949
0.700
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 10
Nigeria
Leonard Rusinamhodzi
Agronomy
ISFM
Crop modeling
farming systems analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,245
2,607
0.614
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 11
Nigeria
John Derera
agriculture
genetics
biology
molecular
food security
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,954
2,286
0.578
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 12
Nigeria
Adebayo Busura Abass
Food Technology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,990
2,258
0.755
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 13
Nigeria
Shiferaw Feleke
Agricultural Economics
Impact Evaluation
International trade & policy analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,653
2,189
0.825
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 14
Nigeria
Julius Manda
Adoption and Impact of agricultural Technologies
Development economics
Impact evaluation and applied econometrics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,321
2,113
0.910
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 15
Nigeria
Jaindra N Tripathi
Plant Biotechnology
plant tissue culture
gene editing
and transgenics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,233
2,069
0.640
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 16
Nigeria
Asrat Asfaw
plant breeding
genetics
molecular breeding
genomics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,555
1,965
0.769
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 17
Nigeria
E. Jeroen Huising
Soil Ecology
Soil Science
Natural Resources Management
Soil Fertility
Soil Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,893
1,954
0.502
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 18
Nigeria
Allan F Brown
banana
Plant breeding
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,146
1,737
0.419
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 19
Nigeria
Adane Hirpa Tufa
impact evaluation
value/supply chain
gender analysis
conservation agriculture
climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,733
1,271
0.733
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 20
Nigeria
Steven M Cole
gender
rural development
health
nutrition
inequality
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,476
1,244
0.843
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 21
Nigeria
Ibnou Dieng
Statistics
Data Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,444
1,225
0.848
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 22
Nigeria
Godfrey Taulya
Agronomy
Crop Growth Modelling
Crop Nutrition and Water Requirements
Farming Systems
Soil Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,348
1,138
0.844
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 23
Nigeria
Siraj Ismail Kayondo
Molecular Plant breeding
Genetics
Plant-Pathogen interactions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
875
818
0.935
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 24
Nigeria
Laura Cortada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,015
763
0.752
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 25
Nigeria
Haroon Sseguya
Knowledge Management
Monitoring and Evaluation
Capacity Building
Technology Scaling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
986
724
0.734
* Last 6 Years Citation Counts Rankings
Rankings
59,920
Nigeria
47
1
Ranking Based On Selection: 1
P. Lava Kumar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,611
7,055
0.665
Virology
diagnostics
crop protection
seed health
* Last 6 Years Citation Counts Rankings
Rankings
68,663
Nigeria
51
2
Ranking Based On Selection: 2
Ranajit Bandyopadhyay
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,075
6,378
0.528
* Last 6 Years Citation Counts Rankings
Rankings
83,782
Nigeria
68
3
Ranking Based On Selection: 3
Tahirou Abdoulaye
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,428
5,480
0.738
* Last 6 Years Citation Counts Rankings
Rankings
85,780
Nigeria
70
4
Ranking Based On Selection: 4
James Legg
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,349
5,381
0.576
Cassava Viruses
Whiteflies
Epidemiology
Molecular Ecology
* Last 6 Years Citation Counts Rankings
Rankings
124,783
Nigeria
115
5
Ranking Based On Selection: 5
Robert Asiedu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,962
3,971
0.499
* Last 6 Years Citation Counts Rankings
Rankings
145,210
Nigeria
151
6
Ranking Based On Selection: 6
Leena Tripathi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,549
3,492
0.629
Plant Biotechnology
Gene Editing
Genetic Modification
Sustainable Agriculture
* Last 6 Years Citation Counts Rankings
Rankings
145,495
Nigeria
152
7
Ranking Based On Selection: 7
Lieven Claessens
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,673
3,486
0.614
climate smart agriculture
sustainable intensification
food security
soil science
geomorphology
* Last 6 Years Citation Counts Rankings
Rankings
167,207
Nigeria
188
8
Ranking Based On Selection: 8
Peter Kulakow
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,129
3,084
0.601
* Last 6 Years Citation Counts Rankings
Rankings
175,769
Nigeria
198
9
Ranking Based On Selection: 9
Chiedozie Egesi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,211
2,949
0.700
* Last 6 Years Citation Counts Rankings
Rankings
200,947
Nigeria
250
10
Ranking Based On Selection: 10
Leonard Rusinamhodzi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,245
2,607
0.614
Agronomy
ISFM
Crop modeling
farming systems analysis
* Last 6 Years Citation Counts Rankings
Rankings
230,475
Nigeria
328
11
Ranking Based On Selection: 11
John Derera
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,954
2,286
0.578
agriculture
genetics
biology
molecular
food security
* Last 6 Years Citation Counts Rankings
Rankings
233,434
Nigeria
335
12
Ranking Based On Selection: 12
Adebayo Busura Abass
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,990
2,258
0.755
* Last 6 Years Citation Counts Rankings
Rankings
240,907
Nigeria
345
13
Ranking Based On Selection: 13
Shiferaw Feleke
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,653
2,189
0.825
Agricultural Economics
Impact Evaluation
International trade & policy analysis
* Last 6 Years Citation Counts Rankings
Rankings
249,704
Nigeria
366
14
Ranking Based On Selection: 14
Julius Manda
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,321
2,113
0.910
Adoption and Impact of agricultural Technologies
Development economics
Impact evaluation and applied econometrics
* Last 6 Years Citation Counts Rankings
Rankings
255,075
Nigeria
380
15
Ranking Based On Selection: 15
Jaindra N Tripathi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,233
2,069
0.640
Plant Biotechnology
plant tissue culture
gene editing
and transgenics
* Last 6 Years Citation Counts Rankings
Rankings
268,363
Nigeria
420
16
Ranking Based On Selection: 16
Asrat Asfaw
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,555
1,965
0.769
plant breeding
genetics
molecular breeding
genomics
* Last 6 Years Citation Counts Rankings
Rankings
269,798
Nigeria
423
17
Ranking Based On Selection: 17
E. Jeroen Huising
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,893
1,954
0.502
Soil Ecology
Soil Science
Natural Resources Management
Soil Fertility
Soil Biology
* Last 6 Years Citation Counts Rankings
Rankings
301,668
Nigeria
496
18
Ranking Based On Selection: 18
Allan F Brown
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,146
1,737
0.419
* Last 6 Years Citation Counts Rankings
Rankings
396,781
Nigeria
796
19
Ranking Based On Selection: 19
Adane Hirpa Tufa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,733
1,271
0.733
impact evaluation
value/supply chain
gender analysis
conservation agriculture
climate change
* Last 6 Years Citation Counts Rankings
Rankings
403,829
Nigeria
834
20
Ranking Based On Selection: 20
Steven M Cole
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,476
1,244
0.843
gender
rural development
health
nutrition
inequality
* Last 6 Years Citation Counts Rankings
Rankings
408,961
Nigeria
855
21
Ranking Based On Selection: 21
Ibnou Dieng
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,444
1,225
0.848
* Last 6 Years Citation Counts Rankings
Rankings
433,398
Nigeria
945
22
Ranking Based On Selection: 22
Godfrey Taulya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,348
1,138
0.844
Agronomy
Crop Growth Modelling
Crop Nutrition and Water Requirements
Farming Systems
Soil Science
* Last 6 Years Citation Counts Rankings
Rankings
549,488
Nigeria
1,633
23
Ranking Based On Selection: 23
Siraj Ismail Kayondo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
875
818
0.935
Molecular Plant breeding
Genetics
Plant-Pathogen interactions
* Last 6 Years Citation Counts Rankings
Rankings
574,486
Nigeria
1,828
24
Ranking Based On Selection: 24
Laura Cortada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,015
763
0.752
* Last 6 Years Citation Counts Rankings
Rankings
593,667
Nigeria
2,000
25
Ranking Based On Selection: 25
Haroon Sseguya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
986
724
0.734
Knowledge Management
Monitoring and Evaluation
Capacity Building
Technology Scaling