Citation Rankings
Highly Cited Researchers
National Root Crops Research Institute, Umudike Highly Cited Researchers Citation Rankings 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.
* Total Citation Counts Rankings
Ranking Based On Selection :1
Agricultural Economist
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,806
734
0.406
* Total Citation Counts Rankings
Ranking Based On Selection :2
Agroforetry and Climate change Mitigation and Adaptation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
407
379
0.931
* Total Citation Counts Rankings
Ranking Based On Selection :3
Plant Molecular Biology and Genetic Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
281
168
0.598
* Total Citation Counts Rankings
Ranking Based On Selection :4
Biotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
258
253
0.981
* Total Citation Counts Rankings
Ranking Based On Selection :5
Molecular diagnostics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
254
195
0.768
* Total Citation Counts Rankings
Ranking Based On Selection :6
Agricultural Biochemistry and Nutrition
Rabbit Nutrition
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
83
66
0.795
* Total Citation Counts Rankings
Ranking Based On Selection :7
climate variability and change
food security and value chain
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
71
69
0.972
* Total Citation Counts Rankings
Ranking Based On Selection :8
Agricutural Research (Agronomy)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
68
39
0.574
* Total Citation Counts Rankings
Ranking Based On Selection :9
Soil fertility and plant nutrition
Fertilizer technology
Agronomy
Insect frass fertilizer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25
22
0.880
* Total Citation Counts Rankings
Ranking Based On Selection :10
Atmospheric Science
Crop-Weather Modelling
Meteorology
Climate Socioeconomics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24
19
0.792
* Total Citation Counts Rankings
Ranking Based On Selection :11
Agric. Extension
gender
Agroforestry and climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9
9
1.000
* Total Citation Counts Rankings
Ranking Based On Selection :12
Plant Biotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
* Total Citation Counts Rankings
Ranking Based On Selection :13
Food quality and assurance
Food safety
Food chemistry
Food processing and preservation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3
3
1.000
* Total Citation Counts Rankings
Ranking Based On Selection :14
Biotechnology
Microbial genetics
Agronomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2
2
1.000
* Total Citation Counts Rankings
Rankings
472,748
1,220
1
Ranking Based On Selection: 1
Okoye B. C
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,806
734
0.406
* Total Citation Counts Rankings
Rankings
999,544
7,852
2
Ranking Based On Selection: 2
Ekeledo Paul|Ekeledo,Paul,Ifeanyi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
407
379
0.931
Agroforetry and Climate change Mitigation and Adaptation
* Total Citation Counts Rankings
Rankings
1,148,582
10,823
3
Ranking Based On Selection: 3
Sskahya|kahya SS
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
281
168
0.598
Plant Molecular Biology and Genetic Engineering
* Total Citation Counts Rankings
Rankings
1,183,261
11,555
4
Ranking Based On Selection: 4
Ihuoma Okwuonu|Ihuoma Umezurumba, I.C. Okwuonu, Okwuonu I.C
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
258
253
0.981
* Total Citation Counts Rankings
Rankings
1,190,295
11,713
5
Ranking Based On Selection: 5
Nneka Okereke
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
254
195
0.768
* Total Citation Counts Rankings
Rankings
1,651,615
22,618
6
Ranking Based On Selection: 6
Olaleru, Ibikunle Funso
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
83
66
0.795
Agricultural Biochemistry and Nutrition
Rabbit Nutrition
* Total Citation Counts Rankings
Rankings
1,707,501
24,090
7
Ranking Based On Selection: 7
Confidence Kalu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
71
69
0.972
* Total Citation Counts Rankings
Rankings
1,724,964
24,600
8
Ranking Based On Selection: 8
Adeyemi Olojede|Adeyemi Olujide Olojede, Yemi Olojede
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
68
39
0.574
* Total Citation Counts Rankings
Rankings
2,018,890
33,278
9
Ranking Based On Selection: 9
Emmanuel Anedo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25
22
0.880
Soil fertility and plant nutrition
Fertilizer technology
Agronomy
Insect frass fertilizer
* Total Citation Counts Rankings
Rankings
2,029,539
33,620
10
Ranking Based On Selection: 10
Chkwuemeka Okezie Sampson
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24
19
0.792
Atmospheric Science
Crop-Weather Modelling
Meteorology
Climate Socioeconomics
* Total Citation Counts Rankings
Rankings
2,206,352
39,823
11
Ranking Based On Selection: 11
Agoh Ec
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9
9
1.000
Agric. Extension
gender
Agroforestry and climate change
* Total Citation Counts Rankings
Rankings
2,279,919
42,744
12
Ranking Based On Selection: 12
Jane Reuben-Kalu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
* Total Citation Counts Rankings
Rankings
2,318,981
44,385
13
Ranking Based On Selection: 13
Ernest Chukwudi Ogbete
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3
3
1.000
Food quality and assurance
Food safety
Food chemistry
Food processing and preservation
* Total Citation Counts Rankings
Rankings
2,343,142
45,465
14
Ranking Based On Selection: 14
Asa Adedoyin Ayobami
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2
2
1.000
Biotechnology
Microbial genetics
Agronomy