Productivity Rankings is a unique service offered only by “AD Scientific Index”. This is a ranking system derived from the i10 index in order to show the productivity of the scientist in publishing scientific articles of value. Productivity Rankings is an instrument that lists productive scientists in a given area, discipline, university, and country and can guide the development of meaningful incentives and academic policies. The world rankings, regional rankings, and university rankings of scientists in this table are developed based on the total i10 index. Additionally, click to view the special rankings based on Productivity Rankings: Scientists Last 6 years' i10 Index", Universities Total i10 Index Rankings 2025, Universities Last 6 Years i10 Index Rankings 2025 "Art and Humanities i10 Productivity Rankings" and "Social Sciences and Humanities i10 Productivity Rankings".
* Total i10 IndexRankings
Ranking Based On Selection :1
Agriculture
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
129
100
0.775
* Total i10 IndexRankings
Ranking Based On Selection :2
Soil Conservation
mineralogy
soil physics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
74
52
0.703
* Total i10 IndexRankings
Ranking Based On Selection :3
Soil Fertility Management:Organic & inorganic fertilizers. Tillage
mulching & biochar. Crop quality
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
54
50
0.926
* Total i10 IndexRankings
Ranking Based On Selection :4
climate smart agriculture
sustainable intensification
food security
soil science
geomorphology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
53
43
0.811
* Total i10 IndexRankings
Ranking Based On Selection :5
Raw Materials Processing
Valorization of biomass
Soil tillage and compaction
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
53
37
0.698
* Total i10 IndexRankings
Ranking Based On Selection :6
Soil-environmental chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
50
28
0.560
* Total i10 IndexRankings
Ranking Based On Selection :7
Soil Science and Conservation
Soil Physics and Hydrology
Soil and Water Management
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
48
40
0.833
* Total i10 IndexRankings
Ranking Based On Selection :8
Soil Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
43
23
0.535
* Total i10 IndexRankings
Ranking Based On Selection :9
Nitrogen Fixation
Mycorhizae Biofertilizer
Organic Agriculture
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
42
12
0.286
* Total i10 IndexRankings
Ranking Based On Selection :10
Soil and Environmental Chemistry
Remediation of polluted soil
ISFM
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
41
32
0.780
* Total i10 IndexRankings
Ranking Based On Selection :11
Soil Survey and Land Use Planning
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
38
11
0.289
* Total i10 IndexRankings
Ranking Based On Selection :12
Crp Improvement Genotype x Environment studies
Evolution and Biology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
36
28
0.778
* Total i10 IndexRankings
Ranking Based On Selection :13
Soil Physics
Soil and Water Management and Conservation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
36
22
0.611
* Total i10 IndexRankings
Ranking Based On Selection :14
Soil Physics
Hydrology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
35
29
0.829
* Total i10 IndexRankings
Ranking Based On Selection :15
Soil Ecology
Soil Science
Natural Resources Management
Soil Fertility
Soil Biology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
35
21
0.600
* Total i10 IndexRankings
Ranking Based On Selection :16
Soil Structure
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
33
25
0.758
* Total i10 IndexRankings
Ranking Based On Selection :17
Soil fertility
Nutrient management.
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
32
11
0.344
* Total i10 IndexRankings
Ranking Based On Selection :18
Metagenomics of pristine and polluted soils
Biodegradation and Bioremediation of Petroleum Hydrocarbons
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
31
23
0.742
* Total i10 IndexRankings
Ranking Based On Selection :19
Pedology
soil management
soil fertility
environment
soil agronomy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
31
16
0.516
* Total i10 IndexRankings
Ranking Based On Selection :20
Soil Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
31
11
0.355
* Total i10 IndexRankings
Ranking Based On Selection :21
Mushroom science
bioremediation of polluted soils
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
30
20
0.667
* Total i10 IndexRankings
Ranking Based On Selection :22
Soil Fertility Management
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
29
13
0.448
* Total i10 IndexRankings
Ranking Based On Selection :23
Crop Growth and Yield Modelling
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
28
17
0.607
* Total i10 IndexRankings
Ranking Based On Selection :24
Soil physics
soil and water conservation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
26
22
0.846
* Total i10 IndexRankings
Ranking Based On Selection :25
Soil Survey
Land use Planing
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
25
16
0.640
A. Egrinya Eneji
University of Calabar
Calabar, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
129
100
0.775
Charles Arizechukwu Igwe
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
74
52
0.703
Soil Conservation
mineralogy
soil physics
Adekiya Aruna Olasekan
Landmark University
Omu-Aran, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
54
50
0.926
Soil Fertility Management:Organic & inorganic fertilizers. Tillage
mulching & biochar. Crop quality
Lieven Claessens
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
53
43
0.811
climate smart agriculture
sustainable intensification
food security
soil science
geomorphology
Azikiwe Peter Onwualu
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
53
37
0.698
Raw Materials Processing
Valorization of biomass
Soil tillage and compaction
John O Agbenin
Ahmadu Bello University
Zaria, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
50
28
0.560
Soil-environmental chemistry
Sunday E. Obalum
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
48
40
0.833
Soil Science and Conservation
Soil Physics and Hydrology
Soil and Water Management
Felix Kolawole Salako
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
43
23
0.535
Marian G. Solomon
University of Calabar
Calabar, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
42
12
0.286
Nitrogen Fixation
Mycorhizae Biofertilizer
Organic Agriculture
Jamiu Oladipupo Azeez
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
41
32
0.780
Soil and Environmental Chemistry
Remediation of polluted soil
ISFM
Onweremadu, Emmanuel Uzoma
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
38
11
0.289
Soil Survey and Land Use Planning
Charity Aremu
Landmark University
Omu-Aran, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
36
28
0.778
Crp Improvement Genotype x Environment studies
Evolution and Biology
Martin Obi
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
36
22
0.611
Soil Physics
Soil and Water Management and Conservation
Ayodele Ajayi
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
35
29
0.829
Soil Physics
Hydrology
E. Jeroen Huising
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
35
21
0.600
Soil Ecology
Soil Science
Natural Resources Management
Soil Fertility
Soil Biology
Durodoluwa Oyedele
Obafemi Awolowo University
Ile-Ife, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
33
25
0.758
Damian Asawalam
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
32
11
0.344
Soil fertility
Nutrient management.
Oluwafemi S. Obayori
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
31
23
0.742
Metagenomics of pristine and polluted soils
Biodegradation and Bioremediation of Petroleum Hydrocarbons
Charles Asadu
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
31
16
0.516
Pedology
soil management
soil fertility
environment
soil agronomy
Ivara E. Esu
University of Calabar
Calabar, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
31
11
0.355
Clementina Oyinkansola Adenipekun|C O Adenipekun
University of Ibadan
Ibadan, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
30
20
0.667
Mushroom science
bioremediation of polluted soils
Olufemi Ayodele
Ekiti State University Ado Ekiti
Ado-Ekiti, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
29
13
0.448
Soil Fertility Management
Adekalu Kenneth Oludolapo
Obafemi Awolowo University
Ile-Ife, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
28
17
0.607
Crop Growth and Yield Modelling
Suarau Oshunsanya
University of Ibadan
Ibadan, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
26
22
0.846
Soil physics
soil and water conservation
Peter Ezeaku
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
25
16
0.640
Soil Survey
Land use Planing