Citation Rankings
Highly Cited Researchers
North America Highly Cited Researchers Citation Agriculture & Forestry / Soil Sciences and Plant Nutrition 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
soil
soil science
soil carbon
soil organic matter
soil organic carbon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
119,893
64,271
0.536
* Total Citation Counts Rankings
Ranking Based On Selection :2
soil biogeochemistry
land use and greenhouse gas emissions
soil health
biofuel sustainability
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
68,089
27,585
0.405
* Total Citation Counts Rankings
Ranking Based On Selection :3
Biogeochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
58,437
20,624
0.353
* Total Citation Counts Rankings
Ranking Based On Selection :4
Natural Resource Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,189
12,836
0.246
* Total Citation Counts Rankings
Ranking Based On Selection :5
soil science
ecology
arctic science
microbial ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
51,268
23,785
0.464
* Total Citation Counts Rankings
Ranking Based On Selection :6
Soil Physics
Vadose Zone Hydrology
Numerical Modeling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
50,699
20,820
0.411
* Total Citation Counts Rankings
Ranking Based On Selection :7
Molecular Microbiology
Soil Science
Biogeochemistry
Ecosystem Ecology
Sustainable Agriculture
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,758
22,809
0.510
* Total Citation Counts Rankings
Ranking Based On Selection :8
Soil Microbial Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,886
17,091
0.399
* Total Citation Counts Rankings
Ranking Based On Selection :9
soil science
environmental science
sustainable agriculture
agronomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
41,830
14,650
0.350
* Total Citation Counts Rankings
Ranking Based On Selection :10
Soil chemistry
soil biochemistry
plant nutrition
environmental issues related to agriculture
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
40,421
11,427
0.283
* Total Citation Counts Rankings
Ranking Based On Selection :11
Soil decomposition
modeling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
39,308
20,076
0.511
* Total Citation Counts Rankings
Ranking Based On Selection :12
Biogeochemistry
Soil Science
Wetlands and Aquatic Systems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,453
8,659
0.225
* Total Citation Counts Rankings
Ranking Based On Selection :13
Soil microbiology
soil chemistry
waste management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,057
12,172
0.320
* Total Citation Counts Rankings
Ranking Based On Selection :14
soil physics
soil
water
vadose zone hydrology
soil science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,876
13,296
0.371
* Total Citation Counts Rankings
Ranking Based On Selection :15
Tropical soils
hunger
nutrition
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,989
8,409
0.240
* Total Citation Counts Rankings
Ranking Based On Selection :16
soil microbial ecology
biogeochemistry
stable isotopes
ecosystem science
global change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,938
18,849
0.539
* Total Citation Counts Rankings
Ranking Based On Selection :17
soil
biogeochemistry
metals
arsenic
soil organic carbon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,455
12,718
0.380
* Total Citation Counts Rankings
Ranking Based On Selection :18
soil science
microbial ecology
agroecology
soil microbiology
remediation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,320
12,008
0.360
* Total Citation Counts Rankings
Ranking Based On Selection :19
soil science
agronomy
agriculture
environmental science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,152
11,226
0.413
* Total Citation Counts Rankings
Ranking Based On Selection :20
irrigation
evapotranspiration
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,883
9,178
0.341
* Total Citation Counts Rankings
Ranking Based On Selection :21
Soil and Water Quality
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,322
14,541
0.574
* Total Citation Counts Rankings
Ranking Based On Selection :22
litter decomposition
soil organic matter
stable isotopes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,030
15,401
0.641
* Total Citation Counts Rankings
Ranking Based On Selection :23
soil science
biogeochemistry
greenhouse gases
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,383
11,405
0.488
* Total Citation Counts Rankings
Ranking Based On Selection :24
sensors
nutrient management
nitrogen
plant nutrition
developing world agriculture
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,026
8,556
0.388
* Total Citation Counts Rankings
Ranking Based On Selection :25
Nitrogen Cycling
Carbon Cycling
Microbial Communities
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,539
8,262
0.384
* Total Citation Counts Rankings
Rankings
2,178
1,015
12
Ranking Based On Selection: 1
Johannes Lehmann
Cornell University
Ithaca, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
119,893
64,271
0.536
soil
soil science
soil carbon
soil organic matter
soil organic carbon
* Total Citation Counts Rankings
Rankings
6,083
2,887
8
Ranking Based On Selection: 2
Keith Paustian
Colorado State University
Fort Collins, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
68,089
27,585
0.405
soil biogeochemistry
land use and greenhouse gas emissions
soil health
biofuel sustainability
* Total Citation Counts Rankings
Rankings
7,776
3,704
5
Ranking Based On Selection: 3
Donald Sparks
University of Delaware
Newark, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
58,437
20,624
0.353
* Total Citation Counts Rankings
Rankings
9,334
4,456
13
Ranking Based On Selection: 4
Eldor A Paul
Colorado State University
Fort Collins, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,189
12,836
0.246
Natural Resource Ecology
* Total Citation Counts Rankings
Rankings
9,613
4,580
30
Ranking Based On Selection: 5
Joshua P Schimel
University of California Santa Barbara
Santa Barbara, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
51,268
23,785
0.464
soil science
ecology
arctic science
microbial ecology
* Total Citation Counts Rankings
Rankings
9,802
4,672
17
Ranking Based On Selection: 6
Jiri Simunek
University of California Riverside
Riverside, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
50,699
20,820
0.411
Soil Physics
Vadose Zone Hydrology
Numerical Modeling
* Total Citation Counts Rankings
Rankings
11,920
5,666
39
Ranking Based On Selection: 7
Eoin Brodie
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,758
22,809
0.510
Molecular Microbiology
Soil Science
Biogeochemistry
Ecosystem Ecology
Sustainable Agriculture
* Total Citation Counts Rankings
Rankings
12,769
6,060
153
Ranking Based On Selection: 8
Mary K Firestone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,886
17,091
0.399
Soil Microbial Ecology
* Total Citation Counts Rankings
Rankings
13,307
6,310
47
Ranking Based On Selection: 9
Ray Weil
University of Maryland
College Park, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
41,830
14,650
0.350
soil science
environmental science
sustainable agriculture
agronomy
* Total Citation Counts Rankings
Rankings
14,040
6,635
8
Ranking Based On Selection: 10
M Ali Tabatabai
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
40,421
11,427
0.283
Soil chemistry
soil biochemistry
plant nutrition
environmental issues related to agriculture
* Total Citation Counts Rankings
Rankings
14,695
6,946
57
Ranking Based On Selection: 11
Katherine Todd Brown
University of Florida
Gainesville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
39,308
20,076
0.511
Soil decomposition
modeling
* Total Citation Counts Rankings
Rankings
15,205
7,174
59
Ranking Based On Selection: 12
K Ramesh Reddy
University of Florida
Gainesville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,453
8,659
0.225
Biogeochemistry
Soil Science
Wetlands and Aquatic Systems
* Total Citation Counts Rankings
Rankings
15,459
7,295
22
Ranking Based On Selection: 13
Le Sommers
Colorado State University
Fort Collins, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,057
12,172
0.320
Soil microbiology
soil chemistry
waste management
* Total Citation Counts Rankings
Rankings
16,949
7,966
10
Ranking Based On Selection: 14
Robert Horton
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,876
13,296
0.371
soil physics
soil
water
vadose zone hydrology
soil science
* Total Citation Counts Rankings
Rankings
17,650
8,287
67
Ranking Based On Selection: 15
Pedro A Sanchez
University of Florida
Gainesville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,989
8,409
0.240
Tropical soils
hunger
nutrition
* Total Citation Counts Rankings
Rankings
17,683
8,301
8
Ranking Based On Selection: 16
Bruce Hungate
Northern Arizona University
Flagstaff, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,938
18,849
0.539
soil microbial ecology
biogeochemistry
stable isotopes
ecosystem science
global change
* Total Citation Counts Rankings
Rankings
18,875
8,814
364
Ranking Based On Selection: 17
Fendorf
Stanford University
Stanford, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,455
12,718
0.380
soil
biogeochemistry
metals
arsenic
soil organic carbon
* Total Citation Counts Rankings
Rankings
18,991
8,869
83
Ranking Based On Selection: 18
Kate Scow
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,320
12,008
0.360
soil science
microbial ecology
agroecology
soil microbiology
remediation
* Total Citation Counts Rankings
Rankings
26,073
11,974
17
Ranking Based On Selection: 19
Alan Franzluebbers
US Department of Agriculture
Washington, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,152
11,226
0.413
soil science
agronomy
agriculture
environmental science
* Total Citation Counts Rankings
Rankings
26,448
12,138
72
Ranking Based On Selection: 20
Terry A Howell SR|Terry A. Howell, Sr.
Texas A&M University
College Station, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,883
9,178
0.341
irrigation
evapotranspiration
* Total Citation Counts Rankings
Rankings
28,930
13,184
120
Ranking Based On Selection: 21
Yuncong Li
University of Florida
Gainesville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,322
14,541
0.574
Soil and Water Quality
* Total Citation Counts Rankings
Rankings
31,311
14,202
41
Ranking Based On Selection: 22
M Francesca Cotrufo
Colorado State University
Fort Collins, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,030
15,401
0.641
litter decomposition
soil organic matter
stable isotopes
* Total Citation Counts Rankings
Rankings
32,586
14,712
146
Ranking Based On Selection: 23
Horwath William
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,383
11,405
0.488
soil science
biogeochemistry
greenhouse gases
* Total Citation Counts Rankings
Rankings
35,410
15,895
10
Ranking Based On Selection: 24
William Raun
Oklahoma State University Stillwater
Stillwater, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,026
8,556
0.388
sensors
nutrient management
nitrogen
plant nutrition
developing world agriculture
* Total Citation Counts Rankings
Rankings
36,537
16,338
42
Ranking Based On Selection: 25
David D Myrold
Oregon State University
Corvallis, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,539
8,262
0.384
Nitrogen Cycling
Carbon Cycling
Microbial Communities