On AD Scientific Index, you can explore the individual achievements of scientists in detail and evaluate their academic productivity based on total and recent H-index, i10 index, and citation counts. With Premium Membership, gain access to extended analyses and detailed data to assess and enhance your academic performance more effectively.
* Total H Index Rankings
Ranking Based
On Selection: 1
![Pay Drechsel](https://cdn.adscientificindex.com/pictures/4a/4389047.jpg)
Resource recovery & reuse
Urban agriculture
Safe wastewater use
Soil fertility & plant nutrition
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
71
41
0.577
* Total H Index Rankings
Ranking Based
On Selection: 2
![Bharat Sharma](https://cdn.adscientificindex.com/pictures/b6/4391995.jpg)
Soil
Water
Land and Crop Management
modelling
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
33
23
0.697
* Total H Index Rankings
Ranking Based
On Selection: 3
![Suriyagoda Lalith](https://cdn.adscientificindex.com/pictures/dc/291988.jpg)
Agronomy
Plant Nutrition
Crop Physiology
Crop Modelling
Bio-Statistics
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
25
21
0.840
* Total H Index Rankings
Ranking Based
On Selection: 4
![SA Kulasooriya](https://cdn.adscientificindex.com/pictures/b0/517629.jpg)
Soil Microbiology
Nitrogen Fixation
Toxigenic cyanobacteria
Biofuels
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
21
12
0.571
* Total H Index Rankings
Ranking Based
On Selection: 5
![HMSK Herath](https://cdn.adscientificindex.com/pictures/0c/359849.jpg)
Soil Science - Soil C Dynamics and Soil Fertility Management
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
16
14
0.875
* Total H Index Rankings
Ranking Based
On Selection: 6
![BCwalpola](/user/assets/images/profile/no-profile-photo.png)
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
16
13
0.813
* Total H Index Rankings
Ranking Based
On Selection: 7
![Uwa Vitharana](https://cdn.adscientificindex.com/pictures/bb/530683.jpg)
Soil Science
Proximal soil sensing
Digital soil mapping
Pedometrics
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
16
11
0.688
* Total H Index Rankings
Ranking Based
On Selection: 8
![Dal Leelamanie](https://cdn.adscientificindex.com/pictures/47/302805.jpg)
Soil Physics
Soil water repellency
hydraulic movements in soils
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
15
12
0.800
* Total H Index Rankings
Ranking Based
On Selection: 9
![Saman Dharmakeerthi](https://cdn.adscientificindex.com/pictures/c7/434404.jpg)
soil fertility
plant nutrition
biochar
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
14
12
0.857
* Total H Index Rankings
Ranking Based
On Selection: 10
![EPN Udayakumara](https://cdn.adscientificindex.com/pictures/5e/4317085.jpg)
Soil degradation and management
Modeling ecosystem services
Soil science
Hydrology
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
13
13
1.000
* Total H Index Rankings
Ranking Based
On Selection: 11
![Eranga M Wimalasiri](https://cdn.adscientificindex.com/pictures/7a/4732872.jpg)
Crop modelling
Climate change
Underutilised crops
Agro-environmental modelling
Soil science
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
10
10
1.000
* Total H Index Rankings
Ranking Based
On Selection: 12
![Ananda Jayakody](/user/assets/images/profile/no-profile-photo.png)
Soil Science and Plant Nutrition
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
8
5
0.625
* Total H Index Rankings
Ranking Based
On Selection: 13
![Surani Chathurika](/user/assets/images/profile/no-profile-photo.png)
Soil fertility improvement
Advanced fertilizer technologies
Green soil amendments
Biostimulants applications
Advanced seed t
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
6
6
1.000
* Total H Index Rankings
Ranking Based
On Selection: 14
![Jayani J. Wewalwela](https://cdn.adscientificindex.com/pictures/cd/5732479.jpg)
Soil microbiology
Nitrogen Fixation
PGPR
Plant Nutrition
Soil Fertility
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
* Total H Index Rankings
Ranking Based
On Selection: 15
![SR Amarasinghe](https://cdn.adscientificindex.com/pictures/cd/5733331.jpg)
Soil Science
Water Pollution
Waste Management
Water resource management
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
5
3
0.600
* Total H Index Rankings
Ranking Based
On Selection: 16
![Sriharan Raguraj](https://cdn.adscientificindex.com/pictures/63/4706093.jpg)
Plant Biostimulants
Soil science
Plant nutrition
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
4
4
1.000
* Total H Index Rankings
Ranking Based
On Selection: 17
![Liyanage Lrmc](https://cdn.adscientificindex.com/pictures/46/4705748.jpg)
Soil Science
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
4
4
1.000
* Total H Index Rankings
Ranking Based
On Selection: 18
![TDP Liyanage](https://cdn.adscientificindex.com/pictures/49/5733407.jpg)
Soil Science
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
4
3
0.750
* Total H Index Rankings
Ranking Based
On Selection: 19
![Bhanuka Gunathilake](https://cdn.adscientificindex.com/pictures/cd/5057736.jpg)
Geochemistry
Mineralogy
Water Quality
Environmental Sciences
GIS & Remote Sensing
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
2
2
1.000
* Total H Index Rankings
Ranking Based
On Selection: 20
![UI Samarawickrama](https://cdn.adscientificindex.com/pictures/74/5733490.jpg)
Soil Science
Geoinformatics
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
1
1
1.000
Pay Drechsel
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
71
41
0.577
Resource recovery & reuse
Urban agriculture
Safe wastewater use
Soil fertility & plant nutrition
Bharat Sharma
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
33
23
0.697
Soil
Water
Land and Crop Management
modelling
Suriyagoda Lalith
University of Peradeniya
Peradeniya, Sri Lanka
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
25
21
0.840
Agronomy
Plant Nutrition
Crop Physiology
Crop Modelling
Bio-Statistics
SA Kulasooriya
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
21
12
0.571
Soil Microbiology
Nitrogen Fixation
Toxigenic cyanobacteria
Biofuels
HMSK Herath
Uva Wellassa University
Badulla, Sri Lanka
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
16
14
0.875
Soil Science - Soil C Dynamics and Soil Fertility Management
BCwalpola
University of Ruhuna
Matara and Galle, Sri Lanka
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
16
13
0.813
Uwa Vitharana
University of Peradeniya
Peradeniya, Sri Lanka
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
16
11
0.688
Soil Science
Proximal soil sensing
Digital soil mapping
Pedometrics
Dal Leelamanie
University of Ruhuna
Matara and Galle, Sri Lanka
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
15
12
0.800
Soil Physics
Soil water repellency
hydraulic movements in soils
Saman Dharmakeerthi
University of Peradeniya
Peradeniya, Sri Lanka
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
14
12
0.857
soil fertility
plant nutrition
biochar
EPN Udayakumara
Sabaragamuwa University
Sendai, Sri Lanka
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
13
13
1.000
Soil degradation and management
Modeling ecosystem services
Soil science
Hydrology
Eranga M Wimalasiri
Sabaragamuwa University
Sendai, Sri Lanka
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
10
10
1.000
Crop modelling
Climate change
Underutilised crops
Agro-environmental modelling
Soil science
Ananda Jayakody
University of Peradeniya
Peradeniya, Sri Lanka
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
8
5
0.625
Soil Science and Plant Nutrition
Surani Chathurika
University of Sri Jayewardenepura
Nugegoda, Sri Lanka
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
6
6
1.000
Soil fertility improvement
Advanced fertilizer technologies
Green soil amendments
Biostimulants applications
Advanced seed t
Jayani J. Wewalwela
University of Colombo
Colombo, Sri Lanka
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
Soil microbiology
Nitrogen Fixation
PGPR
Plant Nutrition
Soil Fertility
SR Amarasinghe
University of Ruhuna
Matara and Galle, Sri Lanka
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
5
3
0.600
Soil Science
Water Pollution
Waste Management
Water resource management
Sriharan Raguraj
Tea Research Institute of Sri Lanka
Talawakelle, Sri Lanka
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
4
4
1.000
Plant Biostimulants
Soil science
Plant nutrition
Liyanage Lrmc
Tea Research Institute of Sri Lanka
Talawakelle, Sri Lanka
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
4
4
1.000
TDP Liyanage
University of Ruhuna
Matara and Galle, Sri Lanka
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
4
3
0.750
Bhanuka Gunathilake
University of Sri Jayewardenepura
Nugegoda, Sri Lanka
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
2
2
1.000
Geochemistry
Mineralogy
Water Quality
Environmental Sciences
GIS & Remote Sensing
UI Samarawickrama
University of Ruhuna
Matara and Galle, Sri Lanka
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
1
1
1.000
Soil Science
Geoinformatics