Discover the world’s highly cited researchers through the AD Scientific Index 2025 Citation Rankings.
These rankings evaluate scientists based on their total and recent citation counts, capturing the breadth and real-time currency of academic recognition. Citation data reveals how widely a scholar’s work is referenced, applied, and extended across diverse disciplines. The rankings are routinely updated to reflect ongoing citation growth, while eliminating distortions from excessive co-authorship and institutional inflation. Premium tools provide access to detailed citation dynamics, unethical citation behavior detection, and field-normalized benchmarking.
* Total Citation Counts Rankings
Ranking Based On Selection: 1

tree germplasm
agroforestry systems
tree product marketing and extension
land health
climate chang
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,954
1,581
0.266
* Total Citation Counts Rankings
Ranking Based On Selection: 2

Value chain analysis
Enterprise developmenet
Policies and Instituion
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
908
600
0.661
* Total Citation Counts Rankings
Ranking Based On Selection: 3

Marketing of tree products
value chain analysis and innovative extension approache
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
395
171
0.433
Tony Simons
World Agroforestry (ICRAF)
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,954
1,581
0.266
tree germplasm
agroforestry systems
tree product marketing and extension
land health
climate chang
Divine Foundjem-Tita
World Agroforestry (ICRAF)
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
908
600
0.661
Value chain analysis
Enterprise developmenet
Policies and Instituion
Eddah Nangole
World Agroforestry (ICRAF)
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
395
171
0.433
Marketing of tree products
value chain analysis and innovative extension approache