Stefan Gandev (PhD, DSc) is a full-time professor at the Fruit-Growing Institute in Bulgaria. He is the Director of the Institute. In the past decade he has focused his research on the walnut propagation. His scientific interests are also focused on problems related to fruit tree architecture, pruning for better fruit-bearing and organic production of fruits. He is the author of over 100 publications and three monographs. He is a member of international committees and he has chaired a number of scientific sessions in international fora.