Dr Ioannis E. Papadakis has received his PhD in Pomology from Aristotle University of Thessaloniki (Greece) in 2004. Currently, he is working as Associate Professor in Laboratory of Pomology at Agricultural University of Athens). His research interests are the following: (i) Plant nutrition and fertilization, (ii) Abiotic stresses (nutrient deficiencies and toxicities, drought, salinity, waterlogging, etc.), (iii) Sexual and asexual propagation of fruit tree species, (iv) Evaluation of fruit tree cultivars and rootstocks, (v) Effects of various cultural practices on tree yield and fruit quality, and (vi) Fruit trees physiology and biochemistry.