**2. Susceptibility to biotic stresses**

Many studies reported in this paragraph have been carried out in two experimental olive groves 20-years old located in Calabria, South Italy, where hundreds of cultivars coming from around the world grow in the same pedoclimatic conditions and permitted us to produce useful data for comparing susceptibility to biotic stresses.

© 2012 Iannotta and Scalercio, licensee InTech. This is an open access chapter distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. © 2012 Iannotta and Scalercio, licensee InTech. This is a paper distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
