CLONAL AVOCADO (Persea Americana Mili.) ROOTSTOCKS IN ISRAEL

Clonal avocado rootstocks were developed In Israel on a small scale between the years 1962 to 1977 and on a large scale In the years following. During the entlre period about 220 dlfferent rootstocks have been developed In an attempt to solve 5011 problems caused by stress factors such as salinity, lime, poor aeratlon and root-rot, and various comblnations of these factors, whlle slmultaneously Improvlng productlvity. Unlformlty among trees and dwarfness were also taken into account as part of the search for better rootstocks. The development process included fleld evaluatlon on a very large scale, In which 350 experiments and 65000 trees took part.