Clone trials of Eucalyptus camaldulensis and Eucalyptus grandis and their hybrids: five-year-old results

In this study, it is aimed to compare the clones of Eucalyptus camaldulensis and Eucalyptus grandis and their hybrids in terms of growth and survival. The clones were tested in four different sites. Seedlings were planted at spacing of 3.25x3.25m in a Randomized Block Design. Each clone was represented by a total of 25 seedlings. There were statistically significant differences between clones in terms of growth and survival in all of the trial sites. As a result of evaluating the volume growth and survival together; in Karabucak and Ceyhan conditions, CG96 and in Kırıkhan conditions C298 clone had the highest values. In the joint analysis of the trial sites, except for Kırıkhan which had fewer living clones, a statistically significant difference was found between the three trial sites regarding growth and survival. Concerning these variables, Karabucak-111 had higher values than the other trial sites. It was also found that there was a statistically significant difference between clones; and G96 clone had the highest values especially regarding growth and took place on the top. The results show that more productive industrial plantations can be achieved with the use of the outstanding clones identified for each region. Three hybrid clones (M77, M85 and M46) were found to be promising although there were no hybrid clones exceeding the pure species in terms of growth, in all the trial sites at age of 5 years.