Adaptability test of different species of Eucalyptus with the aim of increasing productivity and generating secondary income for farmers

The aim of this study was to assess the adaptability and performance of Eucalyptus species under dry weather conditions of Semnan city along with irrigation. Therefore, an experiment was conducted in 2008 in the suburb of Semnan in a randomized complete block design with three replications and nineteen treatments with a planting distance of 4*4 meters.Twenty-four seedlings were planted in each replicate and continued till 2013. Treatments included Eucalyptus species and provenances including E. camaldulensis, E. campaspe, E. largiflorens, E microtheca Fars, E. rubida sh-166, E. saligna sh-168, E. viminalis sh-168, and so on. The inventory consisted of three traits: viability percentage, total height, and collar diameter. Data were analyzed using analysis of variance (ANOVA) and Duncan test in the SPSS software.The results showed that the resistance of the species studied was different in this region, so that the species E.viminalis sh-168 was completely destroyed and the E. campaspe showed very little adaptation. The E. rubida sh-166 and E. saligna sh-168 showed low resistance. The most successful Eucalyptus species were E. camaldulensis Zh-41, E. camaldulensis 9616, E.camaldulensis Ch- 41and E. camaldulensis Sh- 41. In this research, the best provenances from the tested treatments that have been able to obtain a mean height of 10 to 11 meters within five 5 years are introduced.