Compatibility of Different Eucalyptus Species and Provenances Under Sewage Irrigation Using Yazd City Wastewater Treatment Plant Effluent

Document Type : Research Paper



Different eucalypt species have various utilizations, therefore eucalypt species trials is essential for different ecological conditions. For this reason an eucalypt species and provenances trial was conducted at Yazd City Wastewater Treatment Plant, using industrial and domestic sewage under the randomizes complete blocks statistical design with four replicates and eight treatments at 3 x 3 m. spacing and 36 seedlings in each plot. The treatments consisted of: E. rubida (166-sh), E. saligna  ig. botryoides (20762), E. saligna (171-sh), E. macarthurii (169-sh), E. viminalis (15211), E. sargentii, E. camaldulensis (41-zh), and E. microtheca. The results showed that after  the first year of planting there were significant differences between the treatments (P< 0.01) in respect to survival, height, diameter and crown parameters. The greatest survival after the first and second years of planting belonged to E. camaldulensis (41-zh), E. sargentii and E. microtheca(98.6%, 95.1%,
92.4% and 98.6%, 95.1%, 94.4%, respectively). The species E. camaldulensis (41-zh) had the best performance after the first and the second years of planting, although there was not significant difference between some of the eucalypt characteristics. Overall, the species E. camaldulensis (41-zh) can be recommended for forest plantation and wood production at sites similar to the trial condition, ecologically. The species E. rubida, E. saligna and E. viminalis are also recommended for plantation and wood production, using sewage irrigation, due to their fast growing performance, although they might have high mortality at their first stage of establishment. E. sargentii is a suitable species for desertification control due to its high resistance to soil and water salinity and somewhat coldness and its fast diameter and crown growth.


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