Elimination trial with six tree species in Korbal plain and ‎effects of drainage water on their growth

Document Type : Research article

Authors

1 Scientific Board Member, Fars Agricultural and Natural Resources Research Center, Shiraz, I. ‎R. Iran

2 Forest Research Expert, Fars Agricultural and Natural Resources Research Center, Shiraz, I. ‎R. Iran.‎

Abstract

The aim of the study was to investigate the adaptability of six native and exotic tree species at Korbal plain, Shiraz, I. R. Iran and the effects of drainage water on their growth and survival. The experiment design was split plots with three replicates. The main plots consisted of salty and ordinary water, supplied by drainage channels and Kor river, respectively. The subplots consisted of six species, including Eucalyptus camaldulensis Dehn, E. microtheca F. Muell., Acacia stenophylla, Fraxinus rotundifolia Miller. Populus euphratica Oliv.and Tamarix aphylla (L.) Karst.The results showed that the effects of irrigation treatments on survival and growth were not significant at first year of the trial. Resistance of the E. camaldulensis, species E. microtheca, A. stenophylla and T. aphylla to salinity and drought was good, whereas the resistance of F. rotundifolia to both environment conditions was not good and resistance of P. euphratica to salinity was excellent, but its resistance to drought was low. The tolerance of the species, E. camaldulensis, A. Stenophylla, E. microtheca and T. aphylla to frost (-9ºc) at the first year of the trial was low and the crown damage percentage was 80.8, 100, 31-6 and 97.1, respectively. E. microtheca was the most tolerant species due to its highest percentage of survival (88.3) at the end of the trial. The irrigation with drainage water had remarkable effects on tree growth and survival, particularly at summer.

Keywords

References

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