Comparing the growth of Paulownia fortunei and Populus deltoides plantations under different spacing in northern Iran

Document Type : Scientific article

Authors

1 B.Sc. Forestry Graduate, Faculty of Natural Resources, University of Mazandaran

2 Assistant Prof., Faculty of Natural Resources, University of Mazandaran

3 Ph.D. Candidate, Faculty of Natural Resources, University of Mazandaran

4 Forestry Expert, Mazandaran Wood & Paper Company

Abstract

     This study was carried out to investigate poplar and paulownia’s growth under different spacing in a 5-year plantation located in Mazandaran wood and paper company’s fields in Sari-Iran. The trees were planted in three different spacing: 3×3m, 4×4m, and 5×5 m, each established in 3 replications. The quantitative parameters including DBH and Height were measured and a comparison was made between the stands height and diameter growth. Survival percentage was also calculated across the stands. The averages were statistically compared in a randomized block design in two forms: 1) two species were separately compared in their threefold spacing, and 2) two species were crossed in each spacing. Tukey’s test was used to compare the averages. Results showed a promising rate of survival over the stands. Moreover, the growth was significantly different amongst different spacing of the stands, representing the best growth in 3×3m spacing. In addition, the height of poplar was significantly more than those of paulownia, though the diameter growth assessment showed a reverse trend between the stands. 

Keywords

References

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Iranian Journal of Forest and Poplar Research
Volume 16, Issue 3 - Serial Number 33
December 2008
Pages 454-444

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