Document Type : Original Article
Authors
- Hanieh Shahghobadi 1
- Sanam Sharifi Tabesh 1
- Vahid Etemad 2
- Mohsen Javanmiri pour 3
- Aoushirvan Shirvany 1
- Mohammad Matinizadeh 4
1 University of Tehran
2 Faculty of Natural Resources, University of Tehran
3 Natural Resources and Watershed Organization of the country
4 Research institue
Abstract
300 seedlings of Eucalyptus and 300 seedlings of useful hybrid Poplar were planted in the lands of Pars Paper Industries Company located around Shush County in Khuzestan Province. Eucalyptus and useful hybrid Poplar seedlings were planted in completely randomized block design with three different treatments including animal manure, mycorrhiza, processed fertilizer, and control treatment with a spacing of 3×3 meters, with three replications, and in each replication, 25 seedlings were planted in plots with an area of 225 m2. Approximately one hectare in a way that there was a four-meter distance between each adjacent plot. After planting the seedlings, the first step was to measure quantitative characteristics including collar diameter (with millimeter precision) using calipers and seedling height using a Bloom Lays device (with centimeter precision). After the end of the first growth period, annual measurements were repeated. The duration of the research is 3 years. In Eucalyptus, the bio-fertilizer treatments had a 100% survival rate, whereas in the control treatment, 97.3% of the seedlings survived. In useful hybrid Poplar, the highest survival rate belonged to the mycorrhiza treatment with 94.7%, while the processed fertilizer treatment had the lowest survival rate (80%). Comparing the mean collar diameter growth for the useful hybrid Poplar species indicated a significant difference at the 5% level. The maximum collar diameter growth was observed in the animal manure treatment (72.2 mm), while the minimum was recorded in the control treatment (22.2 mm).
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