Final adaptability experiment of poplar clones for introducing the most suitable clones.
2007
Modir Rahmati, Ali Reza | Gudarzi, Gholam Reza | Ziya, Azdo | Rafi`i, Zahra | Qasemi, Raf`at Ol-Lah
World increasing demand for wood production, facing the manegers and related experts to challenges with the subject. Short term exploitation and variety in production is an approach to decrease these challenges. Considering the special characteristics of poplar the plantation of it could be proper resoulation to solve such this problems. This research was carried out with the aimes of increasing wood production in unit area with collection of better and more adaptable poplar clones to climatic and edaphic condition in Markazi province. In this research 35 poplar clones(21clones in closed and 14 clones in open crown) were compared using the complete experimental block design in 3 replication. During the nursering operations, several factors includings: Tree diameter in breast hight, hight, pest and diseases, crown diameter, trunk quality, branching types, weeds, current and average and total growh were considered and recorded. SAS software also were used to data analysis and interpretation. On the basis of this investigation we concludet the followinggreater diameter and hight and volume growth were found in closed crown of Populus nigra 56.72 colones with in order 20.67(cm), 17.57(m) and 36.54(m3/ha/years). While the greater such an above parameters in open crown colones were found in Populus.euamericana cv.vernirubensis wit in order 20(cm), 13.87(m) and 19.45(m3/ha/years). The other factors in these clones also were in good condition. 77 species of weeds were identified and listed. Suitable clones included: 1-P.n.56.72, 2- P.n.72.19, 3-P.n.72.5 4-P.n.betulifolia, 5-P.e.vernirubensis and 6-P.e.455 also were recognized and introduced to related executive section in order to development and extending the poplar planting area of Markazi province.
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