Sarıçam (Pinus sylvestris L.) Gelişimi Üzerine Ökseotu’nun Etkisi

Aim of this study is to investigate of effect of mistletoe (Viscum album) on growth of Scotch pine. The measurements were done on the pure Scotch pine stands of Kocimek locality (Golbasi village, Uzundere town, Erzurum province, Turkey). Diameter, double bark thickness, tree-rings and height was measured a total of 60 trees. 30 of them are infested with mistletoe and the others are without mistletoe. To investigate how does mistletoe affects annual tree diameter increment, height growth and double bark thickness, the SPSS package program was used. We tested all data for normal distribution at first. After that, we used paired samples t-test. As a result of this test mistletoe have unfavorable affected diameter increment, double bark thickness and height growth of Scotch pine. The annual diameter increment of Scotch pine trees were reduced by about 40% within 10 years, the height growth of these trees were reduced by about 47% and the double bark thickness of these trees reduced by about 25%.