INVESTIGATION ON THE STEM QUALITY OF PINUS BRUTIA INDIVIDUALS GROWN FROM HEALTY TREES WITH POOR STEM QUALITY

Abstract

Natural mature brutian pine (Pinus brutia Ten.) stands are generally composed of individual trees with poor stem quality owing to fact that they have not been managed by a proper thinning programme. An expectation gains weight as to whether the undesirable trails will carry in the new generation to be established by using the seed obtained from those of trees with poor stem form. The present investigation was commenced in 1986 in order to study this problem. 1+0 seedlings grown by generative and vegetative methods from the Suleyman Demirel Universitesi Orman Fakultesi Dergisi Seri: A, Sayi: 2, Yil: 2001, ISSN: 1302-7085, Sayfa:11-26 12 healty trees with good crown structure but poor stem form were planted in autumn,1987 to carry out the experiments. Assesments were made in 1994 after the individuals are attained a certain height and form at 7 year of age. But, time was too early for reliable result on this subject. Final report was not published that time, therefore. In the spring of 2001 observations clearly showed that the sceptical topic mentioned above is not justified and a new generation composed of high quality young individuals may be regenerated by the readily available seed supply from the old generation with poor stem form. Keywords : Pinus brutia stands, regeneration, individuals with poor stem form.