Utilization of some coniferous cone extractives in the impregnation of scots pine

In different dimension and shapes in coniferous tree species, the organs, which are consisted of carpel(s) that dependent on a pintle in which seeds exist, are called cone. In some species carpels are lignified and tough like leather, but in some species carpels are pulpy. Unfortunately, cones and fruits are not evaluated in anyway except cones of yew, cypress and juniper. Uses of cones are volatile oil, syrup, production of marmalade, liquor distillation, additive and preparation of some medical preparats.In this study, the chemical compositions of Nordmann fir (Abies nordmanniana), Uludağ fir (Abies bornmülleriana), Kazdağı fir (Abies equi-trojani), Cilician fir (Abies cilicica), Oriental spruce (Picea orientalis), Lebanon cedar (Cedrus libani), Scots pine (Pinus sylvestris), Black pine (Pinus nigra), Turkish pine (Pinus brutia), Stone pine (Pinus pinea), Aleppo pine (Pinus halepensis) which are naturally grown in our country, are explored.After the hot water solution of cones was prepared, then were treated with Scots pine (Pinus sylvestris L.). The treated wood samples were buried in to the ground up to half of their length in a safety area. The durability properties of Scots pine treated with cone extractives were investigated with in-ground field test.The bending strength and compression strength parallel to the fiber were determined after in-ground field test. The obtained data were analyzed by SPSS statistical programme.The highest weight gain was found in the samples treated with Aleppo cone solution compared to the others. The solution of spruce cone had the maximum bending strength before in-ground field test. As a result of field test, the compression strength of the wood over the ground was higher than those under the ground.