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    Yield and internal rate of return analysis for Karacabey industrial afforestation investment
    ([TR] Orman Genel Müdürlüğü, 2020) Erkan, Neşat; Ok, Kenan; Parlak, Salih
    Supply deficit of timber raw material needed by Turkish forest industry has been one of the important issues discussed for years. However, certain issues such as length of rotation period and economic result of the plantation need to be cleared, notably for private sector. With this study, Bursa-Karacabey plantation, which were established by Industrial Tree Farming Commercial Anonym Company (ENAT) using Pinus pinaster Ait. in 493 hectare area was evaluated as case study. Study was based on the stem and stand growth analyses and measurement in 15 sample plots taken from study area. Internal Rate of Return (IRR) was used for economic analyses. Results showed that the area was good sites (I. and II. class for the five classification) for P. pinaster and mean annual growth per hectare can reach up to 20 m3 in good sites at 12 years old. IRR’s were calculated up to 12,263%, however, it changed depending on length of rotation period and 6 land ownership options. IRR was calculated as 11,183% for the option of 16 years of rotation period and the lands allocated by state to companies for afforestation, which is common way for land supply system used by private companies. Additionally, we found that length of rotation periods determined using IRR were 15-16 years for 5 different land supply options with an exception.