Abstract Growth functions were developed for eight hardwood forest site types. Net value of these stands was determined by subtracting harvesting costs from mill-delivered value. A "marginalistic" adaption of the Faustmann formula was used to determine financial maturity at three different interest rates. Financial rotation ages ranged from 19 to 26 years at 6 percent interest, and annual return to the site ranged from 0. 63 to 2. 02 per acre. These returns yielded after tax rates of return from 1. 57 to 3. 96 percent on investment in both timber and land.
Richard L. Porterfield (Sun,) studied this question.