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    Author(s): James A. Rinehart; Richard B. Standiford
    Date: 1983
    Source: In: Standiford, Richard B; Ledig, F Thomas, technical coordinators. Proceedings of a work-shop on Eucalyptus in California, June 14-16, 1983, Sacramento, California. Gen. Tech. Rep. PSW 69. Berkeley, CA: Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture; p. 61-68
    Publication Series: General Technical Report (GTR)
    Station: Pacific Southwest Research Station
    PDF: View PDF  (143 KB)

    Description

    A study of the major Eucalyptus globulus stands throughout California conducted by Woodbridge Metcalf in 1924 provides a complete and accurate data set for generating variable site-density yield models. Two models were developed using linear regression techniques. Model I depicts a linear relationship between age and yield best used for stands between five and fifteen years old. Model II depicts a sigmoidal relationship between age and yield with slightly poorer statistical fit but greater reliability beyond fifteen years of age. Significant independent variables used in Model I are: initial plantation density; site index; and an interaction variable consisting of age x site index. Significant independent variables in Model II are: natural log of initial plantation density; site index; and in- verse age. Variable site and density yield tables are developed from Model II for stands under minimal management. Culmination of mean annual increment occurs at age ten under all conditions. Assuming a goal of maximization of mean annual increment of merchantable cordwood, planting densities of 435, 680 and 1210 trees per acre are recommended for low, medium, and high sites respectively.

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    Citation

    Rinehart, James A.; Standiford, Richard B. 1983. Growth and yield in Eucalyptus globulus. In: Standiford, Richard B; Ledig, F Thomas, technical coordinators. Proceedings of a work-shop on Eucalyptus in California, June 14-16, 1983, Sacramento, California. Gen. Tech. Rep. PSW 69. Berkeley, CA: Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture; p. 61-68

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