Predicting Board-Foot Tree Volume from Stump Diameter for Eight Hard-wood Species in Ohio

Author Institution: School of Natural Resources, The Ohio State University ; Indiana Deaprtment of Natural Resources, Division of Forestry ; Northeastern Forest Experiment Station, Forestry Sciences LaboratoryRegression equations were developed to predict volume table values for merchantable gross volume from stump diameter for eight species of hardwood trees in south-central Ohio. Mesavage and Girard's volume tables were used to develop equations for both the Doyle and International lA log rules. Data for the study were collected in Scioto Co., Ohio. Regression equations were weighted by the inverse of estimated variances. The range in R2 was from 0.82 to 0.96. Both equations and tables are presented for each species and for combined equations

North American Maple Syrup Producers Manual: Third Edition

Since 1958 the North American Maple Syrup Producers Manual has served as a basic reference source for the production of pure maple products. This 2022 edition provides up-to-date, science-based information and recommendations relating to all aspects of the industry. The guidelines presented will help users ranging from the hobby and beginning producer level to those well-established in the industry. In addition, the information herein will benefit foresters, land managers, Extension and outreach personnel, and others aiming to provide assistance to those in the maple industry. Numerous photographs, tables, a glossary and hyperlinks to selected source materials are included