RNGR.net is sponsored by the USDA Forest Service and Southern Regional Extension Forestry and is a colloborative effort between these two agencies.

U.S. Department of Agriculture USDA Forest Service Southern Regional Extension Forestry Southern Regional Extension Forestry

Skip to content. | Skip to navigation

Home → Publications → Tree Improvement and Genetics → North Central Tree Improvement Conference → 3rd North Central Tree Improvement Conference (1983) → Performance of black walnut provenances after 15 years in 7 midwestern plantations