Virginia Department
of Forestry

DOF is part of the Longleaf Cooperators of Virginia working together to conserve and restore longleaf pine in its native range of southeast United States. Report summarizes the 2020 range-wide accomplishments of America’s Longleaf Restoration Initiative.

Research reports and updates from ongoing DOF studies. In this issue: longleaf pine establishment methods, shortleaf pine establishment methods, American chestnut backcross breeding, white pine seedling handling and competition control methods, loblolly pine release tank mixes and surfactants, epicormic branching of white oak, and northern red oak planting.

Research reports and updates from ongoing DOF studies. In this issue: the loblolly pine tree improvement program, competition control for shortleaf pine establishment, competition control for white pine establishment, pruning methods for urban trees, white oak crop tree release, tree-of-heaven control methods, yellow-poplar thinning response, and northern red oak planting.

Research reports and updates from ongoing DOF studies. In this issue: row orientation in loblolly pine growth, fertilizer x planting density effects on loblolly pine growth, varietal vs. open-pollinated loblolly pine, North Carolina and South Carolina families of loblolly pine in VA, longleaf pine establishment methods, longleaf pine provenances, biosolids for fertilizing loblolly pine, interplanting loblolly pine, and southern red oak crop tree release and fertilization.

Research reports and updates from ongoing DOF studies. In this issue: loblolly pine seed orchard management strategies, advances in pine plantation silviculture, longleaf pine grafting methods, competition control for shortleaf pine establishment, tip moth control methods for loblolly pine, tree-of-heaven control methods, and northern red oak planting.

Research reports and updates from ongoing DOF studies. In this issue: potential for continued loblolly pine tree improvement, effects of thinning and fertilization in loblolly pine, American chestnut breeding program, longleaf pine provenance study, biosolids for fertilizing loblolly pine, interplanting loblolly pine, tip moth control methods for loblolly pine, and southern red oak crop tree release and fertilization.

Research reports and updates from ongoing DOF studies. In this issue: loblolly pine site index, stem sinuosity in loblolly pine, longleaf pine establishment methods, American chestnut, effects of competing hardwoods on loblolly pine, white pine competition control and storage time, tip moth control methods for loblolly pine, white oak crop tree release and fertilization.

Research reports and updates from ongoing DOF studies. In this issue: thinning and fertilization in mid-rotation loblolly pine, loblolly pine planting spacing, biosolids for fertilizing loblolly pine, timing of hardwood control in loblolly pine, longleaf pine provenance comparison, and white oak crop tree release.

Research reports and updates from ongoing DOF studies. In this issue: effects of pruning in loblolly pine, effects of planting density and fertilizer on loblolly pine growth, varietal vs open-pollinated loblolly pine, biosolids for fertilizing loblolly pine, shortleaf pine provenance test, interplanting loblolly pine, tree shelter comparison for red oak in riparian buffers, crop tree release and fertilization of white oak and southern red oak.

Research reports and updates from ongoing DOF studies. In this issue: fourth cycle loblolly pine tree breeding, spacing impacts on loblolly lumber quality, fertilizer fate and carbon sequestration in loblolly pine, logging slash for skid trail stabilization, longleaf pine provenances, growth and value of low-density loblolly pine plantations, projected value of interplanted loblolly pine, biosolids for fertilizing loblolly pine, growth and value of loblolly pine after site prep vs. release, hardwood plantations in central VA, tree shelters for northern red oak

Report provides a brief history of longleaf pine in Virginia, the original range of longleaf pine, longleaf and fire, the search for native longleaf pine, the case for conserving and restoring Virginia’s longleaf pine, the importance of Northern-source seedlings for longleaf pine restoration, seed collection and seedling production, orchard development, where we are restoring longleaf pine, special programs available to promote the restoration effort, and future goals and challenges. Printed copies available.

Report summarizes field data gathered in Orange County, VA in shortleaf and loblolly pine plantations.

Report provides growth data from a 1937 Buckingham County plantation containing both loblolly and shortleaf pine that was thinned at age 19 and again at age 24, providing evidence of the more rapid growth of loblolly pine.

Report provides first-year results of a study to test spot seeding as a method of establishing loblolly, Virginia and shortleaf pine on cutover land.

Report summarizes a three-year study of planting survival of loblolly, shortleaf and white pine, including more than 3,300 different plantings.

Report provides results of a 1967 study to compare flowering dates of the different genetic lines of loblolly and shortleaf pines in the DOF seed orchard at that time.

Report summarizes yield data from 57 shortleaf pine stands in 40 different plantations in 25 different piedmont and mountain counties.

Report provides an update on the effects of planting date on longleaf pine survival in Virginia.

Report provides 10-year results from a study comparing the survival and growth of longleaf pine seedlings from Alabama, Florida, Georgia, Mississippi, North Carolina (two sources), South Carolina, and Virginia. Primarily due to earlier growth initiation and better survival, the Virginia source produced significantly more volume per acre and ranked higher in fitness score than the other provenances.

Report provides results from three locations of a study of competition control and fertilizer treatments for establishing shortleaf pine on old-field and cutover sites. Herbaceous weed control (using herbicides or mechanical scalping) at the beginning of the first growing season improved survival and growth of planted shortleaf pine on both old field and cutover sites after two years.

Report provides results from a study of the effects of seedling source (NC orchard mix, GA mountain and GA coastal), competition control methods and planting depth on the establishment and early growth of longleaf pine on an old-field site. Five-year results show that the most important factor in  establishment success was scalping. Shallow planting and Oustar at 8 -12 oz./acre were also helpful. 

Forestry topic information sheet encourages the preservation of the native species longleaf pine, including the history of longleaf, why preserve longleaf, DOF’s longleaf research, native Virginia longleaf, and cost-share programs available. Printed copies available.