Scientists & Staff

Jerry Van Sambeek

J.W."Jerry" Van Sambeek

Notes: This person is no longer an employee of the Northern Research Station.

Featured Publications & Products

Publications & Products

Other Publications

  • Van Sambeek, J.W.  1986-2009. Annotated Black Walnut Literature.  Walnut Council Bulletin.  Volumes 13-36.

National Research Highlights

Figure 1.—Overview of Shade Tolerance Laboratory for growing and evaluating forage productivity and quality of grasses and legumes under three light intensities (0, 45, and 20 percent of full sunlight) in the absence of competition from tree roots.  Credit?
Figure 2.—Jerry Van Sambeek, an USDA Forest Service research plant physiologist, examines growth of Virginia wildrye grass grown in an outdoor structure covered by shade cloth to evaluate effects of dense shade (20% full sunlight) on forage production and quality.

Selecting the right shade-tolerant forages for restoring savannas or woodlands and implementing different agroforestry practices

Year: 2017

Establishing ground covers is a common practice used in agroforestry, silvopasture (combining forestry with grazing), and savanna and woodland restoration efforts. Forest Service scientists investigated the importance of shade tolerance when selecting legumes and grasses for these efforts.

Fourteen-year-old oaks planted as repeatedly air-root-pruned container stock on mounds on a frequently flooded site high in clay with poor internal drainage. Jerry Van Sambeek, U.S. Department of Agriculture Forest Service.

Repeatedly Air-Root-Pruned Container Stock Out-performs Bare-root Planting Stock after 10 Years

Year: 2016

Repeated exposure of tree roots to air, known as air-root-pruning, provides swamp white oak seedlings that continues to out-perform nursery bare-root planting stock after 10 years.

Last modified: Monday, February 6, 2017