Schaefer, P. R., & Baer, N. W. (1992). Stability of ponderosa pine provenance: results after 21 years in eastern South Dakota. Northern Journal of Forestry, 9, 102-107.

has been cited by the following article:

• TITLE: Ponderosa Pine Seed Source Test in Nebraska in the Central Great Plains of the United States

  AUTHORS: Wayne A. Geyer, Keith D. Lynch, Peter Schaefer, William R. Lovette

  KEYWORDS: Pinus ponderosa; Provenance; Seed Source; Family; Tree Selection; Growth Characteristics

  JOURNAL NAME: Open Journal of Forestry, Vol.3 No.3, July 18, 2013

  ABSTRACT: Ponderosa pine (Pinus ponderosa Laws) has been planted widely in the Great Plains for wind breaks. A 1968 study recommended using material from south-central South Dakota and north-central Nebraska. A second test to further delineate seed sources (families) from numerous collection sites in this region was established in 1986. This paper reports results for survival, height, diameter, and D2H (diameter squared X height) measurements at 15 years. Results identify a wide range of suitable families within the region. A majority of the tested sources performed well, thus verifying the original recommendations.