A Seed Source Study of Ponderosa Pine for the Great Plains Region
Conifers give permanence and greater winter effectiveness to shelterbelts. One of the most promising conifers in the Great Plains region, according to past experience, is ponderosa pine (Pinus ponderosa Laws). But survival is variable, spotty, and often quite low. Also, form, growth rate and resistance to insects and diseases vary between trees and races. Since some of this variability may reflect origin, a study has been initiated to test the adaptability of various seed sources of ponderosa pine for shelterbelt use in the Great Plains Region.
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Author(s): David H. Dawson
Publication: Tree Improvement and Genetics - Central States Forest Tree Improvement Conference - 1964