Should Ponderosa Pine Be Planted on Lodgepole Pine Sites

摘要

Repeated radiation frosts caused no apparent harm to the majority of lodgepole pine (Pinus contorta) seedlings planted on a pumice flat in south-central Oregon. For most but not all of the ponderosa pine (Pinus ponderosa Dougl.) seedlings planted with the lodgepole pine, however, damage from radiation frost resulted in reduced height growth.