Smog injury, root diseases and bark beetle damage in ponderosa pine
Photochemical oxidants (smog) are causing serious injury to ponderosa pine in the San Bernardino Mountains of southern California. Apparently, smog injury also renders the trees more susceptible to attack by two species of destructive forest insects, the western pine beetle, Dendroctonus brevicomis,...
| Published in: | California Agriculture |
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| Main Authors: | , |
| Format: | Article |
| Language: | English |
| Published: |
University of California Agriculture and Natural Resources
1969-09-01
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| Online Access: | https://californiaagriculture.org/article/112530-smog-injury-root-diseases-and-bark-beetle-damage-in-ponderosa-pine |