Effects of photochemical oxidants on radial growth increment for five species of conifers in the San Bernardino National Forest

Journal Article · Sat Dec 01 00:00:00 EST 1979 · Plant Dis.; (United States)

OSTI ID:5553348

Ohmart, C P; Williams, Jr, C B

Conifers on six vegetation plots - two sustaining severe visual oxidant injury to coniferous tree foliage, two exhibiting moderate foliar injury, and two indicating slight or no injury to foliage - were examined for loss of radial growth increment due to oxidant exposure in the San Bernardino National Forest. Five coniferous species were examined: Pinus ponderosa, P. jeffreyi, P. lambertiana, Abies concolor, and Libocedrus decurrens. P. ponderosa and A. concolor growing on the two heavily injured plots showed significant reductions in radial growth increment, whereas L. decurrens showed no response. P. jeffreyi and P. lambertiana did not occur on the heavily injured plots. Conifers on the other four plots exhibited no growth response to oxidant exposure. 7 references, 6 figures, 1 table.

• Research Organization: Univ. of California, Berkeley
• OSTI ID: 5553348
• Journal Information: Plant Dis.; (United States), Vol. 63:12
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
CONIFERS
INJURIES
PLANT GROWTH
OZONE
BIOLOGICAL EFFECTS
PHOTOCHEMICAL OXIDANTS
COMPARATIVE EVALUATIONS
INHIBITION
SAN BERNARDINO MOUNTAINS
GROWTH
MOUNTAINS
PLANTS
560303* - Chemicals Metabolism & Toxicology- Plants- (-1987)