Injury and yield responses of peanuts to chronic doses of ozone in open-top field chambers

Journal Article · Sat Jan 01 04:00:00 EST 1983 · Phytopathology; (United States)

DOI:https://doi.org/10.1094/Phyto-73-551· OSTI ID:7132760

Heagle, A S; Letchworth, M B; Mitchell, C A

Peanuts were exposed during 1979 and 1980 to concentrations of ozone (O/sub 3/) that spanned those that occur in ambient air of peanut production areas in the United States. The different concentrations were obtained by adding O/sub 3/ to the air of open-top field chambers for 7 hr per day from the seedling stage to harvest. Ozone at seasonal 7-hr per day concentrations (mean concentration for 7 hr per day during the seasonal exposure period) equal to, or greater than, the ambient concentration caused foliar injury and decreased shoot and root weight for both years. Seasonal 7-hr per day O/sub 3/ concentrations in ambient air at the field site near Raleigh, NC, were 0.052 and 0.056 ppM for 1979 (131 days) and 1980 (112 days), respectively. In 1979, marketable pod weight (yield) per plant at seasonal 7-hr per day O/sub 3/ concentrations of 0.049, 0.072, and 0.096 ppM was 0, 30, and 37% less, respectively, than for control plants in chambers that received charcoal-filtered air with a seasonal concentration of 0.026 ppM O/sub 3/. In 1980, yield at seasonal O/sub 3/ concentrations of 0.056, 0.076, 0.100, and 0.125 ppM was 14, 35, 52, and 72% less, respectively, than for the control treatment (0.025 ppM). Linear regression equations using data from 1979 and 1980 predicted yield losses of 17 and 21%, respectively, at a seasonal 7-hr per day mean O/sub 3/ concentration of 0.054 ppM. 13 references, 4 figures, 2 tables.

• Research Organization: North Carolina State Univ., Raleigh
• OSTI ID: 7132760
• Journal Information: Phytopathology; (United States), Journal Name: Phytopathology; (United States) Vol. 73:4; ISSN PHYTA
• Country of Publication: United States
• Language: English

Related Subjects

500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AIR POLLUTION
ATMOSPHERIC CHEMISTRY
BIOLOGICAL EFFECTS
CHEMISTRY
CHRONIC EXPOSURE
ECOLOGICAL CONCENTRATION
OZONE
PEANUTS
POLLUTION
SEEDS
TOXICITY