Influence of plant maturity on the sensitivity of turfgrass species to ozone

Journal Article · Mon Dec 31 23:00:00 EST 1979 · J. Environ. Qual.; (United States)

DOI:https://doi.org/10.2134/jeq1980.00472425000900010013x· OSTI ID:5407267

Richards, G A; Mulchi, C L; Hall, J R

The increased prevalence of phytotoxic levels of oxidants during inversions in urban regions prompted an evaluation of the sensitivities of turf species to different doses of ozone at several stages of plant development. Warm and cool season turfgrass species and cultivars were exposed in fumigation chambers to various concentrations of ozone then scored for vegetative damage. The warm season entries Meyer zoysiagrass (Zoysia japonica Steud.) and Tufcote bermudagrass (Cynodon doctylon L., Pers.) exhibited greater tolerance to ozone than the cool season entries which included tall fescue (Festuca arundinaceae Schreb), perennial ryegrass (Lolium perenne L.), bentgrass (Agrostic paulustris Huds.), red fescue (Festuca rubra L.), Kentucky bluegrass (Poa pratensis L.), and annual bluegrass (Poa annua L.). The cool season grases which exhibited the highest and lowest tolerance to ozone were Merion Kentucky bluegrass and annual bluegrass, respectively. Increasing the ozone exposure from 3.5 to 7.0 hours/day for 5 days at 0.1 ppM caused twice the level of vegetative damage. As a group, seedlings 9 to 14 days of age exhibited greater susceptibility and uniformity in treatment response than seedlings 66 to 71 days of age to ozone exposures of 0.3 to 0.5 ppM for 3 hours.

• Research Organization: Maryland Agriculture Experimental Station, College Park
• OSTI ID: 5407267
• Journal Information: J. Environ. Qual.; (United States), Journal Name: J. Environ. Qual.; (United States) Vol. 9:1; ISSN JEVQA
• Country of Publication: United States
• Language: English

Related Subjects

560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AGE DEPENDENCE
BIOLOGICAL EFFECTS
DATA
DATA FORMS
DOSE-RESPONSE RELATIONSHIPS
EVALUATED DATA
GRASS
INFORMATION
NUMERICAL DATA
OZONE
PHOTOCHEMICAL OXIDANTS
PLANTS
SEASONAL VARIATIONS
SEEDLINGS
SENSITIVITY
TABLES
TOLERANCE
TOXICITY
URBAN AREAS
VARIATIONS