Ozone and sulfur dioxide effects on tall fescue. II. Alteration of quality constituents. [Festuca arundinacea]

Journal Article · Tue Jan 01 04:00:00 EST 1985 · J. Environ. Qual.; (United States)

DOI:https://doi.org/10.2134/jeq1985.00472425001400040002x· OSTI ID:6134676

Flagler, R B; Youngner, V B

A greenhouse study was conducted to determine whether ozone (O/sub 3/) and sulfur dioxide (SO/sub 2/) might alter forage quality parameters of tall fescue (Festuca arundinacea Schreb. Alta). Plants were exposed weekly to four O/sub 3/ treatments, 0, 0.10, 0.20, and 0.30 ..mu..L L/sup -1/; with or without 0.10 ..mu..L L/sup -1/ SO/sub 2/, 6 h d/sup -1/ for 12 weeks. Ozone had a much greater impact on forage quality than did SO/sub 2/. Ozone increased protein content on a g kg/sup -1/ basis and decreased protein on a weight per plant basis. Ozone reduced crude fat, crude fiber, and total nonstructural carbohydrate contents of the forage. Crude ash content increased due to O/sub 3/ exposure. On a weight per plant basis, O/sub 3/ decreased the forage concentration of Ca, Mg, and P. Ozone increased Ca concentration of herbage. Sulfur dioxide increased ash content of the forage. Phosphorus concentration and weight per plant of Mg and P were all reduced by SO/sub 2/ Significant pollutant interactions occurred for crude fiber, crude ash, total Mg, and total P contents of forage. While treatments resulted in some apparent increases in forage quality, these were at the expense of yield. The most adverse effects on forage quality were an increase in ash content which resulted from an interaction of SO/sub 2/ with O/sub 3/, and a reduction in soluble carbohydrate content of shoots due to O/sub 3/.

• Research Organization: North Carolina State Univ., Raleigh
• OSTI ID: 6134676
• Journal Information: J. Environ. Qual.; (United States), Journal Name: J. Environ. Qual.; (United States) Vol. 14:4; 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.
AIR POLLUTION
ALKALINE EARTH METALS
ANIMAL FEEDS
BIOLOGICAL EFFECTS
CALCIUM
CHALCOGENIDES
CHEMICAL COMPOSITION
ELEMENTS
FATS
FOOD
FORAGE
GRASS
MAGNESIUM
METALS
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
OZONE
PHOSPHORUS
PLANTS
POLLUTION
PRODUCTIVITY
PROTEINS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES