Potential effects of global atmospheric CO2 enrichment on the growth and competitiveness of C3 and C4 weed and crop plants

Journal Article · Tue Jan 01 04:00:00 EST 1980 · Weed Sci.; (United States)

OSTI ID:6709716

Patterson, D T; Flint, E P

Research report: Mathematical growth analysis techniques were used to determine the effects of carbon dioxide on the growth and biomass partitioning in corn (zea mays), itchgrass (Rottbiellia exalata concentrations of 350 ppM, 600 ppM, and 1000 ppM were considered. Dry matter production in soybean and velvetleaf was increased significantly by raising the CO2 concentration above 350 ppM. Dry matter production in itchgrass was greatest at 600 ppM; CO2 levels did not affect dry matter production in corn. Weed growth with each plant at the various CO2 concentrations was also measured. CO2 enrichment increased weed growth in weeds planted with soybean and velvetleaf; weeds planted with corn and itchgrass did not experience any significant increase in growth. (18 references, 4 tables)

• Research Organization: USDA
• OSTI ID: 6709716
• Journal Information: Weed Sci.; (United States), Journal Name: Weed Sci.; (United States) Vol. 28:1; ISSN WEESA
• 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.
BIOLOGICAL EFFECTS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CEREALS
CHALCOGENIDES
ECOLOGICAL CONCENTRATION
FOOD
GRAMINEAE
GRASS
GROWTH
MAIZE
OXIDES
OXYGEN COMPOUNDS
PLANT GROWTH
PLANTS
PRODUCTIVITY
SOYBEANS
VEGETABLES
WEEDS