Field studies of sweet potatoes and cowpeas in response to elevated carbon dioxide. Progress report. [Ipomoea batatas; Vigna unguiculata]

Technical Report · Tue Jan 01 00:00:00 EST 1985

OSTI ID:5517261

Biswas, P K

The physiological and biochemical effects of enriched CO/sub 2/ on sweet potatoes and cowpeas were studied in open top chambers. The main task was to assemble equipment to generate test atmospheres of CO/sub 2/ in the field, using open top chambers as the basic exposure unit for studying the response of sweet potatoes and cowpeas to enriched CO/sub 2/. Plant responses to CO/sub 2/ in open top chambers have been demonstrated by several investigators in a variety of crops. This study focused on growth and development of both sweet potatoes and cowpeas at levels of CO/sub 2/ ranging from the ambient level of 354 ppM to 659 ppM. The effects of CO/sub 2/ on leaf and stem weights, stem length, leaf area, and stomatal number and conductance were studied on both species. Additional studies on sweet potatoes included the effects of CO/sub 2/ on the weight, chemical content and quality of tubers. Additional studies on cowpeas included the effects of CO/sub 2/ on the weight of seeds and rate of nitrogen fixation. 27 figs., 35 tabs. (ACR)

• Research Organization: Tuskegee Inst., AL (USA)
• DOE Contract Number: AS05-83ER60166
• OSTI ID: 5517261
• Report Number(s): DOE/ER/60166-1; ON: DE85015208
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
CARBON DIOXIDE
BIOLOGICAL EFFECTS
HERBS
PLANT GROWTH
CROPS
DOSE-RESPONSE RELATIONSHIPS
EXPERIMENTAL DATA
EXPOSURE CHAMBERS
FIELD TESTS
NITROGEN FIXATION
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
DATA
GROWTH
INFORMATION
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PLANTS
TESTING
560303* - Chemicals Metabolism & Toxicology- Plants- (-1987)