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RECORD NUMBER: 47 OF 230

OLS Field Name OLS Field Data
Main Title Effects of CO2 on Competition between Rice and Barnyardgrass.
Author Olszyk, D. M. ; Ranasinghe., L. L. ;
CORP Author Corvallis Environmental Research Lab., OR. ;Oregon State Univ., Corvallis.
Publisher 1994
Year Published 1994
Report Number EPA/600/A-94/048;
Stock Number PB94-159258
Additional Subjects Carbon dioxide ; Rice plants ; Production ; Air pollution effects ; Ecosystems ; Photosynthesis ; Weeds ; Experimental design ; Tests ; Response ; Competition ; Density(Mass/volume) ; Reprint ; Barnyardgrass
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB94-159258 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 09/01/1994
Collation 5p
Abstract
The atmospheric CO2 concentration is increasing. Effects of elevated CO2 on rice production could occur not only through direct impacts to rice, but also indirectly via ecosystem responses. Changed competitiveness with elevated CO2 could occur between rice which has the C3 type of photosynthesis vs. barnyardgrass (a serious weed in rice fields) which exhibits C4 photosynthesis, as has been resported for other plants. Thus, preliminary experiments were conducted to test the hypothesis that the C3 crop rice and the C4 weed barnyardgrass respond differently to CO2, affecting competition between them when grown at different relative densities in the same container.