Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Effects of ozone on nitrogen fixation in ladino clover /
Author Blum, Udo.
Other Authors
Author Title of a Work
Letchworth, Michael.
CORP Author North Carolina State Univ., Raleigh. Dept. of Botany.;Environmental Research Lab., Corvallis, Oreg. Ecological Effects Research Div.
Publisher U.S. Environmental Protection Agency, Office of Research and Development, Corvallis Environmental Research Laboratory,
Year Published 1976
Report Number EPA-600/3-76-031; EPA-IAG-D5-0416; EPA-ROAP-21ALR-24
Stock Number PB-252 076
OCLC Number 15236010
Subjects Ladino clover--Effect of ozone on. ; Nitrogen-fixing plants--Effect of ozone on.
Additional Subjects Ozone ; Nitrogen fixation ; Plant growth ; Air pollution ; Plant physiology ; Nitrogen ; Calorific value ; Phenol ; Biomass ; Vegetation ; Grasses ; Leguminous plants ; Microorganisms ; Soils ; Air pollution effects(Plants) ; Clover ; Trifolium
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJAD  EPA 600/3-76-031 Region 3 Library/Philadelphia, PA 06/16/2000
EJBD ARCHIVE EPA 600-3-76-031 Headquarters Library/Washington,DC 03/17/2014
EJBD  EPA 600-3-76-031 Headquarters Library/Washington,DC 09/21/2016
EKAM  SB951.4.B58 1976y Region 4 Library/Atlanta,GA 03/18/1994
EKBD  EPA-600/3-76-031 Research Triangle Park Library/RTP, NC 07/11/2003
ELDD  EPA-600/3-76-031 NHEERL/MED Library/Duluth,MN 09/30/2005
ESAD  EPA 600-3-76-031 Region 10 Library/Seattle,WA 03/23/2010
ESBD  EPA-600-3-76-031 NHEERL/WED Library/Corvallis,OR 08/29/2017
NTIS  PB-252 076 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation vii, 22 pages : illustrations ; 28 cm.
Research was performed to determine the effects of ozone on ladino clover growth, nodulation, nitrogen fixation, nitrogen content, phenol content, energy value and root exudates. Plants were exposed once or twice to carbon-filtered air, 30 or 60 pphm ozone for 2 hrs. The effects of ozone on growth, nitrogen fixation, % nitrogen, total nitrogen and nodulation varied with age of plant and ozone concentration. Caloric content of tops (plants 4 weeks old when exposed) was reduced with two exposures of 30 or 60 pphm ozone. Root caloric content was not affected. Phenol content of tops and roots (plants 6 weeks old when exposed) was reduced with two 30 pphm ozone exposures. Clover exudates were not detectably modified by ozone exposure.
Includes bibliographical references (page 21). "March 1976."