Record Display for the EPA National Library Catalog

RECORD NUMBER: 403 OF 2620

OLS Field Name OLS Field Data
Main Title Canopy Reflectance of Soybean as Affected by Chronic Doses of Ozone in Open-Top Field Chambers.
Author Cure, W. E. ; Nusser, S. M. ; Heagle., A. S. ;
CORP Author North Carolina State Univ. at Raleigh. ;Iowa State Univ., Ames. Dept. of Statistics.;Corvallis Environmental Research Lab., OR.
Publisher c1988
Year Published 1988
Report Number EPA/600/J-88/516;
Stock Number PB90-232323
Additional Subjects Reflectance ; Soybeans ; Ozone ; Optical measurement ; Yield ; Plant growth ; Estimates ; Field tests ; Reprints ; Air pollution effects(Plants) ; Dose response relationships
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB90-232323 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 08/27/1990
Collation 8p
Abstract
The relationship between canopy reflectance and ozone (O3) treatment was investigated in a field experiment with soybean growing in 3-m diameter, 2.4-m high open-top exposure chambers. The objectives were to develop an understanding of the pattern of reflectance changes induced by this air pollutant and to investigate how the changes might ultimately be related to yield. Correlations were obtained between the reflectance data and visual estimates of non-green leaf area, a widely-used technique for rating pollutant injury. Analysis of reflectance spectra taken in early September, early October, and mid-October showed O3 treatments to be highly correlated with reflectances at visible wavelengths and at near-infrared wavelengths up to about 720 nm. Early leaf senescence caused by O3 was easily measured by reflectance changes. (Copyright (c) 1988 American Society for Photogrammetry and Remote Sensing.)