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RECORD NUMBER: 5 OF 152

OLS Field Name OLS Field Data
Main Title Alternative Ozone Dose Metrics to Characterize Ozone Impact on Crop Yield Loss (Journal Version).
Author Rawlings, J. O. ; Lesser, V. M. ; Heagle, A. S. ; Heck, W. W. ;
CORP Author North Carolina State Univ. at Raleigh. ;North Carolina Agricultural Research Service, Raleigh.;Corvallis Environmental Research Lab., OR.
Publisher c1988
Year Published 1988
Report Number EPA/600/J-88/251;
Stock Number PB89-151492
Additional Subjects Ozone ; Exposure ; Farm crops ; Air pollution ; Soybean plants ; Solar radiation ; Concentration(Composition) ; Dosage ; Mathematical models ; Response ; Seasonal variations ; Yield ; Tobacco plants ; Environmental impacts ; Tables(Data) ; Reprints ;
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB89-151492 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/08/1989
Collation 9p
Abstract
Previous studies of the National Crop Loss Assessment Network (NCLAN) relating the impact of ozone (O3) on agricultural crops have used the seasonal arithmetic average of O3 for either a 7- or 12-h daily period as the measure of dose in the dose response relationships. The study investigated the use of alternative dose metrics that gave differential weighting to hourly O3 concentrations according to level of O3, period of day, or total hourly solar radiation. Data were used from two NCLAN studies in which two different methods of O3 addition were used for 7 h/d. In addition, one study included 12 h/d exposure for one method of O3 addition. The residual sums of squares from fitting a common Weibull response model to each experiment were compared over the range of dose metrics. Weighting by total hourly solar radiation gave results very similar to the best obtained from differential peak-valley weighting and 7 h:5 h weighting.