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Main Title Air Quality Data Analysis System for Interrelating Effects, Standards, and Needed Source Reductions: Part 10. Potential Ambient O3 Standards to Limit Soybean Crop Reduction.
Author Larsen, R. I.; McCurdy, T. R.; Johnson, P. M.; Heck, W. W.;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab. ;Department of Agriculture, Raleigh, NC. ;North Carolina State Univ. at Raleigh. Dept. of Botany.
Publisher c1988
Year Published 1988
Report Number EPA/600/J-88/391;
Stock Number PB90-100553
Subjects Soybean plants; Plant growth; Ozone; Farm crops; Soil water; Statistical analysis; Plant physiology; Site surveys; Graphs(Charts); Time studies; Air quality; Air pollution effects(Plants)
Holdings
Library   Call Number Additional Info Location Date Modified
NTIS PB90-100553 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 03/10/1990
Collation 9p
Abstract Soybean percent crop reduction is estimated as a function of ambient O3 concentrations for each of 80 agricultural sites in the National Aerometric Data Bank (NADB) for each available year of data for years 1981-1985. Fourteen O3 concentration statistics are calculated for each of the resulting 320 site-years of data. The two statistics that correlate best with estimated crop reduction are an effective mean O3 concentration (1 percent of variance unexplained) and an arithmetic mean O3 concentration 94 percent unexplained). The worst correlation of the 14 is for the statistic used in the present O3 National Ambient Air Quality Standard, the second highest daily maximum 1-h O3 concentration (42 percent unexplained). The number of site-years for estimated percent soybean yield reductions is plotted versus increasing O3 concentrations for each of the 14 O3 statistics. A maximum crop reduction line is drawn on each plot. The lines are used to estimate (and list) potential ambient O3 standards for each of the 14 statistics that would limit soybean crop reduction at agricultural NADB sites to 5, 10, 15, or 20 percent.
Supplementary Notes Pub. in APCA Jnl., v38 n12 Dec 88. See also PB87-195376. Prepared in cooperation with Department of Agriculture, Raleigh, NC., and North Carolina State Univ. at Raleigh. Dept. of Botany.
NTIS Title Notes Journal article.
Category Codes 98D; 57C; 68A
NTIS Prices PC A02/MF A01
Primary Description 600/09
Document Type NT
Control Number 932616402
Cataloging Source NTIS/MT
Origin NTIS
Type CAT