Record Display for the EPA National Library Catalog


Main Title Effects of Simulated Acid Rain on Yield Response of Two Soybean Cultivars.
Author Porter, P. M. ; Banwart, W. L. ; Hassett, J. J. ; Finke, R. L. ;
CORP Author Illinois Univ. at Urbana-Champaign. Dept. of Agronomy.;Corvallis Environmental Research Lab., OR.
Publisher c1987
Year Published 1987
Report Number EPA/600/J-87/485;
Stock Number PB90-103102
Additional Subjects Soybean plants ; Farm crops ; Simulation ; Yield ; Treatment ; Sulfates ; Nitrate minerals ; Tables(Data) ; Graphs(Charts) ; Greenhouses ; pH ; Reprints ; Acid rain ; Air pollution effects(Plants) ; Glycine max
Library Call Number Additional Info Location Last
NTIS  PB90-103102 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 9p
Field experiments were conducted for 3 yrs. to determine the effects of simulated acid rain on seed yield of two soybean (Glycine max (L.) Merr.) cultivars, 'Amsoy 71' and 'Williams 82'. Plants were treated biweekly with simulated rain of pH 5.6, 4.6, 4.2, 3.8, 3.4, and 3.0. For Amsoy 71 there was a linear decrease in yield with increasing rainfall acidity for 1 of 3 yrs but no significant effects for the other two. Thus acid rain appears to reduce the yield of some soybean cultivars slightly but this effect is not consistent from year to year. Amsoy 71 and Williams 82 soybean treated with the most acidic rain, pH 3.0, resulted in average yields for the 3 yrs of the study of approximately 3% and 4% lower than the average yields for the other treatments, respectively. However, calculations from the response functions developed have shown that at current levels of rainfall acidities the effects on yield are very small. With an increase in rainfall acidity of 50% in Illinois the predicted yield decrease for Amsoy 71 and Williams 82 soybean would be less than 1%. Similarly the expected increase in yield of these cultivars would be 1% or less if acidity in the rainfall were reduced by 50%. While there may be beneficial effects of reduced S and N oxide emissions, these results suggest the resultant lower rainfall acidities are not likely to produce noticeable changes in soybean yields. (Copyright (c) 1987 ASA, CSSA, SSSA.)