Main Title |
Comparison of Experimental Designs Used to Detect Changes in Yields of Crops Exposed to Acidic Precipitation. |
Author |
Evans, L. S. ;
Thompson, K. H. ;
|
CORP Author |
Brookhaven National Lab., Upton, NY. ;Manhattan Coll., Bronx, NY. Lab. of Plant Morphogenesis.;Corvallis Environment Research Lab., OR. |
Year Published |
1984 |
Report Number |
EPA/600/J-84/338; |
Stock Number |
PB86-103140 |
Additional Subjects |
Acidity ;
Farm crops ;
Water pollution ;
Air pollution ;
Yield ;
Exposure ;
Comparison ;
Experimental design ;
pH ;
Evaluation ;
Field tests ;
Reprints ;
Acid precipitation ;
Glycine max
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB86-103140 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
5p |
Abstract |
A comparison of experimental designs used to detect changes in yield of crops exposed to simulated acidic rain was performed. Seed yields were determined from field-grown soybeans(Glycine max) exposed to simulated rainfalls in which all ambient rainfalls were excluded by automatically moveable rainfall exclusion shelters. When all eight, 4 x 4, latin squares were used, simulated rainfalls of pH 4.1, 3.3, and 2.7 exhibited yields 10.6, 16.8, and 23.9%, respectively, below yields of plants exposed to pH 5.6. The linear component of pH treatment differences showed a highly significant decrease in yield (p<0.001). The eight latin squares analyzed as individual experiments yielded erratic conclusions. However, when all eight latin squares were combined a satisfactory evaluation can be made. The low probability value for differences among latin squares (p<0.005) indicates that field locations are a legitimate source of stratification. |
Supplementary Notes |
Prepared in cooperation with Manhattan Coll., Bronx, NY. Lab. of Plant Morphogenesis. |
Availability Notes |
Pub. in Agronomy Jnl., v76 p81-84 Jan/Feb 84. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Comparison of Experimental Designs Used to Detect Changes in Yields of Crops Exposed to Acidic Precipitation. |
PUB Date Free Form |
c1984 |
Category Codes |
2D; 68A; 68D; 98D |
NTIS Prices |
Not available NTIS |
Primary Description |
600/02 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
533918706 |
Origin |
NTIS |
Type |
CAT |