| Main Title |
Correlations Between Canopy Reflectance and Leaf Temperature in Irrigated and Droughted Soybeans. |
| Author |
Cure, W. W. ;
Flagler, R. B. ;
Heagle., A. S. ;
|
| CORP Author |
North Carolina State Univ. at Raleigh. ;Texas Agricultural Experiment Station, College Station.;Corvallis Environmental Research Lab., OR. |
| Publisher |
c1989 |
| Year Published |
1989 |
| Report Number |
EPA/600/J-89/411; |
| Stock Number |
PB90-245846 |
| Additional Subjects |
Soil moisture ;
Soybean plants ;
Leaves(Botany) ;
Reflectance ;
Canopies ;
Irrigation ;
Atmospheric temperature ;
Infrared radiation ;
Stress(Physiology) ;
Reprints ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB90-245846 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
10p |
| Abstract |
Effects of water stress on soybeans were characterized over a 4-day period in well-watered (WW) and water-stressed (WS) plots by measurements of leaf temperature, air temperature, and canopy reflectance. The objectives were to assess canopy reflectance as an indicator of drought stress in soybean and to determine if canopy reflectance could be predicted from leaf temperature. Reflectance from the WS plants was greater in the red portion of the visible spectrum and less at near-infrared wavelengths. Correlation coefficients with the reflectance measurements were generally greater with leaf temperature than with either the air temperature within the canopy or the differential between leaf and air temperatures. Coefficients of determination in excess of 0.8 could be obtained for models predicting either red or near-infrared reflectance as a function of leaf temperature by excluding those measurements taken shortly after irrigations. Plant size strongly affected model parameters. (Copyright (c) Elsevier Science Publishing Co., Inc. 1989.) |
| Supplementary Notes |
Pub. in Remote Sensing of Environment, v29 p273-280 1989. Prepared in cooperation with Texas Agricultural Experiment Station, College Station. Sponsored by Corvallis Environmental Research Lab., OR. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Correlations Between Canopy Reflectance and Leaf Temperature in Irrigated and Droughted Soybeans. |
| Category Codes |
98D |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/02 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
024228391 |
| Origin |
NTIS |
| Type |
CAT |
