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Evaluation of different approaches for estimating and mapping crop water status in cotton with thermal imaging
Year:
2010
Source of publication :
precision agriculture (source )
Authors :
Alchanatis, Victor
;
.
Cohen, Shabtai
;
.
Cohen, Yafit
;
.
Moeller, Markus
;
.
Sela, Eitan
;
.
Volume :
11
Co-Authors:
Alchanatis, V., Institute of Agricultural Engineering, ARO, The Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Cohen, Y., Institute of Agricultural Engineering, ARO, The Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Cohen, S., Institute of Soil, Water and Environmental Sciences, ARO, The Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Moller, M., Institute of Soil, Water and Environmental Sciences, ARO, The Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Sprinstin, M., The J. Blaustein Institute for Desert Research, Ben-Gurion University of the Negev, Sede-Boker Campus, 84990 Beersheba, Israel
Meron, M., Galilee Technology Center, Migal, P.O. Box 90000, Rosh Pinna 12100, Israel
Tsipris, J., Galilee Technology Center, Migal, P.O. Box 90000, Rosh Pinna 12100, Israel
Saranga, Y., Faculty of Agriculture, The Hebrew University of Jerusalem, Jerusalem, Israel
Sela, E., Institute of Agricultural Engineering, ARO, The Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel, Faculty of Agriculture, The Hebrew University of Jerusalem, Jerusalem, Israel
Facilitators :
From page:
27
To page:
41
(
Total pages:
15
)
Abstract:
Canopy temperature has long been recognized as an indicator of plant water status, therefore, a high-resolution thermal imaging system was used to map crop water status. Potential approaches for estimating crop water status from digital infrared images of the canopy were evaluated. The effect of time of day on leaf temperature measurements was studied: midday was found to be the optimal time for thermal image acquisition. Comparison between theoretical and empirical approaches for estimating leaf water potential showed that empirical temperature baselines were better than those obtained from energy balance equations. Finally, the effects of angle of view and spatial resolution of the thermal images were evaluated: water status was mapped by using angular thermal images. In spite of the different viewing angles and spatial resolution, the map provided a good representation of the measured leaf water potential. © Springer Science+Business Media, LLC 2009.
Note:
Related Files :
infrared imagery
Infrared thermography
mapping method
remote sensing
temperature profile
water stress
Show More
Related Content
More details
DOI :
10.1007/s11119-009-9111-7
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
21260
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:42
Scientific Publication
Evaluation of different approaches for estimating and mapping crop water status in cotton with thermal imaging
11
Alchanatis, V., Institute of Agricultural Engineering, ARO, The Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Cohen, Y., Institute of Agricultural Engineering, ARO, The Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Cohen, S., Institute of Soil, Water and Environmental Sciences, ARO, The Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Moller, M., Institute of Soil, Water and Environmental Sciences, ARO, The Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Sprinstin, M., The J. Blaustein Institute for Desert Research, Ben-Gurion University of the Negev, Sede-Boker Campus, 84990 Beersheba, Israel
Meron, M., Galilee Technology Center, Migal, P.O. Box 90000, Rosh Pinna 12100, Israel
Tsipris, J., Galilee Technology Center, Migal, P.O. Box 90000, Rosh Pinna 12100, Israel
Saranga, Y., Faculty of Agriculture, The Hebrew University of Jerusalem, Jerusalem, Israel
Sela, E., Institute of Agricultural Engineering, ARO, The Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel, Faculty of Agriculture, The Hebrew University of Jerusalem, Jerusalem, Israel
Evaluation of different approaches for estimating and mapping crop water status in cotton with thermal imaging
Canopy temperature has long been recognized as an indicator of plant water status, therefore, a high-resolution thermal imaging system was used to map crop water status. Potential approaches for estimating crop water status from digital infrared images of the canopy were evaluated. The effect of time of day on leaf temperature measurements was studied: midday was found to be the optimal time for thermal image acquisition. Comparison between theoretical and empirical approaches for estimating leaf water potential showed that empirical temperature baselines were better than those obtained from energy balance equations. Finally, the effects of angle of view and spatial resolution of the thermal images were evaluated: water status was mapped by using angular thermal images. In spite of the different viewing angles and spatial resolution, the map provided a good representation of the measured leaf water potential. © Springer Science+Business Media, LLC 2009.
Scientific Publication
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