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אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Comparison of methods for field scale mapping of plant water status using aerial thermal imagery
Year:
2013
Authors :
אלחנתי, ויקטור
;
.
כהן, יפית
;
.
לוי, אהרון
;
.
רוזנברג, אורי
;
.
Volume :
Co-Authors:
Rosenberg, O., Department of Sensing, Information and Mechanization Systems, Institute of Agricultural Engineering, Agricultural Research Organization (A.R.O), Volcani Center, P.O. Box 6, Bet Dagan, 50250, Israel, Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Cohen, Y., Department of Sensing, Information and Mechanization Systems, Institute of Agricultural Engineering, Agricultural Research Organization (A.R.O), Volcani Center, P.O. Box 6, Bet Dagan, 50250, Israel
Saranga, Y., Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Levi, A., Department of Sensing, Information and Mechanization Systems, Institute of Agricultural Engineering, Agricultural Research Organization (A.R.O), Volcani Center, P.O. Box 6, Bet Dagan, 50250, Israel
Alchanatis, V., Department of Sensing, Information and Mechanization Systems, Institute of Agricultural Engineering, Agricultural Research Organization (A.R.O), Volcani Center, P.O. Box 6, Bet Dagan, 50250, Israel
Facilitators :
From page:
185
To page:
192
(
Total pages:
8
)
Abstract:
In previous studies, a model for assessing leaf water potential (LWP) in cotton plants based on Crop Water Stress Index (CWSI) calculated using ground thermal imagery and artificial wet reference (AWR), as the minimum temperature, was developed and validated. The AWR cannot be measured from aerial thermal images and in order to implement this approach, it is essential to characterize the minimum boundary reference temperature and to evaluate the validity of the CWSI-LWP relationship. Four types of minimum references were examined: artificial, theoretical, plant and virtual. Three aerial thermal images were acquired above a cotton field. The best relationship was found between calculated and measured LWP using the virtual reference: high correlation and 1:1 fit. This means that a reliable LWP map of a cotton field can be created using only an aerial thermal image and air temperature. Using the LWP-CWSI relationship, the LWP can be mapped for each pixel or for each area of interest such as an irrigation section or pre-defined management zone.
Note:
Related Files :
Comparison of methods
CWSI
irrigation
Irrigation management
Minimum temperatures
Reference temperature
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר מתוך כינוס
;
.
Language:
אנגלית
Editors' remarks:
ID:
32247
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:08
Scientific Publication
Comparison of methods for field scale mapping of plant water status using aerial thermal imagery
Rosenberg, O., Department of Sensing, Information and Mechanization Systems, Institute of Agricultural Engineering, Agricultural Research Organization (A.R.O), Volcani Center, P.O. Box 6, Bet Dagan, 50250, Israel, Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Cohen, Y., Department of Sensing, Information and Mechanization Systems, Institute of Agricultural Engineering, Agricultural Research Organization (A.R.O), Volcani Center, P.O. Box 6, Bet Dagan, 50250, Israel
Saranga, Y., Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Levi, A., Department of Sensing, Information and Mechanization Systems, Institute of Agricultural Engineering, Agricultural Research Organization (A.R.O), Volcani Center, P.O. Box 6, Bet Dagan, 50250, Israel
Alchanatis, V., Department of Sensing, Information and Mechanization Systems, Institute of Agricultural Engineering, Agricultural Research Organization (A.R.O), Volcani Center, P.O. Box 6, Bet Dagan, 50250, Israel
Comparison of methods for field scale mapping of plant water status using aerial thermal imagery
In previous studies, a model for assessing leaf water potential (LWP) in cotton plants based on Crop Water Stress Index (CWSI) calculated using ground thermal imagery and artificial wet reference (AWR), as the minimum temperature, was developed and validated. The AWR cannot be measured from aerial thermal images and in order to implement this approach, it is essential to characterize the minimum boundary reference temperature and to evaluate the validity of the CWSI-LWP relationship. Four types of minimum references were examined: artificial, theoretical, plant and virtual. Three aerial thermal images were acquired above a cotton field. The best relationship was found between calculated and measured LWP using the virtual reference: high correlation and 1:1 fit. This means that a reliable LWP map of a cotton field can be created using only an aerial thermal image and air temperature. Using the LWP-CWSI relationship, the LWP can be mapped for each pixel or for each area of interest such as an irrigation section or pre-defined management zone.
Scientific Publication
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