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פותח על ידי קלירמאש פתרונות בע"מ -
Determining transpiration from meteorological data and crop characteristics for irrigation management
Year:
1987
Source of publication :
Irrigation Science
Authors :
כהן, יחזקאל
;
.
מורשת, שמואל
;
.
פוקס, מרסל
;
.
Volume :
8
Co-Authors:
Fuchs, M., Department of Agricultural Meteorology, Institute of Soils and Water, Agricultural Research Organization, The Volcani Center, Bet Dagan 50-250, Israel
Cohen, Y., Department of Agricultural Meteorology, Institute of Soils and Water, Agricultural Research Organization, The Volcani Center, Bet Dagan 50-250, Israel
Moreshet, S., Department of Agricultural Meteorology, Institute of Soils and Water, Agricultural Research Organization, The Volcani Center, Bet Dagan 50-250, Israel
Facilitators :
From page:
91
To page:
99
(
Total pages:
9
)
Abstract:
Traditional meteorological estimates of evapotranspiration include empirical crop factors which are inadequate for scheduling high frequency irrigation. The performance of a transpiration model was tested and adapted to suit the operational requirements of automated irrigation systems. Hourly measurements of global solar radiation, air temperature, humidity and wind speed, obtained from an automatic weather station are inputs to the model. Additional inputs include daily updated data of plant height and leaf area index. This information is processed to determine the active coupling surface between the crop and the atmosphere. The model takes into account the resistance of the leaf to diffusion of water vapor. Calculated transpiration, based on the model, matched very closely measurements of latent heat flux in an irrigated cotton field. It was also in good agreement with water uptake measured in stems of the cotton plants using a heat pulse technique. The test also showed that implementation of the model in the field under study would have improved the efficiency of water application. © 1987 Springer-Verlag.
Note:
Related Files :
CROP CHARACTERISTICS
EVAPORATION - Mathematical Models
IRRIGATION - Management
Meteorological data
Water resources
עוד תגיות
תוכן קשור
More details
DOI :
10.1007/BF00259474
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
30467
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:54
Scientific Publication
Determining transpiration from meteorological data and crop characteristics for irrigation management
8
Fuchs, M., Department of Agricultural Meteorology, Institute of Soils and Water, Agricultural Research Organization, The Volcani Center, Bet Dagan 50-250, Israel
Cohen, Y., Department of Agricultural Meteorology, Institute of Soils and Water, Agricultural Research Organization, The Volcani Center, Bet Dagan 50-250, Israel
Moreshet, S., Department of Agricultural Meteorology, Institute of Soils and Water, Agricultural Research Organization, The Volcani Center, Bet Dagan 50-250, Israel
Determining transpiration from meteorological data and crop characteristics for irrigation management
Traditional meteorological estimates of evapotranspiration include empirical crop factors which are inadequate for scheduling high frequency irrigation. The performance of a transpiration model was tested and adapted to suit the operational requirements of automated irrigation systems. Hourly measurements of global solar radiation, air temperature, humidity and wind speed, obtained from an automatic weather station are inputs to the model. Additional inputs include daily updated data of plant height and leaf area index. This information is processed to determine the active coupling surface between the crop and the atmosphere. The model takes into account the resistance of the leaf to diffusion of water vapor. Calculated transpiration, based on the model, matched very closely measurements of latent heat flux in an irrigated cotton field. It was also in good agreement with water uptake measured in stems of the cotton plants using a heat pulse technique. The test also showed that implementation of the model in the field under study would have improved the efficiency of water application. © 1987 Springer-Verlag.
Scientific Publication
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