נגישות
menu      
Advanced Search
Syntax
Search...
Volcani treasures
About
Terms of use
Manage
Community:
אסיף מאגר המחקר החקלאי
Powered by ClearMash Solutions Ltd -
Generalized coupled source-sink model for evaluating transient water uptake in trickle irrig ation: II. Irrigation scheduling scenarios
Year:
2012
Authors :
Communar, Gregory M.
;
.
Friedman, Samuel
;
.
Volume :
76
Co-Authors:
Communar, G., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Friedman, S.P., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Facilitators :
From page:
791
To page:
805
(
Total pages:
15
)
Abstract:
The previously derived coupled source-sink modeling approach for vertically heterogeneous cylindrical domains was extended to conditions prevailing when water uptake is controlled by diurnally time-varying, transpirationdriven plant resistance and by cyclic water applications, both leading to unsteady flow regimes in the rooting zone. Examples include simulations of diurnal variations in water uptake rates by plant roots (sinks) in homogeneous and vertically heterogeneous soils of various texture, under conditions of steady, continuous and unsteady water application, representative of various irrigation scheduling practices: pulsed, daily, and every few days. In coarsetextured, fast-responding soil, it is possible to meet the diurnal transpiration demand, but water losses through deep percolation are high. In soils of fi ner texture, daily short applications in the morning result in uptake patterns skewed toward morning, whereas all-day-long irrigation pushes the temporal uptake pattern toward the afternoon. In fi ne-Textured soils irrigated every few days, similar water uptake volumes result from either prolonged, all-day, or short, morning applications, but the through-cycle uptake rates are more even with all-day applications. © Soil Science Society of America.
Note:
Related Files :
irrigation
rhizosphere
Soils
Source-sink
Textures
transpiration
Uptake rate
Show More
Related Content
More details
DOI :
10.2136/sssaj2011.0210
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
31808
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:05
You may also be interested in
Scientific Publication
Generalized coupled source-sink model for evaluating transient water uptake in trickle irrig ation: II. Irrigation scheduling scenarios
76
Communar, G., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Friedman, S.P., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Generalized coupled source-sink model for evaluating transient water uptake in trickle irrig ation: II. Irrigation scheduling scenarios
The previously derived coupled source-sink modeling approach for vertically heterogeneous cylindrical domains was extended to conditions prevailing when water uptake is controlled by diurnally time-varying, transpirationdriven plant resistance and by cyclic water applications, both leading to unsteady flow regimes in the rooting zone. Examples include simulations of diurnal variations in water uptake rates by plant roots (sinks) in homogeneous and vertically heterogeneous soils of various texture, under conditions of steady, continuous and unsteady water application, representative of various irrigation scheduling practices: pulsed, daily, and every few days. In coarsetextured, fast-responding soil, it is possible to meet the diurnal transpiration demand, but water losses through deep percolation are high. In soils of fi ner texture, daily short applications in the morning result in uptake patterns skewed toward morning, whereas all-day-long irrigation pushes the temporal uptake pattern toward the afternoon. In fi ne-Textured soils irrigated every few days, similar water uptake volumes result from either prolonged, all-day, or short, morning applications, but the through-cycle uptake rates are more even with all-day applications. © Soil Science Society of America.
Scientific Publication
You may also be interested in