Advanced

Influence of geometric design of alternate partial root-zone subsurface drip irrigation (APRSDI) with brackish water on soil moisture and salinity distribution

Aboulila, Tarek Selim LU ; Berndtsson, Ronny LU ; Persson, Magnus LU ; Somaida, Mohamed; El-Kiki, Mohamed; Hamed, Yasser; Mirdan, Ahmed and Zhou, Qingyun (2012) In Agricultural Water Management 103. p.182-190
Abstract (Swedish)
Abstract in Undetermined

In alternate partial root-zone irrigation (APRI) a significant amount of irrigation water can be saved without considerable yield reduction. In this paper, Hydrus-2D/3D was used to investigate the impact of geometric design of alternate partial root-zone subsurface drip irrigation (APRSDI) with brackish water for growing tomato on soil moisture and salinity distribution. Three inter-plant emitter distances (IPED; 20, 30, and 40 cm), two emitter depths (10 and 20 cm), and three irrigation water salinity levels (0, 1, and 2 dS m-1) were used to implement the proposed simulation scenarios in loamy sand soil during a 40-day simulation period. The simulation results showed that higher soil moisture... (More)
Abstract in Undetermined

In alternate partial root-zone irrigation (APRI) a significant amount of irrigation water can be saved without considerable yield reduction. In this paper, Hydrus-2D/3D was used to investigate the impact of geometric design of alternate partial root-zone subsurface drip irrigation (APRSDI) with brackish water for growing tomato on soil moisture and salinity distribution. Three inter-plant emitter distances (IPED; 20, 30, and 40 cm), two emitter depths (10 and 20 cm), and three irrigation water salinity levels (0, 1, and 2 dS m-1) were used to implement the proposed simulation scenarios in loamy sand soil during a 40-day simulation period. The simulation results showed that higher soil moisture content was found beneath the plant trunk in case of 20 cm (short IPED) and near the domain border in case of 30 and 40 cm IPED. Short IPED guarantees more water in the maximum root density zone. A deeper wetting front occurred for deep emitter depth, while the wetting front reached the soil surface for shallow emitter depth. Salinity results revealed that as irrigation water salinity increased, the salinity in the top soil increased. In addition, the salinity at the soil surface increased as IPED and emitter depth increased. Higher root water uptake rates were recorded in the case of 20 cm IPED while the emitter depth did not show any considerable effect on root water uptake rates. Moreover, the applied irrigation water was fully consumed by the plant in case of short IPED. Emitter depth and salinity of irrigation water had negligible effect on amount of irrigation water extracted by plant roots and percolated amount below the bottom boundary of the flow domain. Overall, short IPED is recommended in APRSDI with or without brackish irrigation water regardless of the emitter depth. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Alternate partial root-zone subsurface drip irrigation, Emitter depth, Inter-plant emitter distances, Soil salinity, Hydrus-2D/3D, Egypt.
in
Agricultural Water Management
volume
103
pages
182 - 190
publisher
Elsevier
external identifiers
  • wos:000300758000020
  • scopus:84855195003
ISSN
1873-2283
DOI
10.1016/j.agwat.2011.11.013
language
English
LU publication?
yes
id
c43a0fe3-6e0a-42b1-84d7-1f5f9f42811c (old id 2199559)
date added to LUP
2011-11-02 16:42:46
date last changed
2017-08-06 03:19:32
@article{c43a0fe3-6e0a-42b1-84d7-1f5f9f42811c,
  abstract     = {<b>Abstract in Undetermined</b><br/><br>
In alternate partial root-zone irrigation (APRI) a significant amount of irrigation water can be saved without considerable yield reduction. In this paper, Hydrus-2D/3D was used to investigate the impact of geometric design of alternate partial root-zone subsurface drip irrigation (APRSDI) with brackish water for growing tomato on soil moisture and salinity distribution. Three inter-plant emitter distances (IPED; 20, 30, and 40 cm), two emitter depths (10 and 20 cm), and three irrigation water salinity levels (0, 1, and 2 dS m-1) were used to implement the proposed simulation scenarios in loamy sand soil during a 40-day simulation period. The simulation results showed that higher soil moisture content was found beneath the plant trunk in case of 20 cm (short IPED) and near the domain border in case of 30 and 40 cm IPED. Short IPED guarantees more water in the maximum root density zone. A deeper wetting front occurred for deep emitter depth, while the wetting front reached the soil surface for shallow emitter depth. Salinity results revealed that as irrigation water salinity increased, the salinity in the top soil increased. In addition, the salinity at the soil surface increased as IPED and emitter depth increased. Higher root water uptake rates were recorded in the case of 20 cm IPED while the emitter depth did not show any considerable effect on root water uptake rates. Moreover, the applied irrigation water was fully consumed by the plant in case of short IPED. Emitter depth and salinity of irrigation water had negligible effect on amount of irrigation water extracted by plant roots and percolated amount below the bottom boundary of the flow domain. Overall, short IPED is recommended in APRSDI with or without brackish irrigation water regardless of the emitter depth.},
  author       = {Aboulila, Tarek Selim and Berndtsson, Ronny and Persson, Magnus and Somaida, Mohamed and El-Kiki, Mohamed and Hamed, Yasser and Mirdan, Ahmed and Zhou, Qingyun},
  issn         = {1873-2283},
  keyword      = {Alternate partial root-zone subsurface drip irrigation,Emitter depth,Inter-plant emitter distances,Soil salinity,Hydrus-2D/3D,Egypt.},
  language     = {eng},
  pages        = {182--190},
  publisher    = {Elsevier},
  series       = {Agricultural Water Management},
  title        = {Influence of geometric design of alternate partial root-zone subsurface drip irrigation (APRSDI) with brackish water on soil moisture and salinity distribution},
  url          = {http://dx.doi.org/10.1016/j.agwat.2011.11.013},
  volume       = {103},
  year         = {2012},
}