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פותח על ידי קלירמאש פתרונות בע"מ -
An artificial capillary barrier to improve root-zone conditions for horticultural crops: Response of pepper plants to matric head and irrigation water salinity
Year:
2012
Source of publication :
Agricultural Water Management
Authors :
בן-גל, אלון
;
.
Volume :
105
Co-Authors:
Ityel, E., Wyler Department of Dryland Agriculture, French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Sede Boqer campus, Zip 84990, Israel
Lazarovitch, N., Wyler Department of Dryland Agriculture, French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Sede Boqer campus, Zip 84990, Israel
Silberbush, M., Wyler Department of Dryland Agriculture, French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Sede Boqer campus, Zip 84990, Israel
Ben-Gal, A., Department of Environmental Physics and Irrigation, Agricultural Research Organization, Gilat Research Center, Mobile post Negev 2, 85280, Israel
Facilitators :
From page:
13
To page:
20
(
Total pages:
8
)
Abstract:
Reduced water availability and increased salinity result in similar plant responses including reduced root mass and conductivity with consequential reduced transpiration and biomass production. We hypothesized that the increased soil matric head created by a capillary barrier (CB) positioned at the bottom of the root-zone would improve plant production, especially when irrigated with brackish water. Field and lysimeter studies were conducted with bell pepper (Capsicum annuum) plants, comparing root-zones with and without an underlying CB, irrigated either with desalinated (DW, EC=0.2dSm -1) or brackish (SW, EC=3.8dSm -1) water, at various rates.When irrigated with SW, plants grown above a CB yielded 24% higher biomass than control plants (without CB) for all irrigation applications. But, when DW was applied, only a 6% advantage for the CB root-zone was observed. Biomass yield with the CB treatment was only slightly affected by water salinity while without CB, yields significantly decreased when irrigated with SW. The extent of evapotranspiration, plant growth and yield responses to the presence of a CB appeared to be climate dependent. When vapor pressure deficit (VPD) was low (i.e. <1.5. kPa), smaller responses were measured, while more pronounced response was found when VPD increased. © 2011 Elsevier B.V..
Note:
Related Files :
Capsicum annuum
evapotranspiration
horticulture
irrigation
rhizosphere
soil surveys
transpiration
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/j.agwat.2011.12.016
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
23753
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:02
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Scientific Publication
An artificial capillary barrier to improve root-zone conditions for horticultural crops: Response of pepper plants to matric head and irrigation water salinity
105
Ityel, E., Wyler Department of Dryland Agriculture, French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Sede Boqer campus, Zip 84990, Israel
Lazarovitch, N., Wyler Department of Dryland Agriculture, French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Sede Boqer campus, Zip 84990, Israel
Silberbush, M., Wyler Department of Dryland Agriculture, French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Sede Boqer campus, Zip 84990, Israel
Ben-Gal, A., Department of Environmental Physics and Irrigation, Agricultural Research Organization, Gilat Research Center, Mobile post Negev 2, 85280, Israel
An artificial capillary barrier to improve root-zone conditions for horticultural crops: Response of pepper plants to matric head and irrigation water salinity
Reduced water availability and increased salinity result in similar plant responses including reduced root mass and conductivity with consequential reduced transpiration and biomass production. We hypothesized that the increased soil matric head created by a capillary barrier (CB) positioned at the bottom of the root-zone would improve plant production, especially when irrigated with brackish water. Field and lysimeter studies were conducted with bell pepper (Capsicum annuum) plants, comparing root-zones with and without an underlying CB, irrigated either with desalinated (DW, EC=0.2dSm -1) or brackish (SW, EC=3.8dSm -1) water, at various rates.When irrigated with SW, plants grown above a CB yielded 24% higher biomass than control plants (without CB) for all irrigation applications. But, when DW was applied, only a 6% advantage for the CB root-zone was observed. Biomass yield with the CB treatment was only slightly affected by water salinity while without CB, yields significantly decreased when irrigated with SW. The extent of evapotranspiration, plant growth and yield responses to the presence of a CB appeared to be climate dependent. When vapor pressure deficit (VPD) was low (i.e. <1.5. kPa), smaller responses were measured, while more pronounced response was found when VPD increased. © 2011 Elsevier B.V..
Scientific Publication
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