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פותח על ידי קלירמאש פתרונות בע"מ -
Lettuce Yield-Irrigation Water Quality and Quantity Relationships in a Gypsiferous Desert Soil
Year:
1987
Source of publication :
Agronomy Journal
Authors :
רוסו, דוד
;
.
Volume :
79
Co-Authors:
Facilitators :
From page:
8
To page:
14
(
Total pages:
7
)
Abstract:

Evaluation of the possibility of utilizing marginal soils and saline waters for agricultural production is essential for the development of arid zones. The effect of irrigation water quality (salinity) and quantity on the yield of lettuce (Lactuca saliva var. ‘Iceberg’) was studied in a gypsiferous desert soil (Typic Torrifluvent). Irrigation water volume (Q) ranging from 0.37 to 1.3, 0.6 to 1.6, and 0.7 to 2.4 times the Class A pan evaporation (Eo) for the irrigation water salinities of Ciw = 1.7, 3.1, and 4.7 dS/m, respectively, were applied via trickle irrigation. Root zone soil water pressure potential and salinity were monitored and lettuce yield was measured. Seasonal average soil water content (θ̅) was affected by irrigation water volume but not by quality (salinity) whereas seasonal average soil water salinity (E̅C̅) and lettuce yield (Y) were affected by both quality and quantity of the irrigation water. For the different ranges of Q associated with the different irrigation waters, θ̅ was increased by 30, 44, and 94%, EC was decreased by 20, 21, and 18%, and Y was increased by 120, 71, and 55% for Ciw = 1.7, 3.1, and 4.7 dS/m, respectively. Curvelinear salt tolerance functions were found to be dependent on the volume of irrigation water, approaching a piecewise linear function when relatively large volumes of irrigation water (Q/Eo > 1) were applied. The increase in irrigation volume compensated only in part for the adverse effect of the irrigation water salinity. Maximum yields obtained using the more saline waters are 6.5 and 20.7% smaller for Ciw = 3.1 and 4.7 dS/m, respectively, relative to yield obtained using Ciw =1.7 dS/m.

Note:
Related Files :
Irrigation scheduling
Lactuca sativa var. 'Iceberg'
Soil water pressure potential
Soil water salinity
Trickle irrigation
עוד תגיות
תוכן קשור
More details
DOI :
10.2134/agronj1987.00021962007900010003x
Article number:
0
Affiliations:
Database:
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
55948
Last updated date:
02/03/2022 17:27
Creation date:
18/08/2021 19:06
Scientific Publication
Lettuce Yield-Irrigation Water Quality and Quantity Relationships in a Gypsiferous Desert Soil
79
Lettuce Yield-Irrigation Water Quality and Quantity Relationships in a Gypsiferous Desert Soil

Evaluation of the possibility of utilizing marginal soils and saline waters for agricultural production is essential for the development of arid zones. The effect of irrigation water quality (salinity) and quantity on the yield of lettuce (Lactuca saliva var. ‘Iceberg’) was studied in a gypsiferous desert soil (Typic Torrifluvent). Irrigation water volume (Q) ranging from 0.37 to 1.3, 0.6 to 1.6, and 0.7 to 2.4 times the Class A pan evaporation (Eo) for the irrigation water salinities of Ciw = 1.7, 3.1, and 4.7 dS/m, respectively, were applied via trickle irrigation. Root zone soil water pressure potential and salinity were monitored and lettuce yield was measured. Seasonal average soil water content (θ̅) was affected by irrigation water volume but not by quality (salinity) whereas seasonal average soil water salinity (E̅C̅) and lettuce yield (Y) were affected by both quality and quantity of the irrigation water. For the different ranges of Q associated with the different irrigation waters, θ̅ was increased by 30, 44, and 94%, EC was decreased by 20, 21, and 18%, and Y was increased by 120, 71, and 55% for Ciw = 1.7, 3.1, and 4.7 dS/m, respectively. Curvelinear salt tolerance functions were found to be dependent on the volume of irrigation water, approaching a piecewise linear function when relatively large volumes of irrigation water (Q/Eo > 1) were applied. The increase in irrigation volume compensated only in part for the adverse effect of the irrigation water salinity. Maximum yields obtained using the more saline waters are 6.5 and 20.7% smaller for Ciw = 3.1 and 4.7 dS/m, respectively, relative to yield obtained using Ciw =1.7 dS/m.

Scientific Publication
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