Integrating deficit irrigation into surface and subsurface drip irrigation as a strategy to save water in arid regions

2018 ◽  
Vol 209 ◽  
pp. 55-61 ◽  
Author(s):  
Hussein M. Al-Ghobari ◽  
Ahmed Z. Dewidar
Keyword(s):  
Drip Irrigation ◽  
Deficit Irrigation ◽  
Arid Regions ◽  
Subsurface Drip Irrigation ◽  
Subsurface Drip

Role of irrigation and wastewater reuse: comparison of subsurface irrigation and furrow irrigation

2004 ◽  
Vol 50 (2) ◽  
pp. 61-68 ◽  
Author(s):  
C. Choi ◽  
I. Song ◽  
S. Stine ◽  
J. Pimentel ◽  
C. Gerba
Keyword(s):  
Drip Irrigation ◽  
Arid Regions ◽  
Irrigation System ◽  
Soil Surface ◽  
Furrow Irrigation ◽  
Subsurface Drip Irrigation ◽  
Vegetable Crops ◽  
Viral Contamination ◽  
Subsurface Drip ◽  
Semi Arid

Two different irrigation systems, subsurface drip irrigation and furrow irrigation, are tested to investigate the level of viral contamination and survival when tertiary effluent is used in arid and semi-arid regions. The effluent was injected with bacteriophages of PRD1 and MS2. A greater number of PRD1 and MS2 were recovered from the lettuce in the subsurface drip-irrigated plots as compared to those in the furrow-irrigated plots. Shallow drip tape installation and preferential water paths through cracks on the soil surface appeared to be the main causes of high viral contamination in subsurface drip irrigation plots, which led to the direct contact of the lettuce stems with the irrigation water which penetrated the soil surface. The water use efficiency of the subsurface drip irrigation system was higher than that of the furrow irrigation system. Thus, subsurface drip irrigation is an efficient irrigation method for vegetable crops in arid and semi-arid regions if viral contamination can be reduced. Deeper installation of drip tapes, frequent irrigations, and timely harvests based on cumulative heat units may further reduce health risks by ensuring viral die-off under various field conditions.

scholarly journals INTEGRATION OF SUBSURFACE IRRIGATION AND ORGANIC MULCHING WITH DEFICIT IRRIGATION TO INCREASE WATER USE EFFICIENCY OF DRIP IRRIGATION

2021 ◽  
pp. 215-226
Author(s):  
Elnemr Moataz
Keyword(s):  
Water Use Efficiency ◽  
Rice Straw ◽  
Water Use ◽  
Drip Irrigation ◽  
Deficit Irrigation ◽  
Subsurface Drip Irrigation ◽  
Tomato Crop ◽  
Tomato Yield ◽  
Use Efficiency ◽  
Subsurface Drip

This study aimed to integrate the ability of organic mulching (rice straw) and subsurface irrigation with deficit irrigation to save soil moisture content (SMC) and increase water use efficiency (WUE). A field experiment was carried out during 2019 on tomato crop in sandy soil. The variables included four levels of irrigation namely 70, 80, 90, and 100% of crop evapotranspiration (ETc) with three irrigation techniques which were subsurface drip irrigation (SSD), mulched surface drip irrigation (MD), and mulched subsurface drip irrigation (MSSD). The treatments of MSSD showed earlier maturity of tomato crop and longer picking period if compared to MD and SSD treatments. MSSD showed higher ability to save (SMC) than other irrigation techniques. Reduction of applied water from 100 to 70% ETc led to a decrease in tomato yield by 23.32% at MSSD compared to 28.47%, and 26.23% for MD, and SSD respectively. The highest WUE was at MSSD70 with 5.92 kg/m3 while the least was 4.21 kg/m3 with SSD100. The highest benefit/cost ratio was 9.03 with the treatment SSD70 while the highest profit of water unit was 2.19 US$/m3 with MSSD70. MSSD can be used with 90% of ETc without any significant difference in tomato crop while it can be used with 70% ETc to obtain higher WUE. The study recommended integrating rice straw mulching and subsurface drip irrigation with deficit irrigation as a strategy to save irrigation water and obtain the maximum possible benefits of water unit whether related to tomato yield or its revenue.

scholarly journals Polymer and deficit irrigation influence on water use efficiency and yield of muskmelon under surface and subsurface drip irrigation

2021 ◽  
Author(s):  
Faisal Zeineldin ◽  
Yousef Al-Molhim
Keyword(s):  
Water Use Efficiency ◽  
Open Field ◽  
Water Use ◽  
Drip Irrigation ◽  
Deficit Irrigation ◽  
Subsurface Drip Irrigation ◽  
Growth Stages ◽  
Polymer Addition ◽  
Use Efficiency ◽  
Subsurface Drip

Water scarcity is a major constraint facing vegetable production sustainability in open field farming of arid regions like the Kingdom of Saudi Arabia. This study was carried out in an open field of the Research and Training Station of King Faisal University in the eastern region of the Kingdom. The objective was to assess the influences of the polymer addition (PA), deficit irrigation regime (DIR), and their combination on the production and water use efficiency (WUE) of muskmelons. PA treatments of 0.0, 0.2 and 0.4% and the irrigation treatments of 100, 75 and 50% of reference evapotranspiration (ET<sub>o</sub>), were imposed throughout the growth stages of muskmelons under surface drip irrigation (DI) and subsurface drip irrigation (SDI). The polymer addition of 0.4% enhanced the field water holding capacity of the medium sandy soil within the locality of the emitters by 43.6%. The soil water content of the surface layer within the vicinity of the polymer amended soil layer increased in a range of 72.4 to 99.4% to the combined influences of the 0.4% PA with the DI and SDI, but were marked more under the SDI. The combination of the 100% ET<sub>o</sub> DIR with polymer additions significantly (P &lt; 0.05) enhanced the muskmelon fruit yield (MFY) under the SDI compared to DI. The PA of 0.4% improved WUE and MFY by 67.7, 70.4% under the SDI, and 58.6, 24.2% under the DI, respectively. Without the polymer addition (0.0% PA), the MFY significantly (P &lt; 0.05) decreased with the increase of the DIRs under both DI and SDI.

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