Crop Water Use from Shallow, Saline Water Tables

Kruse, E. Gordon; Champion, Didier; Cuevas, D.L.; Yoder, R.; Young, D. P.

doi:10.13031/2013.28388

Cited by 25 publications

(2 citation statements)

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“…In general, the water level in the sump (higher ground surface) was maintained between 1.13 and 1.44 m below the soil surface in order to keep the water table between 0.61 and 0.92 m below the soil surface at the lower corner of the field (lower ground surface) due to a 0.72 m surface elevation difference between the sump and the field. In addition, due to concerns about secondary soil salinity and potential enhanced evaporation, the water table was kept below 0.61 m near the soil surface (Kruse et al, 1993).…”

Section: Subirrigation Systemsmentioning

confidence: 99%

Subirrigation System Performance and Evaluation in the Red River Valley of the North

Jia¹,

Scherer²,

Steele³

et al. 2017

Applied Engineering in Agriculture

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Section: Subirrigation Systemsmentioning

confidence: 99%

Subirrigation System Performance and Evaluation in the Red River Valley of the North

Jia¹,

Scherer²,

Steele³

et al. 2017

Applied Engineering in Agriculture

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“…Kong et al [5] studied the effect of different groundwater depths on crop growth using a lysimeter, finding that a depth of 1.5-2.5 m was conducive to crop growth, and when this depth was more than 2.0 m, the existent irrigation schedule was unable to meet the normal growth of crops. Kruse et al [6] pointed out that in the areas with shallow groundwater depth, the groundwater recharge affected the water and the biological and chemical processes of the soil-plant-atmosphere continuum, and if no irrigation was provided, the optimal groundwater depth for winter wheat was about 1.5 m. Wang et al [7] studied the effect of different groundwater depths on crop growth, showing that different groundwater depths led to differences in crop root distribution, which in turn affected the crops' water-yield response mechanism. Zhang [8] using a lysimeter, studied the drought crops' groundwater utilization, suggesting that in the suitable groundwater depth, the groundwater used by drought crops accounted for 50% to 70% of the evapotranspiration.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Spring Wheat Irrigation Schedule in Shallow Groundwater Area of Jiefangzha Region in Hetao Irrigation District

Peng

Zhang

Cai

et al. 2019

Water

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Due to the large spatial variation of groundwater depth, it is very difficult to determine suitable irrigation schedules for crops in shallow groundwater area. A zoning optimization method of irrigation schedule is proposed here, which can solve the problem of the connection between suitable irrigation schedules and different groundwater depths in shallow groundwater areas. The main results include: (1) Taking the annual mean groundwater depth 2.5 m as the dividing line, the shallow groundwater areas were categorized into two irrigation schedule zones. (2) On the principle of maximizing the yield, the optimized irrigation schedule for spring wheat in each zone was obtained. When the groundwater depth was greater than 2.5 m, two rounds of irrigation were chosen at the tillering-shooting stage and the shooting-heading stage with the irrigation quota at 300 mm. When the groundwater depth was less than 2.5 m, two rounds of irrigation were chosen at the tillering-shooting stage, and one round at the shooting-heading stage, with the irrigation quota at 240 mm. The main water-saving effect of the optimized irrigation schedule is that the yield, the soil water use rate, and the water use productivity increased, while the irrigation amount and the ineffective seepage decreased.

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A large weighing lysimeter for evapotranspiration and soil-water-groundwater exchange studies

Yang

Liu

2000

Hydrol. Process.

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A large weighing lysimeter was installed at Yucheng Comprehensive Experimental Station, north China, for evapotranspiration and soil‐water–groundwater exchange studies. Features of the lysimeter include the following: (i) mass resolution equivalent to 0·016 mm of water to accurately and simultaneously determine hourly evapotranspiration, surface evaporation and groundwater recharge; (ii) a surface area of 3·14 m2 and a soil profile depth of 5·0 m to permit normal plant development, soil‐water extraction, soil‐water–groundwater exchanges, and fluctuations of groundwater level; (iii) a special supply–drainage system to simulate field conditions of groundwater within the lysimeter; (iv) a soil mass of about 30 Mg, including both unsaturated and saturated loam. The soil consists mainly of mealy sand and light loam. Monitoring the vegetated lysimeter during the growing period of winter wheat, from October 1998 through to June 1999, indicated that during the period groundwater evaporation contributed 16·6% of total evapotranspiration for a water‐table depth from 1·6 m to 2·4 m below ground surface. Too much irrigation reduced the amount of upward water flow from the groundwater table, and caused deep percolation to the groundwater. Data from neutron probe and tensiometers suggest that soil‐water‐content profiles and soil‐water‐potential profiles were strongly affected by shallow groundwater. Copyright © 2000 John Wiley & Sons, Ltd.

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Crop Water Use from Shallow, Saline Water Tables

Cited by 25 publications

References 0 publications

Subirrigation System Performance and Evaluation in the Red River Valley of the North

Subirrigation System Performance and Evaluation in the Red River Valley of the North

Optimization of Spring Wheat Irrigation Schedule in Shallow Groundwater Area of Jiefangzha Region in Hetao Irrigation District

A large weighing lysimeter for evapotranspiration and soil-water-groundwater exchange studies

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