Estimating water table contributions to corn and sorghum water use

Sepaskhah, Ali Reza; Kanooni, Amin; Ghasemi, Mohammad Mehdi

doi:10.1016/s0378-3774(02)00081-1

Cited by 55 publications

(25 citation statements)

References 5 publications

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“…where ∆W is the difference in soil moisture in the 0-120-cm layer between the beginning and end of experimental period, P and I are precipitation and irrigation respectively, G is groundwater imbibition to the root system (calculated following the method described in Sepaskhah et al [29]), R is the surface runoff (there was no surface runoff, as the plot was flat), F is drainage (assumed to be zero, because drip irrigation and precipitation are too low to cause drainage below 2 m). The water use efficiency (WUE, kg·ha −1 ·mm −1 ) was calculated as the grain yield (Y, kg·ha −1 ) divided by ET:…”

Section: Measurementsmentioning

confidence: 99%

Combined Effects of Mulch and Tillage on Soil Hydrothermal Conditions under Drip Irrigation in Hetao Irrigation District, China

Zhang

Zhou

et al. 2016

Water

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Soil hydrothermal condition is one of the most important factors affecting crop growth in arid regions. This study aimed to investigate the effect of mulching and tillage on moisture and temperature variations in soil under drip irrigation in the arid Hetao Irrigation District, northwest China. Four treatments were included: (1) alternating ridges (40 cm wide and 20 cm high) and furrows (40 cm wide) with plots fully mulched with plastic film (RFM); (2) alternating ridges (40 cm wide and 20 cm high) and furrows (40 cm wide) with partial film mulch (only the plant rows mulched) (RPM); (3) flat tillage with plots fully mulched with plastic film (FFM); and (4) flat tillage with partial film mulch (only the plant rows mulched) (FPM). The ridge tillage and plastic film increased soil temperature and significantly conserved soil water, and thus increased the maize yield and water use efficiency (WUE). The RFM treatment had a greater effect than the RPM, FFM, and FPM treatments on the soil moisture and water storage over 0-70 cm in depth during the entire growing period in 2014 and 2015, indicating that full transparent plastic film mulch increased soil water status and promoted deep water percolation, and ridge tillage further enhanced water redistribution to deep soils. Furthermore, RFM proportionally increased soil temperature by 0.36 • C, 1.49 • C, and 1.27 • C above the temperatures under RPM, FPM, and FFM, respectively, in 2014 and by 1.19 • C, 1.62 • C, and 0.35 • C, respectively, in 2015. During the drought year of 2014, tillage influenced temperature more than mulching; however, mulching played a more important role in preserving thermal conditions than tillage during the humid year of 2015. Consequently, RFM increased the maize yield and WUE significantly. We conclude that a combined system of full plastic film mulch and ridge tillage creates beneficial soil hydrothermal conditions under drip irrigation and thus promotes the growth and performance of field crops.

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Section: Measurementsmentioning

confidence: 99%

Combined Effects of Mulch and Tillage on Soil Hydrothermal Conditions under Drip Irrigation in Hetao Irrigation District, China

Zhang

Zhou

et al. 2016

Water

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“…The values of ET o in Bajgah and Kooshkak areas were calculated by Penman-FAO (Doorenbos and Pruitt, 1977) method using the meteorological data obtained from weather stations in the areas. The Penman-FAO method was used as recommended by Sepaskhah (1999) for the local conditions. The amount of water for each irrigation event was considered as cumulative ET c in the respective duration and the water was applied with a flexible hose and measured with a volumetric flow meter.…”

Section: Experimental Designmentioning

confidence: 99%

Effects of Alternate Furrow Irrigation and Nitrogen Application Rates on Yield and Water-and Nitrogen-Use Efficiency of Winter Wheat (Triticum aestivumL.)

Sepaskhah

Hosseini

2008

Plant Production Science

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“…Crop-water use from the water table may be important in arid and semi-arid regions (Sepaskhah et al, 2003). Shallow groundwater should be viewed as a potential water resource for crop use provided that upflow does not contribute to processes of soil deterioration, such as salinization or acidification, nor limits crop growth through water logging (Benz et al, 1984).…”

Section: Introductionmentioning

confidence: 99%

Seasonal groundwater contribution to crop-water use assessed with lysimeter observations and model simulations

Luo

Sophocleous

2010

Journal of Hydrology

110

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Estimating water table contributions to corn and sorghum water use

Cited by 55 publications

References 5 publications

Combined Effects of Mulch and Tillage on Soil Hydrothermal Conditions under Drip Irrigation in Hetao Irrigation District, China

Combined Effects of Mulch and Tillage on Soil Hydrothermal Conditions under Drip Irrigation in Hetao Irrigation District, China

Effects of Alternate Furrow Irrigation and Nitrogen Application Rates on Yield and Water-and Nitrogen-Use Efficiency of Winter Wheat (Triticum aestivumL.)

Seasonal groundwater contribution to crop-water use assessed with lysimeter observations and model simulations

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