Comparing deep drainage estimated with transient and steady state assumptions in irrigated vertisols

Weaver, T. B.; Hulugalle, N. R.; Ghadiri, Hossein

doi:10.1007/s00271-005-0106-5

Cited by 36 publications

(30 citation statements)

References 17 publications

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“…These soils have been observed to seasonally affect and be affected by the hydrology of entire basins (Harvey, 1971 ;Lindenmaier et al, 2006) and are known to strongly influence the transport of water (e.g.. Messing and Jarvis, 1990;Grève et al, 2010) and solutes (e.g., Harris et al, 1994;Bronswijk et al, 1995;Weaver et al, 2005). The most common methods to describe the shrinkage behavior of such soils are based on laboratory atialysis of individual soil clods or cores.…”

Section: Soil Physics Notementioning

confidence: 98%

An Image-Based Method for Determining Bulk Density and the Soil Shrinkage Curve

Stewart

Najm

Rupp

et al. 2012

Soil Science Society of America Journal

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Section: Soil Physics Notementioning

confidence: 98%

An Image-Based Method for Determining Bulk Density and the Soil Shrinkage Curve

Stewart

Najm

Rupp

et al. 2012

Soil Science Society of America Journal

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“…The three sequences were sown with cotton during the 2000-01 and 2002-03 growing seasons, wheat during 2001 winter and sorghum during the 2001-02 growing season with stubble being incorporated. Details of the experimental sites and their management have reported by Weaver et al (2005). Detailed soil properties of these sites are shown in Table 1.…”

Section: Experimental Sites and Soil Samplingmentioning

confidence: 99%

Organochlorine pesticides in soil under irrigated cotton farming systems in Vertisols of the Namoi Valley, north-western New South Wales, Australia

Weaver¹,

Ghadiri²,

Hulugalle³

et al. 2012

Chemosphere

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Organochlorine pesticides (OCPs) such as DDT and DDE have been detected in the surface 0.2m of Vertisols in the lower Namoi Valley of north western New South Wales, Australia even though they have not been applied to crops since 1982. However, their presence in the deeper soil horizons has not been investigated. The objective of this study was to determine if OCPs were present to a depth of 1.2m in Vertisols under irrigated cotton farming systems in the lower Namoi Valley of New South Wales. Soil was sampled from the 0-1.2m depths in three sites, viz. the Australian Cotton Research Institute, ACRI, near Narrabri (149°36'E, 30°12'S), and two cotton farms near Wee Waa (149°27'E, 30°13'S) and Merah North (149°18'E, 30°12'S) in northern New South Wales, Australia. The OCPs detected and their metabolites were α-endosulfan, β-endosulfan, endosulfan sulphate, DDD, DDE, DDT and endrin. The metabolite DDE, a breakdown product of DDT, was the most persistent OCP in all depths analysed. Endosulfan sulphate was the second most persistent followed by endrin>α-endosulfan>β-endosulfan>DDT and DDD. DDT was sprayed extensively in the lower Namoi Valley up to the early 1980s and may explain the persistence of DDE in the majority of soil samples. Dicofol and Dieldrin, two OCPs previously undocumented in Vertisols were also detected. The movement of OCPs into the subsoil of Vertisols may occur when irrigation or rain transports soil colloids and organic matter via preferential flow systems into the deeper layers of a soil profile. Persistence of OCPs was closely correlated to soil organic carbon concentrations. The persistence in soil of OCP's applied to cotton crops grown more than two decades ago suggests that they could enter the food chain. Their presence at depths of 1.2m suggests that they could move into groundwater that may eventually be used for domestic and stock consumption.

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“…Drainage estimates at Theten Farm in relation to drainage estimates from other studies on (a) irrigated and non‐irrigated land, and (b) on Black Vertosol and Grey Vertosol across eastern Australia (After Connolly et al, ; Dalton et al, ; Hulugalle et al, , ; Radford et al, ; Ringrose‐Voase & Nadelko, ; Silburn et al, , Silburn, Foley, Biggs, Montgomery, & Gunawardena, ; Silburn & Montgomery, ; Thorburn et al, ; Tolmie et al, ; Weaver et al, ; Willis et al, ; Willis & Black, )…”

Section: Discussionmentioning

confidence: 99%

“…However, quantification of deep drainage is challenging, and rates can vary strongly over space and time. For example, while deep drainage is commonly considered to be less than 10% of total rainfall for native vegetation, estimates can be high as 70% under irrigated cotton cultivation (Dalton, Raine, & Broadfoot, ; Kurtzman & Scanlon, ); and deep drainage has been recorded as ranging from 0% to 50% of rainfall within the same general soil type (cracking clays) (Connolly et al, ; Dalton et al, ; Hulugalle, Weaver, & Finlay, , ; Radford et al, ; Ringrose‐Voase & Nadelko, ; Silburn et al, , 2013; Silburn & Montgomery, ; Thorburn, Cowie, & Lawrence, ; Tolmie et al, ; Weaver, Hulugalle, & Ghadiri, ; Willis, Black, & Meyer, ; Willis & Black, ).…”

Section: Introductionmentioning

confidence: 99%

Event‐based deep drainage and percolation dynamics in Vertosols and Chromosols

Arnold

Bulovic

McIntyre

et al. 2019

Hydrological Processes

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The quantification of percolation processes and deep drainage rates in cracking clays is challenging due to the existence of multiple flow pathways, including desiccation crack networks, and the effect of variability in antecedent soil moisture and rain event properties. While most previous research on this topic focuses on long‐term average rates, this study focusses on inter‐event dynamics. The study uses data from soil moisture sensors distributed vertically down 4 m profiles of Vertosol and Chromosol soils across 13 sites over an area of approximately 20 km2. The objectives were to estimate the temporal and spatial variability of deep drainage rates and to investigate the effect of antecedent soil moisture conditions and rain event properties on deep drainage rates and percolation dynamics. 35 deep drainage events over a 40‐month period contributed 78 % of the total deep drainage of 254 mm at 4 m depth. Average deep drainage estimates were about 15 % (ranging from 0 – 80 % between sites) of total rainfall and irrigation in the Vertosol and 8% (0 – 24 %) in the Chromosol. The event water travel times at 4 m depth were 0.25 – 38 hr and 14 – 39 hr in the Vertosol and Chromosol respectively. The event deep drainage rates averaged across sites were associated with event rainfall volumes (linear regression R2 = 0.40), with the effect of antecedent conditions evident only when looking at inter‐site differences. The percolation response time was strongly associated with higher rainfall intensities (R2 = 0.33) with no evidence from the linear regression of an antecedent moisture effect.

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Comparing deep drainage estimated with transient and steady state assumptions in irrigated vertisols

Cited by 36 publications

References 17 publications

An Image-Based Method for Determining Bulk Density and the Soil Shrinkage Curve

An Image-Based Method for Determining Bulk Density and the Soil Shrinkage Curve

Organochlorine pesticides in soil under irrigated cotton farming systems in Vertisols of the Namoi Valley, north-western New South Wales, Australia

Event‐based deep drainage and percolation dynamics in Vertosols and Chromosols

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