Evaluation of furrow irrigation practices in Fergana Valley of Uzbekistan

Reddy, J. Mohan; Jumaboev, Kahramon; Matyakubov, Bakhtiyar; Eshmuratov, Davron

doi:10.1016/j.agwat.2012.11.004

Cited by 37 publications

(15 citation statements)

References 4 publications

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“…The higher values are for drip and sprinkler irrigation systems, whereas the application efficiencies of surface irrigation systems in developing countries are reported to be, on average, 40%. An example of these inefficiencies is provided in Uzbekistan, Central Asia (Reddy et al 2013), where irrigation supply systems are reasonably unsophisticated, farms/fields are small, and management is less than optimal. Total irrigated area in Uzbekistan is close to 4 Mha (Reddy et al 2013).…”

Section: Issue Of Deep Drainage and 'Clay Soils Don't Drain'mentioning

confidence: 99%

“…An example of these inefficiencies is provided in Uzbekistan, Central Asia (Reddy et al 2013), where irrigation supply systems are reasonably unsophisticated, farms/fields are small, and management is less than optimal. Total irrigated area in Uzbekistan is close to 4 Mha (Reddy et al 2013). By 1994, almost 50% of the total irrigated area was affected by waterlogging and salinity, as a result of excessive seepage and losses from the canal networks and fields and poor performance of drainage systems.…”

Section: Issue Of Deep Drainage and 'Clay Soils Don't Drain'mentioning

confidence: 99%

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The Australian Cotton Industry and four decades of deep drainage research: a review

Silburn

Foley²,

Biggs³

et al. 2013

Crop Pasture Sci.

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The Australian cotton industry and governments have funded research into the deep-drainage component of the soil–water balance for several decades. Cotton is dominantly grown in the northern Murray–Darling and Fitzroy Basins, using furrow irrigation on cracking clays. Previously, it was held that furrow irrigation on cracking clays was inherently efficient and there was little deep drainage. This has been shown to be simplistic and generally incorrect. This paper reviews global and northern Australian deep-drainage studies in irrigation, generally at point- or paddock-scale, and the consequences of deep drainage. For furrow-irrigated fields in Australia, key findings are as follows. (i) Deep drainage varies considerably depending on soil properties and irrigation management, and is not necessarily ‘very small’. Historically, values of 100–250 mm year–1 were typical, with 3–900 mm year–1 observed, until water shortage in the 2000s and continued research and extension focussed attention on water-use efficiency (WUE). (ii) More recently, values of 50–100 mm year–1 have been observed, with no deep drainage in drier years; these levels are lower than global values. (iii) Optimisation (flow rate, field length, cut-off time) of furrow irrigation can at least halve deep drainage. (iv) Cotton is grown on soils with a wide range in texture, sodicity and structure. (v) Deep drainage is moderately to strongly related to total rainfall plus irrigation, as it is globally. (vi) A leaching fraction, to avoid salt build-up in the soil profile, is only needed for irrigation where more saline water is used. Drainage from rainfall often provides an adequate leaching fraction. (vii) Near-saturated conditions occur for at least 2–6 m under irrigated fields, whereas profiles are dry under native vegetation in the same landscapes. (viii) Deep drainage leachate is typically saline and not a source of good quality groundwater recharge. Large losses of nitrate also occur in deep drainage. The consequences of deep drainage for groundwater and salinity are different where underlying groundwater can be used for pumping (fresh water, high yield; e.g. Condamine alluvia) and where it cannot (saline water or low yield; e.g. Border Rivers alluvia). Continuing improvements in WUE are needed to ensure long-term sustainability of irrigated cropping industries. Globally there is great potential for increased production using existing water supplies, given deep drainage of 10–25% of water delivered to fields and WUE of <50%. Future research priorities are to further characterise water movement through the unsaturated zone and the consequences of deep drainage.

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Section: Issue Of Deep Drainage and 'Clay Soils Don't Drain'mentioning

confidence: 99%

Section: Issue Of Deep Drainage and 'Clay Soils Don't Drain'mentioning

confidence: 99%

The Australian Cotton Industry and four decades of deep drainage research: a review

Silburn

Foley²,

Biggs³

et al. 2013

Crop Pasture Sci.

View full text Add to dashboard Cite

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“…Previous researches have often used representative values of infiltration parameters and roughness to simulate the advance trajectory and performance for the whole field scale, thereby ignore the inter-furrow variability (Álvarez, 2003;Eldeiry et al, 2005;Sánchez et al, 2009;Reddy et al, 2013). However, whether or not the simulated values correspond well to the real field performance must be analyzed, particularly the uniformity terms.…”

Section: Introductionmentioning

confidence: 99%

Impact of infiltration parameters and Manning roughness on the advance trajectory and irrigation performance for closed-end furrows

Nie

Fei

2014

Span. j. agric. res.

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“…In numerous studies, the adopted cutoff time in furrow irrigation is the moment of completion of the advance phase [50], and farmers in northern China typically set the cutoff time at the moment that the water reaches the downstream end [41,51]. In furrow irrigation, selecting an appropriate discharge is more robust than the approach of limiting length and cutoff time, particularly when a farmer has poor control over the water [16]. Therefore, for practical purposes, the cutoff time in this study was defined as the time at which the water reached the downstream end; this definition yielded reasonable discharge values.…”

Section: Optimization Of Inflow Discharge Based On Manning's Roughnesmentioning

confidence: 99%

“…Zhang et al [11], Bautista et al [12], and Anwar et al [13] have reported Manning's roughness values of 0.02-0.40, 0.04-0.10, and 0.04-0.16, respectively. Other published studies have often used a representative value of Manning's roughness to simulate furrow irrigation [14][15][16][17][18][19]. The question of whether the simulated values correspond well to practical field performance, i.e., the effects of the dependence of Manning roughness on the advance trajectory and irrigation performance of closed-end furrows are rarely analyzed comprehensively, especially at regional scales.…”

Section: Introductionmentioning

confidence: 99%

A Method for Determining the Discharge of Closed-End Furrow Irrigation Based on the Representative Value of Manning’s Roughness and Field Mean Infiltration Parameters Estimated Using the PTF at Regional Scale

Nie

Zhang

et al. 2018

Water

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Infiltration parameters and Manning's roughness are essential input parameters for surface irrigation simulation models. Multiple points of infiltration experiments require time-consuming, costly data collection and problematic calculations of field mean infiltration parameters. This study estimated the field mean infiltration parameters and Manning's roughness values on a regional scale, on the basis of closed-end furrow irrigation experiments conducted at 45 experimental sites on the Guanzhong plain, and evaluated the influence of Manning's roughness on advance trajectory and performance indicators of closed-end furrow irrigation. Then, we present a functional normalization of the Kostiakov equation and pedotransfer function (PTF) to estimate the normalization factors. The proposed method can be used to estimate the field mean infiltration parameters using PTF and the represented Manning's roughness to determine the optimal discharge of closed-end furrow irrigation. The results revealed that the advance trajectory and performance of closed-end furrow irrigation was not sensitive to variations of Manning's roughness, which can be adopted as a representative value (i.e., 0.075) of the maize field. The normalization method was proven to be feasible for the Kostiakov equation, and the PTF reliably estimated the normalization factors. Last, the optimized values of the inflow discharge were determined using the proposed method, with various combinations of furrow lengths and bottom slopes in the study area, and also compared with the inflow discharge determined based on infiltration parameters and Manning's roughness, which were inversed by SIPAR_ID. The results indicated that the inflow discharge values obtained through using the two methods were approximately equal, proving that the proposed method was reliable and easy to use in practice.

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Evaluation of furrow irrigation practices in Fergana Valley of Uzbekistan

Cited by 37 publications

References 4 publications

The Australian Cotton Industry and four decades of deep drainage research: a review

The Australian Cotton Industry and four decades of deep drainage research: a review

Impact of infiltration parameters and Manning roughness on the advance trajectory and irrigation performance for closed-end furrows

A Method for Determining the Discharge of Closed-End Furrow Irrigation Based on the Representative Value of Manning’s Roughness and Field Mean Infiltration Parameters Estimated Using the PTF at Regional Scale

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