Performing drip irrigation by the farmer managed Seguia Khrichfa irrigation system, Morocco

Kooij, Saskia van der

doi:10.18174/376256

Cited by 3 publications

(3 citation statements)

References 83 publications

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“…Some authors criticise drip irrigation, including Van der Kooij [29], who provides a review of the literature on the impacts of drip irrigation and concludes that there is no conclusive scientific evidence to support the general belief in drip irrigation as a water-saving device or as a tool to help solve the water crisis. Along the same lines, Batchelor et al [30] state that WCTs often contribute to an intensification of water use.…”

Section: B) Increase In Conveyance Efficiency (Distribution Channels)mentioning

confidence: 99%

Agricultural Irrigation Water Use in a Closed Basin and the Impacts on Water Productivity: The Case of the Guadalquivir River Basin (Southern Spain)

Expósito

Berbel

2017

Water

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This paper analyses the agricultural irrigation water use in a closed basin and the impacts on water productivity, and examines how they have affected the 'closure' process of the Guadalquivir river basin observed in recent decades. Following a period of expansion in irrigation, an administrative moratorium was declared on new irrigated areas in 2005. Since then, the main policy measure has been aimed at the modernisation of irrigated agriculture and the implementation of water conservation technologies. The analysis carried out in this paper shows a significant increase in mean irrigation water productivity in the pre-moratorium period (1989)(1990)(1991)(1992)(1993)(1994)(1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005), driven by the creation of new irrigated areas devoted to high value crops and with a dominant use of deficit irrigation strategies, while a second phase (2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012) is characterised by slower growth in terms of the mean productivity of irrigation water, primarily as a result of a significant reduction in water use per area. Findings show that productivity gains seem to have reached a ceiling in this river basin, since technological innovations (such as new crops, deficit irrigation, and water-saving and conservation technologies) have reached the limits of their capacity to create new value.

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Section: B) Increase In Conveyance Efficiency (Distribution Channels)mentioning

confidence: 99%

Agricultural Irrigation Water Use in a Closed Basin and the Impacts on Water Productivity: The Case of the Guadalquivir River Basin (Southern Spain)

Expósito

Berbel

2017

Water

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“…large-scale-small-scale, modern-traditional, microsprinkler-surface irrigation. These distinct categories are idealized because (1) labels classifying irrigation systems based on physical dimensions are highly contextual, (2) the same irrigated area may combine sprinkler with micro-irrigation or micro with surface irrigation [68,69], (3) irrigation efficiency values are highly contingent on maintenance and managerial activities besides technological features [70], and (4) remarkably different performances can arise within categories due to differences in design or lack of adjustment to specific features of the irrigated area, such as local topography, rising water scarcity and prevalence of drought.…”

Section: Discussionmentioning

confidence: 99%

Large variations in global irrigation withdrawals caused by uncertain irrigation efficiencies

Puy

Lankford

Meier

et al. 2022

Environ. Res. Lett.

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An assessment of the human impact on the global water cycle requires estimating the volume of water withdrawn for irrigated agriculture. A key parameter in this calculation is the irrigation efficiency, which corrects for the fraction of water lost between irrigation withdrawals and the crop due to management, distribution or conveyance losses. Here we show that the irrigation efficiency used in global irrigation models is flawed for it overlooks key ambiguities in partial efficiencies, irrigation technologies, the definition of ``large-scale'' irrigated areas or managerial factors. Once accounted for, these uncertainties can make irrigation withdrawal estimates fluctuate by more than one order of magnitude at the country level. Such variability is larger and leads to more extreme values than that caused by the uncertainties related with climate change. Our results highlight the need to embrace deep uncertainties in irrigation efficiency to prevent the design of shortsighted policies at the river basin-water-agricultural interface.

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“…Moreover, it allows for the application of water at the right time and at a precise rate based on the crop's water requirement (Evans & Sadler, 2008). Studies have shown that adopting drip systems can save irrigation water by 30-60% compared to surface irrigation while increasing yield by 20-50% in various crops (Sivanappan, 1994;van der Kooij, 2009). The adoption of microirrigation has been found to enhance WP, as listed in Table 8.…”

Section: Microirrigationmentioning

confidence: 99%

Practical approaches to enhance water productivity at the farm level in Asia: A review

Meena,

Karnam,

Sujatha

et al. 2023

Irrigation and Drainage

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The global population is constantly increasing, reached 8 billion in November 2022 and is expected to reach 9 billion by 2037. This increased population is expected to increase the demand for food, clothing and shelter, which in turn are heavily dependent on limited water resources. The available freshwater resources for agricultural use are further declining due to overexploitation and changing climate in the major food baskets of the world. This increasing water scarcity is exacerbated by expanding cities due to increasing urbanization. This calls for a new look at the allocation of water to agriculture. Therefore, the development of new strategies to improve agricultural water use may serve as an important adaptation strategy. This review attempts to include a comprehensive review of the literature on (i) the status and definition of water productivity and (ii) factors responsible for low water productivity (WP) in Asian agriculture. Furthermore, it contains practical approaches to enhance water use efficiency at the farm level covering all field crops and a range of soil types, which include (i) agronomic interventions; (ii) genetic interventions, such as the identification and cultivation of crop cultivars with high WP; and (iii) genotype, environment and crop management interactions for higher WP.

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Performing drip irrigation by the farmer managed Seguia Khrichfa irrigation system, Morocco

Cited by 3 publications

References 83 publications

Agricultural Irrigation Water Use in a Closed Basin and the Impacts on Water Productivity: The Case of the Guadalquivir River Basin (Southern Spain)

Agricultural Irrigation Water Use in a Closed Basin and the Impacts on Water Productivity: The Case of the Guadalquivir River Basin (Southern Spain)

Large variations in global irrigation withdrawals caused by uncertain irrigation efficiencies

Practical approaches to enhance water productivity at the farm level in Asia: A review

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