Modelling impacts of precision irrigation on crop yield and in-field water management

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dc.contributor.authorGonzález Perea, R.
dc.contributor.authorDaccache, Andre
dc.contributor.authorRodriguez Diaz, J. A.
dc.contributor.authorCamacho Poyato, E.
dc.contributor.authorKnox, Jerry W.
dc.date.accessioned2017-09-15T19:21:57Z
dc.date.available2017-09-15T19:21:57Z
dc.date.issued2017-08-29
dc.descriptionThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/),
dc.description.abstractPrecision irrigation technologies are being widely promoted to resolve challenges regarding improving crop productivity under conditions of increasing water scarcity. In this paper, the development of an integrated modelling approach involving the coupling of a water application model with a biophysical crop simulation model (Aquacrop) to evaluate the in-field impacts of precision irrigation on crop yield and soil water management is described. The approach allows for a comparison between conventional irrigation management practices against a range of alternate so-called ‘precision irrigation’ strategies (including variable rate irrigation, VRI). It also provides a valuable framework to evaluate the agronomic (yield), water resource (irrigation use and water efficiency), energy (consumption, costs, footprint) and environmental (nitrate leaching, drainage) impacts under contrasting irrigation management scenarios. The approach offers scope for including feedback loops to help define appropriate irrigation management zones and refine application depths accordingly for scheduling irrigation. The methodology was applied to a case study in eastern England to demonstrate the utility of the framework and the impacts of precision irrigation in a humid climate on a high-value field crop (onions). For the case study, the simulations showed how VRI is a potentially useful approach for irrigation management even in a humid environment to save water and reduce deep percolation losses (drainage). It also helped to increase crop yield due to improved control of soil water in the root zone, especially during a dry season.en_UK
dc.identifier.citationGonzález Perea R, Daccache A, Rodríguez Díaz JA, et al. (2018) Modelling impacts of precision irrigation on crop yield and in-field water management. Precision Agriculture,Volume 19, Issue 3, June 2018, pp. 497–512en_UK
dc.identifier.cris18225306
dc.identifier.issn1385-2256
dc.identifier.urihttp://dx.doi.org/10.1007/s11119-017-9533-6
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/12504
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectAquaCropen_UK
dc.subjectVariable rate irrigationen_UK
dc.subjectOnionen_UK
dc.subjectSprinklersen_UK
dc.subjectWater resourcesen_UK
dc.titleModelling impacts of precision irrigation on crop yield and in-field water managementen_UK
dc.typeArticleen_UK

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