Modelling irrigation and fertiliser use for chlorophyll production

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dc.contributor.authorPérez-Ortolá, Marta
dc.contributor.authorDaccache, Andre
dc.contributor.authorKnox, Jerry W.
dc.date.accessioned2017-04-04T11:48:38Z
dc.date.available2017-04-04T11:48:38Z
dc.date.issued2016-03-28
dc.description.abstractChlorophyll is a natural coloring extract used extensively in the food and pharmaceutical industries. In Europe, most chlorophyll is produced commercially from rainfed grassland production in eastern England. This paper describes a biogeochemical modeling study to assess the potential yield benefits associated with switching from rainfed to irrigated production. The research is in response the impacts of recent summer droughts on yield coupled with risks regarding climate change, rainfall reliability and long-term viability of rainfed production. The Denitrification-Decomposition model was calibrated and validated using multiple field data (n = 47) from 2000 to 2009 for a tall fescue grass (Festuca arundinacea) to simulate a range of irrigation and fertilizer management regimes on yield (annual and individual yield per cut). For chlorophyll production, a schedule combining 300 mm year−1 irrigation with 300 kg N ha−1 was shown to provide the highest average yield (an uplift of +62% above current levels). Switching from rainfed to irrigated production could also potentially halve (54%) current levels of fertilizer application. The implications for reducing environmental impacts from nitrate leaching are discussed.en_UK
dc.identifier.citationMarta Pérez-Ortolá, Andre Daccache and Jerry W. Knox. Modelling irrigation and fertiliser use for chlorophyll production. Grassland Science, Volume 62, Issue 2, April 2016, pp102–111en_UK
dc.identifier.issn1744-6961
dc.identifier.issnhttp://dx.doi.org/10.1111/grs.12116
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/11704
dc.language.isoenen_UK
dc.publisherWileyen_UK
dc.rightsAttribution-Non-Commercial 3.0 Unported (CC BY-NC 3.0) You are free to: Share — copy and redistribute the material in any medium or format, Adapt — remix, transform, and build upon the material. The licensor cannot revoke these freedoms as long as you follow the license terms. Under the following terms: Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. Information: Non-Commercial — You may not use the material for commercial purposes. No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
dc.subjectCrop modelen_UK
dc.subjectgrassen_UK
dc.subjectirrigation schedulingen_UK
dc.subjectwateren_UK
dc.subjectyielden_UK
dc.titleModelling irrigation and fertiliser use for chlorophyll productionen_UK
dc.typeArticleen_UK

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