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Assessing the financial and environmental impacts of precision irrigation in a humid climate

Horticultural science (Praha), 2019-01, Vol.46 (1), p.43-52 [Peer Reviewed Journal]

2019. This work is published under https://www.agriculturejournals.cz/web/about/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;ISSN: 0862-867X ;EISSN: 1805-9333 ;DOI: 10.17221/116/2017-HORTSCI

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  • Title:
    Assessing the financial and environmental impacts of precision irrigation in a humid climate
  • Author: El Chami, Daniel ; Knox, Jerry W. ; Daccache, André ; Weatherhead, Edward Keith
  • Subjects: Agricultural economics ; Climate ; Cost control ; cost-benefit analysis ; Emissions ; Energy conservation ; Environmental impact ; Equipment costs ; Humid climates ; Irrigation ; Irrigation systems ; Irrigation water ; Precision farming ; Soils ; spatial soil variability ; Variability ; variable rate irrigation ; Water conservation
  • Is Part Of: Horticultural science (Praha), 2019-01, Vol.46 (1), p.43-52
  • Description: Precision agriculture is increasingly used where in-field spatial variability exists; however, the benefits of its use in humid climates are less apparent. This paper reports on a cost-benefit assessment of precision irrigation with variable rate technique (VRI) versus conventional irrigation, both compared to rainfed production, using a travelling hose-reel irrigator fitted with a boom on onions in eastern England. Selected environmental outcomes including water savings and CO2e emissions are evaluated. The modelled precision irrigation system, which responds to soil variability, generates better environmental outcomes than the conventional system in terms of water savings and reduced CO2e emissions (22.6% and 23.0% lower, respectively). There is also an increase in the ‘added value’ of the irrigation water used (£3.02/m3 versus £2.36/m3). Although precision irrigation leads to significant financial benefits from water and energy savings, these alone do not justify the additional equipment investment costs. However, any changes in yield or quality benefits, equipment costs or greater soil variability than on this site would make investment in precision irrigation more viable.
  • Publisher: Prague: Czech Academy of Agricultural Sciences (CAAS)
  • Language: English;Czech;Slovak
  • Identifier: ISSN: 0862-867X
    EISSN: 1805-9333
    DOI: 10.17221/116/2017-HORTSCI
  • Source: Open Access: DOAJ Directory of Open Access Journals
    AUTh Library subscriptions: ProQuest Central
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