Lakehead University Library Logo
    • Login
    View Item 
    •   Knowledge Commons
    • Electronic Theses and Dissertations
    • Electronic Theses and Dissertations from 2009
    • View Item
    •   Knowledge Commons
    • Electronic Theses and Dissertations
    • Electronic Theses and Dissertations from 2009
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.
    quick search

    Browse

    All of Knowledge CommonsCommunities & CollectionsBy Issue DateAuthorTitleSubjectDisciplineAdvisorCommittee MemberThis CollectionBy Issue DateAuthorTitleSubjectDisciplineAdvisorCommittee Member

    My Account

    Login

    Statistics

    View Usage Statistics

    Impact of weather variability and climate change on grain yield of Sable wheat in Thunder Bay, Ontario

    Thumbnail

    View/Open

    ChauhanJ2021m-1a.pdf (545.1Kb)

    Date

    2021

    Author

    Chauhan, Jannat

    Degree

    Master of Science

    Discipline

    Natural Resources Management

    Subject

    Grain yield
    Spring wheat
    Effects of weather on wheat growth

    Metadata

    Show full item record

    Abstract

    Cultivation of spring wheat varieties has expanded into northern areas where it is an integral part of the crop rotations followed by the farmers. Around Thunder Bay, in Northern Ontario, spring wheat is typically grown from May until September. Crop success or failure depends on critical stages of growth in spring wheat that include emergence and tillering (in May-June), stem elongation (jointing) and booting (in June-July), spike emergence, heading (mid July), anthesis, grain filling (July-August), and kernel hardening or maturity (in August). Weather plays a vital role at each of these stages. Here, analysis is presented of the role of weather during seeding, tillering, jointing, grain-filling and kernel-hardening stages on the grain yield of spring wheat (cultivar Sable) from 2003-2017 at the Lakehead University Agricultural Research Station (LUARS), Thunder Bay. The analysis was conducted using the CROP-SIM CERES model and weather records at the Thunder Bay Airport (~10 km from LUARS). Simulation of future yields followed with projected climate according to the Representative Concentration Pathway (RCP) 2.6, a greenhouse gas trajectory adopted by the Intergovernmental Panel on Climate Change (IPCC). The simulation predicted an average 26% lower grain yield by 2030. Sable grain yield was correlated to maximum (R2 = 0.69) and minimum (R2 = 0.46) temperature, but rainfall was not a factor that could predict wheat grain yield on its own. In the future, growers could experience a greater number of heat-stress days, and an increase in minimum temperatures during the jointing, grain filling and kernel-hardening stages that may limit future yields.

    URI

    https://knowledgecommons.lakeheadu.ca/handle/2453/4889

    Collections

    • Electronic Theses and Dissertations from 2009

    Lakehead University Library
    Contact Us | Send Feedback

     


    Lakehead University Library
    Contact Us | Send Feedback