Biomass partitioning in corn as affected by reduced red-to-far-red light during the critical period of weed control

dc.contributor.advisorSikkema, P.H.
dc.contributor.advisorSwanton, C.J.
dc.contributor.authorLiu, Joanne
dc.date.accessioned2021-01-26T15:14:14Z
dc.date.available2021-01-26T15:14:14Z
dc.date.copyright2006
dc.degree.departmentDepartment of Horticultural Scienceen_US
dc.degree.grantorUniversity of Guelphen_US
dc.degree.nameMaster of Scienceen_US
dc.description.abstractEarly-season weed control is essential to prevent yield loss in corn not only because of direct competition for resources, but also because weeds change the light quality environment of developing corn seedlings. Field experiments were conducted from 2003 to 2005 at the Arkell Research Station, Guelph, Ontario. Corn was grown hydroponically at a density of 40 000 plants ha-1. Weeds were present from corn emergence until 4, 6, 8 and 10 leaf tips and silking. Root:shoot decreased, root and shoot (leaf) dry weights decreased, rate of leaf appearance was delayed, and height increased relative to the weed-free control in the corn sampled prior to silking. As well, stem and ear weights were decreased at silking. These responses were typical of shade avoidance responses and show that low R:FR due to the presence of weeds during the critical period of weed control is detrimental to the growth and development of corn.en_US
dc.identifier.urihttps://hdl.handle.net/10214/23993
dc.language.isoen
dc.publisherUniversity of Guelphen_US
dc.rights.licenseAll items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectearly-seasonen_US
dc.subjectweed controlen_US
dc.subjectbiomassen_US
dc.subjectred-to-far-red lighten_US
dc.subjectcornen_US
dc.subjectlight quality environmenten_US
dc.subjectshade avoidance responseen_US
dc.titleBiomass partitioning in corn as affected by reduced red-to-far-red light during the critical period of weed controlen_US
dc.typeThesisen_US

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