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dc.contributor.authorWhittaker, Jennifer
dc.date.accessioned2017-12-19T18:33:36Z
dc.date.available2017-12-19T18:33:36Z
dc.identifier.urihttp://hdl.handle.net/10222/73547
dc.description.abstractAlternative potato rotations are increasingly being examined that can supply N to potato crops and mitigate nitrate (NO3-) leaching from the root zone. This study examined a legume (RC), grass (T) or legume/ grass mixture (M) on soil N supply, and soil solution N in a subsequent potato crop. The below-ground N contribution of cover crops was also examined using 15N labeled fertilized. Total N uptake in unfertilized potatoes was greater under RC and M than T but did not significantly affect total tuber yield. Overall, NO3- susceptible to leaching was lowest under T. From steel lysimeters, at 80 cm below-ground, the M and T treatments resulted in a 66 and 86% reduction in NO3- respectively from 83 mg NO3-N L-1 from unfertilized potato crops grown subsequent to RC. Labeled root N accounted for 24% of total 15N recovered from residues into a subsequent unfertilized potato under RC and M.en_US
dc.subjectNO3 leachingen_US
dc.subject15N traceren_US
dc.subjectcrop residue exchangeen_US
dc.subjectlegume grass mixtureen_US
dc.subjectrootsen_US
dc.subjectcover cropsen_US
dc.subjectSolanum tuberosumen_US
dc.titleASSESSMENT OF COVER CROP SELECTION ON NITROGEN CYCLING IN A THREE-YEAR POTATO ROTATIONen_US
dc.date.defence2017-11-29
dc.contributor.departmentFaculty of Agricultureen_US
dc.contributor.degreeMaster of Scienceen_US
dc.contributor.external-examinern/aen_US
dc.contributor.graduate-coordinatorDr. Haibo Niuen_US
dc.contributor.thesis-readerDr. Bernie Zebarthen_US
dc.contributor.thesis-readerDr. Derek Lynchen_US
dc.contributor.thesis-supervisorDr. Judith Nyiranezaen_US
dc.contributor.thesis-supervisorDr. David Burtonen_US
dc.contributor.ethics-approvalNot Applicableen_US
dc.contributor.manuscriptsNot Applicableen_US
dc.contributor.copyright-releaseNot Applicableen_US
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