Management of agricultural pesticide rinsate using a biobed under Manitoba conditions

Simple item page
dc.contributor.authorJohnson, Sarah
dc.contributor.examiningcommitteeKumar, Ayush (Microbiology)
dc.contributor.examiningcommitteeWolf, Tom (Agrimetrix Research)
dc.contributor.supervisorFarenhorst, Annemieke
dc.date.accessioned2024-05-06T16:45:06Z
dc.date.available2024-05-06T16:45:06Z
dc.date.issued2024-05-03
dc.date.submitted2024-05-03T22:02:05Zen_US
dc.degree.disciplineSoil Science
dc.degree.levelMaster of Science (M.Sc.)
dc.description.abstractA dual-celled biobed was built at the Ian Morrison N. Research farm in Carman, MB to degrade and retain the pesticides from pesticide rinsate derived at the farm. The biobed was designed for Manitoba conditions with considerations taken from existing biobeds in the Province of Saskatchewan. Temperature and moisture of the biomixture contained within the biobed was monitored using probes for the duration of the study. Three pesticides (2,4-DB, dicamba, and metrafenone) were detected in the biomixture prior to pesticide input from rinsing in 2020 but had degraded by the end of the season and were no longer detected. The Influent of the biobed was analyzed for a suite of pesticides and 23 pesticides and one pesticide metabolite were detected. In Effluent One only 11 of the 24 compounds were detected, and six compounds were detected in Effluent Two. Total pesticide concentrations significantly decreased for Influent > Effluent One > Effluent Two. Pesticides detected in the effluents tended to have higher GUS or Koc values. In 2021, a large influx of prepared spraying liquid containing glufosinate (approximately 680L) overburdened the biobed and resulted in reduced degradation and increasing mean concentrations from Influent > Effluent One > Effluent Two. Glufosinate and seven other pesticides detected in the influent were not measured in biomix due to method limitations. There were three pesticides (bifenthrin, trifloxystrobin, and diuron) detected in the biomixture samples in 2021, and only diuron, which had the highest GUS and Koc values, was still detected at the end of the season.
dc.description.noteMay 2024
dc.description.sponsorshipNatural Science and Engineering Research Council of Canada (NSERC) Canadian Agricultural Partnership (CAP)
dc.identifier.urihttp://hdl.handle.net/1993/38203
dc.language.isoeng
dc.rightsopen accessen_US
dc.subjectbiobed
dc.subjectdual-cell
dc.subjectsingle-cell
dc.subjectpesticide
dc.subjectpesticide rinsate
dc.subjectrinsate management system
dc.subjectrinsate management
dc.subjectbiomixture
dc.titleManagement of agricultural pesticide rinsate using a biobed under Manitoba conditions
dc.typemaster thesisen_US
local.subject.manitobayes
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Johnson_Sarah MySpace.pdf
Size:
4.21 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
770 B
Format:
Item-specific license agreed to upon submission
Description:
Download
Collections
FGS - Electronic Theses and Practica
Manitoba Heritage Theses