Weeds and ground beetles (Coleoptera: Carabidae) as influenced by crop rotation type and crop input management

dc.contributor.authorHumble, Shauna Marieen_US
dc.date.accessioned2007-07-12T17:49:53Z
dc.date.available2007-07-12T17:49:53Z
dc.date.issued2001-06-01T00:00:00Zen_US
dc.degree.disciplinePlant Scienceen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractWeeds and ground beetles are bioindicators of cropping system sustainability. In 1992, a study was initiated near Winnipeg to determine how cropping system diversity and input use affect populations of weeds and ground beetles, and the association between weed and ground beetle populations. Three, four-year rotations (rotation 1 = annual crops only; rotation 2 = annuals plus one green manure crop; rotation 3 = annuals plus two year alfalfa hay crop) were subdivided into four subplots based on fertilizer (f) and herbicide (h) use (all four combinations: f+h+, f+h-, f-h+, f-h- in each rotation type). A prairie grass system was included in each of three replicates. A common test crop (flax ['Linum usitatissimum' L.]) was seeded in all plots at the end of each rotation cycle (1995; 1999). Plant growth, crop yield, weed and ground beetle diversity weed populations and ground beetle activity, were assessed each year and subjected to univariate analysis. Weed populations and ground beetle activity for 1995 to 1999 were analyzed using multivariate redundancy analysis (RDA). (Abstract shortened by UMI.)en_US
dc.format.extent12125696 bytes
dc.format.extent184 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.identifier.urihttp://hdl.handle.net/1993/2584
dc.language.isoengen_US
dc.rightsopen accessen_US
dc.titleWeeds and ground beetles (Coleoptera: Carabidae) as influenced by crop rotation type and crop input managementen_US
dc.typemaster thesisen_US
Files
Original bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
MQ62758.pdf
Size:
11.56 MB
Format:
Adobe Portable Document Format
Description:
License bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
license.txt
Size:
184 B
Format:
Plain Text
Description: