Winter canola is considered the most promising domestically produced oilseed feedstock for the biodiesel industry and for diversifying wheat-based cropping systems in the Inland Pacific Northwest. Winter canola field experiments conducted in east-central Washington were completely destroyed and commercial fields were damaged over several years by large flocks of horned larks that ate the cotyledon leaves of preemerged and newly emerged seedlings. Numerous control strategies were attempted in field experiments, including laying bird netting over the entire experiment, placing a lifesize predator decoy in a field experiment, blasting a loud propane-powered cannon, and mixing garlic with canola seed before planting followed by spraying garlic water on the soil surface. None of the attempted control methods were successful. This is the first report of horned lark damage to preemerged and newly emerged canola seedlings. We discuss questions relevant to our unique encounter and non-lethal chemical repellents for the protection of canola crops associated with horned lark depredation.
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Title
First report of horned lark damage to canola seedings
Creators
William F. Schillinger (Author)
Scott J. Werner (Author)
Academic Unit
Publications, WSU Extension
Series
Fact sheet (Washington State University. Extension); 237E
Publisher
Washington State University Extension; Pullman, Washington
Identifiers
99900501867601842
Copyright
In copyright ; openAccess ; http://rightsstatements.org/vocab/InC/1.0/ ; http://purl.org/eprint/accessRights/OpenAccess