Canola Digest 2016 Science Issue
Science

Aster yellows: Seed treatment benefit; rating damage

Key result: The study found that seed treatment can reduce leafhopper feeding and therefore suppress aster yellows (AY). It also produced a five-point rating scale to score canola plants for AY damage and help predict yield loss. Project title, Principal investigators: “Seed treatments as an alternative method of controlling leafhoppers and aster yellows disease in...
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Science

Identifying and controlling cutworms

During cutworm outbreaks, accurate and rapid identification is required to maximize control methods.
Key result: A pest complex of economically significant cutworm species can be found on the Prairies, and outbreaks seem to be occurring with greater frequency. This study has resulted in a DNA protocol for quick, accurate identification of cutworm species; identification of natural enemies and evaluation of their ability to develop on different cutworm species;...
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Science

Consider seed size when targeting optimum plant stand

Key result: Seeding rates should be established based on 1,000-seed weight, using an on-line seeding rate calculator or on-line apps. Project title, Principal investigator: “Seed size and seeding rate effects on canola yield and quality,” Neil Harker, Agriculture and Agri-Food Canada Lacombe Funding: Alberta Canola, MCGA, SaskCanola, CCC, AAFC, GF2 Recent surveys indicate that approximately...
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Science

EC cannot help make VR strategies more consistent

Key Result: While soil electrical conductivity (EC) measurement is a strong indicator of soil clay and moisture content, it cannot help to make variable rate (VR) fertilizer programs more consistent. Producers using VR should be prepared to use a specific strategy for each field each year. Project title, Principal investigators: “Understanding soil variability for effective...
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Science

Herbicides that could improve cleavers control

Cleavers species are difficult to control and can cause downgrading and reduce crop quality.

It is important to note that, as of October 2016, clomazone is not yet registered and quinclorac should not be used on canola due to maximum residue limit (MRL) issues. Until exporters and processors are confident that they can ship quinclorac-treated canola without trade concerns, growers are advised to avoid this marketing risk by using other cleavers control methods. Learn more at keepingitclean.ca/canola.

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