Damage ID

August 13, 2014 - Issue 19

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Growers and agronomists are observing fields with blackleg and possibly also root rot on the same plants, root rot and root maggots together, and what could be aster yellows — but may be swede midge damage.

Identifying the factors causing the damage can be difficult, but important. Management of a problem usually requires accurate identification of what caused the problem in the first place. Identification will also determine whether a problem is worth a reassessment of management practices (discovering clubroot will change the way a field is managed), something without effective management practices (aster yellows), or something new to a region that is worth identifying and alerting local experts (swede midge, clubroot).

To identify a problem, start with careful scouting. Use this checklist and then move on to the Canola Diagnostic Tool.

Canola Watch