Insects

Some cutworm species are already quite active — dingy, for example — and can consume canola plants before they even emerge or shortly thereafter.

Early diamondback moth (DBM) eggs are hatching, and some young canola plants could begin showing “window paning” of the leaves. Spraying for DBM at

Aster leafhoppers were spotted in North Dakota, Manitoba and Saskatchewan in significant numbers this week. Leafhoppers can carry aster yellows phytoplasm, but the percentage

The Canola Council of Canada is looking for growers and agronomists willing to collect cutworms for research. Cutworms are an increasing threat to canola

If flea beetles are already out and on volunteers given the conditions we’ve had, as soon as it gets warm, they will be feeding

When the warmer weather returns, as is forecast later this week, canola still in the seedling stage that was seeded over 3 weeks ago

Have you looked closely at your flea beetles lately? Striped flea beetles may not have been a problem in your area in the past,

Striped flea beetles seem to be more common each year, especially in the northern canola growing regions. Research suggests that a population of striped

Growers cannot expect natural enemies to provide enough immediate control to reduce the pest threat to canola in that year. Growers will still have

Our current economic threshold tables for lygus in canola may be too low when applied to current canola production systems across the Prairies. If

The key messages from this station: —Keep an open mind when scouting a field for problems. Symptoms can have many causes, and it can

In general, overwintering mortality is not a major factor in reducing insect populations, but we know of a few important exceptions: