Return to Canola Council Home
Pest updates | Satellite imagery for early insight on yield | Prep for disease scouting…
Questions of the Week
July 31, 2024
Bertha armyworm
-
-
Insect update: Spray or not?
August 19, 2020
Numbers for August-emerging flea beetles have to be very high — perhaps 100 per plant — before economic losses occur. Some patches might be that high…
-
Bertha armyworm: Time to scout
August 6, 2020
Adult trap counts show a few potential hot spots for larvae feeding, but numbers can be quite different field to field. Check each field!…
-
Bertha armyworm: Updates and scouting tips
July 29, 2020
Even if an area is low risk according to provincial risk maps, local hot spots can flare up – which is why each farm should make its own assessment on a field by field basis…
-
Pod eaters: Scouting tips and thresholds
July 22, 2020
Check pods for feeding from bertha armyworm, diamondback moth larvae, lygus and other pests. If any pod feeders are found, make accurate counts in at least three locations 50 metres apart in each field. Then make spray decisions based on thresholds…
-
Bertha spraying and pre-harvest intervals
September 5, 2019
A full-fledged bertha armyworm outbreak continues in the Peace region. Continue scouting, noting that fields at thresholds can be right beside fields with low counts…
-
Bertha armyworm at thresholds in Peace
August 28, 2019
Bertha armyworm numbers are at thresholds in more Peace-region canola fields this week. Growers in the Birch Hills, Saddle Hills and Northern Sunrise areas in particular are encouraged to scout…
-
Insect update
August 21, 2019
As predicted by moth traps, the Peace region has fields at thresholds. Beyond there, a few field here and there across the Prairies have been sprayed but the worm is not a problem on most fields…
-
Look for berthas
August 8, 2019
The bertha armyworm risk is fairly low across most of the Prairies, but the insect pest is at high numbers in localized areas. These infestations can occur even when adult traps in the area had counts within the ‘low’ risk range, so scouting is recommended everywhere…