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Pest updates | Satellite imagery for early insight on yield | Prep for disease scouting…
Bertha armyworm
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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… -
Adult trap counts show a few potential hot spots for larvae feeding, but numbers can be quite different field to field. Check each field!…
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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… -
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… -
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…
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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… -
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…
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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…
