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…
Flea beetle
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Trap counts are showing higher numbers of diamondback moths in a few areas, but this just means that the moths have arrived, and is not necessarily a cause for concern. Flea beetle scouting is more important this week… -
The action threshold for flea beetles in canola crops in Canada is an average leaf area loss of 25 per cent or more. How do you make that assessment?… -
Four questions that will help with your approach to flea beetle scouting and risk assessment… -
Cutworm feeding results in notched, wilted, dead or cut-off plants. Patches of missing plants could also be cutworms. Include cutworms on the scouting checklist for the first one to three weeks after emergence… -
Jim Tansey and Keith Gabert talk about flea beetles – including how far they travel to find the first canola crops, major differences between striped and crucifer species, and how long the risk can last…
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Striped flea beetles tend to emerge earlier than crucifer flea beetles, and some are already feeding on canola volunteers. Are first-emerging crops at higher risk?… -
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… -
The flea beetle situation seems worse than usual. The simplest reason seems the most logical: Warm and dry weather favours flea beetle emergence and activity. The same dry weather slows crop growth, leaving plants at a vulnerable small size for longer…
