By now you’re fully aware of the importance of monitoring insect pests in your canola. So, you’ve collected and assembled your sweep-net, now what?
The standard technique for sweeping is one 180 degree sweep for every quick step through the canola field (accompanied by the odd fall, of course). Sounds simple (and perhaps slightly embarrassing), but how do you then count what we’ve caught? And what are all those critters?
In this video, John Gavloski, provincial entomologist for Manitoba Agriculture, Food and Rural Initiatives, demonstrates some sweep-net basics, including: how deep to sweep, careful counting and how to identify some of the common insects pests of canola.
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