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As crops near maturity, the risk of frost is watched closely especially this year with late crops and late stages within fields. If a grower wants to cut a relatively late crop to avoid frost damage, consider the following:…
Canola Watch Posts
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Relatively low levels of sclerotinia infection can be found in most areas except in heavy and late maturing crops in northwest Saskatchewan where disease pressure is high due to frequent rains through the flowering period. Higher amounts of alternaria are occurring in B. juncea and B. rapa in western Saskatchewan and in B. napus fields in eastern Manitoba. In eastern…
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Malathion CANNOT be used to treat bins where canola will be stored or to treat canola as it goes in to storage. These applications can result in residues in the canola that are unacceptable in some of Canada’s key export countries with low minimum residue limits (MRLs) or zero tolerance for malathion…
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Swathing is about to become general in Manitoba and proper timing is tricky in parts of Saskatchewan and Alberta because of variable staging. The following are some tips to help……
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Insects are the hottest topic this week, with managing uneven maturity at swathing and harvest a close second. Before spraying those insects, make sure the target insect is properly identified……
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Peace (B.C. and Alberta): Rain fell across the whole region in the past week, with accumulations of three tenths to half an inch. Many areas still have standing water in……
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Before spraying, make sure the worms feeding on your canola are actually the species you think they are. Bertha armyworm, diamondback moth larvae and cabbageworms can be confused. Here's how to tell the difference:… -
Economic spray thresholds are calculated based on individual species. We don’t have scientific evidence to combine thresholds, but where an “additive” effect of multiple species can make sense is when more than one species are feeding on key yield-producing areas — flowers, buds and pods — at the same time. For example, if you have lygus bug and cabbage seedpod…
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Thresholds for lygus bugs and cabbage seedpod weevil, for example, are based on a specific sweep net technique. If you’re not doing a complete 180° pattern, walking while you sweep, and keeping the net near the top of the canopy, your counts could be significantly different from someone using the recommended techniques…
