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Parts of the Swan River Valley were spraying for Bertha last week and now are contending with diamondback moth. Second generation larva and cocoons are being found in other areas (Arborg in Manitoba and parts of north and eastern Saskatchewan) and these populations continue to be monitored. The threshold for diamondback larvae is 200 per meter square at today’s canola…
Canola Watch Posts
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Numbers of adults in southern Alberta range between 3 to 4 per sweep but the majority of fields are completely out of flower. Spraying this late in the season is not economical because…
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Cabbageworm larva populations are quite heavy in the central corridor on the western side of Saskatchewan and unprecedented amounts of adults can be found…
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Parts of the Peace are seeing grasshoppers migrate from other crops into field edges…
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Cooler overnight temperatures (in the neighborhood) of 1 to 2 C occurred overnight Monday into Tuesday in parts of Alberta. These cooler temperatures will not affect canola crops significantly. Growth chamber research shows that seed enzyme effects could be impeded with temperatures at 1 C which resulted in higher green seed…
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Seed colour change is an indication of moisture dry down. The following is an estimate of canola seed dry down rates during ripening based on research of weather conditions during mid-August to early September in different areas across the Prairies…
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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:…
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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…
