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Sclerotinia management: What is 20% flower?
Fungicide to protect the crop from sclerotinia stem rot infection must be applied to petals before infected petals start to drop into the canopy. Petal drop starts after 30% flower,……
Latest Issue | November 13 2024, Issue 27
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Consider split application for multi-stage crop
If crop staging is widely variable and if fungicide is needed to prevent sclerotinia stem rot, a split application may be worthwhile. The first application can be made when the…… -
Tips to control multiple insect species at once
If a field has cabbage seedpod weevil and diamondback moth feeding, should economic spray thresholds be reduced to account for the combined pressure? In the case of these two species,…… -
Keep malathion out of canola bins
As bins are prepared for the coming harvest, keep in mind that using malathion on canola seed or in canola storage bins will result in detectable levels of malathion residue…… -
Insect threat builds
Issues of the week: June 30, 2010 — Lygus spraying starts in the Peace, cabbage seedpod weevil spraying starts in the southwestern Prairie, and we’re all on diamondback moth alert.…… -
Crop and weather update
Peace (B.C. and Alberta): Dry and hot conditions the past week add to drought stress. South and central Peace regions really need rain. Most canola fields are at bolting to…… -
Lygus spraying starts in Peace
Some Peace fields have 4-5 adults per sweep, prompting many farmers to spray at the bud stage. This is earlier than normally recommended, but with drought stress, canola may…… -
Good conditions for sclerotinia stem rot
Spraying to prevent sclerotinia stem rot has started in Manitoba and many canola fields across the Prairies are coming into the spray window — 20% to 50% bloom. With…… -
Watch for blackleg on leaves
Blackleg presence is higher than usual on canola in Manitoba and southeastern Saskatchewan. If you see grey lesions with black picnidia (peppery spots) on leaves, monitor the field. The……
