May 2, 2011
Lygus feeding at the bud stage is rarely an economic cost — unless the canola is under some other stress, such as drought. Stressed canola may not be able to compensate for lost buds the way a healthy crop can…
May 2, 2011
Young canola plants are vulnerable to numerous stresses, particularly flea beetles, cutworms and seedling diseases. It pays to scout often at this time of the season…
May 2, 2011
Scouting for flea beetles at field edges works early in the season when conditions are cool. With warmer weather, flea beetles will have moved throughout canola fields…
August 18, 2010
Much of southern and central Alberta and parts of western Saskatchewan still have high levels of lygus bug feeding. Lygus bug numbers are up to 10 times economic control thresholds……
July 21, 2010
Issues of the week: July 21, 2010 — Diamondback moth larvae are showing up across the Prairies, and some growers are spraying. Crops just starting to flower should be assessed……
July 21, 2010
First signs of diamondback moth larvae are larvae hanging from threads and feeding on leaves. Feeding damage is usually a mining of the leaf, giving the appearance of a “window……
July 14, 2010
Issues of the week: July 14, 2010 — Unexplained bud browning and strange plant growth has retailers and growers in the Peace unsure of the problem. Drought stress, nutrient deficiency……
July 7, 2010
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,……
July 7, 2010
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……
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