Home / Canola Watch / Insects / Page 24
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Cabbage seedpod weevils are one example of an insect where crop stage is a factor in the management decision. Weevils lay their eggs in developing pods, and these larvae feed on canola seeds inside the pods. The rule of thumb is pods less than 3/4” are too small for egg laying. If some plants are forming pods and the rest…
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Bud damage and insects are being found together in some canola fields, but that does not mean insects are the primary reason for the damage. Take a moment to assess the damage before making unnecessary or poorly timed insecticide applications. Key points to consider…
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Grasshoppers. If populations are significant and crop feeding has begun, a spray or bait application around field edges may be enough to reduce the threat. Grasshoppers are easier to manage……
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How well can you identify the most common cutworm species found in Canadian canola crops?…
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Flea beetles remain the single biggest insect threat this week, although pressure seems to be waning. Cutworm losses have been reported in a few fields across the Prairies, but damage is usually patchy within a field and nearby fields might not have any losses. The key with all insects is to scout and count and adhere to economic thresholds for…
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Under hot conditions the metabolism of (some) target insects is significantly faster. Control of the pest is more complete when the metabolism of the pest is slower which is generally associated with cooler or moderate temperatures. It is also known that control of some insect species with pyrethroid insecticides decreases as temperature rises. Some pests are also more available in…
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Test your flea beetle management skills…
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Cutworm scouting begins with a walk through the field looking for bare patches, chewing damage in foliage, or clipped plants. Cutworms and cutworm damage is one thing to look for while scouting this week…
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Combining pest control operations to save trips over the field may seem like good economic sense, but consider the following when making this decision…
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