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Bertha armyworm adult trap counts suggest low to medium risk in most areas this year, with a couple higher risk hot spots in Saskatchewan — south of Regina being the largest. (See the map above.) Any need to spray is at least two weeks away. Larvae do the damage, and spraying should only occur if larvae feeding reaches threshold levels…
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Root maggots and root disease often show up together in the same field. Root maggots are white and up to 10 mm (half an inch) long — just like maggots. Maggot feeding can damage root crowns and impede water movement, causing wilting. Severe feeding can cause plant death. Severe root maggot damage can occur in fields with back to back…
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Because Serenade works differently from other fungicides, we want to share these instructions for best results, as provided by Bayer CropScience:…
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It’s looking like a hot week across the Prairies. The map above shows the highs for July 3, with many regions with highs of 30C+. (Click on the map for a bigger version.) Canola doesn’t like heat, especially at flowering. Heat can cause bud and flower blasting, resulting in blank pods and lower yield. But heat isn’t the only possible…
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The most accurate method to estimate diamondback moth population density in canola is to count larvae in several locations throughout the field, and determine the average population per unit area…
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Moisture has a much larger influence than temperature when it comes to sclerotinia risk. Infection can be high in hot weather as long as the moisture is there. Moisture can come from rain, relative humidity in the high 80s, or morning dew. Dew and high humidity can provide enough moisture for sclerotinia stem rot. If your pants get wet walking…
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As canola starts to move from flowering and into pod formation, growers will often notice blanks up the raceme where pods did not form. Here are 7 possible reasons…
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Cabbage seedpod weevil numbers are high in some regions of southern Alberta and southwestern Saskatchewan. The map shows CSPW reach for 2012. Growers and agronomists are encouraged to scout canola fields, and follow these management decision-making guidelines:…
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Many canola fields have a combination of insects feeding on the crop. An “additive” effect is possible when more than one species are feeding on key yield-producing areas — flowers, buds or pods — at the same time. For example, lygus and cabbage seedpod weevil have been found in the same fields in the southern Prairies this week. Preliminary results…
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