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You maybe went to a field to scout for flea beetles, but take time to look around. Consider all possible causes when you notice uneven emergence, patchy growth and unthrifty plants. Get a second opinion when necessary. You need to know what caused a problem before you can take effective corrective action…
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When scouting, take time to check the plant stand. Look for blank areas and also look for thin areas. The plant…
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Gophers can eat up large areas within a canola field. Strychnine baits and, in some jurisdictions, mix-it-yourself strychnine liquid is available for gopher control. Phostoxin is also registered for gopher control, but this is a restricted use product that requires a special permit for purchase and application…
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Canola is quite susceptible to water logging and shows a yield reduction after only three days with wet feet. If only a small percentage of the field is lost, reseeding may not pay off — especially if that small percentage includes a bunch of pot holes all across the field. And wait to see how the crop recovers from saturated…
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Early season scouting is the theme of the week. Most canola crops are seeded and many have emerged. Canola plants face various threats in these first few weeks, including weed……
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In-crop weed control should occur as early as possible since canola is much more vulnerable to weed competition prior to reaching complete ground cover. Past research has demonstrated an advantage of 3 bu./ac. for controlling weeds at the 1-2 leaf stage of canola versus 3-4 leaf, and a 7 bu./ac. advantage versus 6-7 leaf. At $12 per bushel, that’s $36…
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Blackleg lesions are already showing up on some canola fields. In high risk fields, consider fungicide as an additional tool to limit infection and yield loss. Headline, Propiconazole (Bumper, Pivot, Propel, Tilt) and Quadris are registered for blackleg management in canola…
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Some cutworm species are already quite active — dingy, for example — and can consume canola plants before they even emerge or shortly thereafter. Dingy cutworms will also eat wheat, barley and peas, so scout all crops. Scout bare or clipped patches, digging around in the border areas between missing plants and healthy plants. That’s where the cutworms will be…
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Early diamondback moth (DBM) eggs are hatching, and some young canola plants could begin showing "window paning" of the leaves. Spraying for DBM at this stage is rarely needed but it has happened. Consider a spray if between 25% and 33% of the plant material is eaten or damaged, and larvae are still present on the plant…
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