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The first step in canola volunteer management is to do nothing. Leaving seeds undisturbed so they germinate in the fall or get eaten by birds and insects is a good way to reduce the volunteer seedbank. Canola seeds that remain on the soil surface when the snow flies will deteriorate over the winter…
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Fall is a good time to control perennial and winter annual weeds. The message this week includes two reminders: 1. Wait for post-harvest regrowth. 2. Know the best timing for the weeds present…
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While swathing or straight combining, keep an eye out for weed escapes. Unless they are an obvious sprayer miss or are weeds not well controlled under the herbicides used on the field, they could be herbicide resistant weed patches…
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Lower temperatures and shortened days in the fall trigger perennials such as Canada thistle, dandelion and quack grass to start moving sugars to below-ground tissues. Winter annuals and biennials are also doing this, but they don’t need a cool temperature trigger. Spraying these weeds in fall takes advantage of this downward flow, providing better control for next year. Read more…
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Fall is a good time to control perennial and winter annual weeds. The message this week includes two reminders: Wait for post-harvest regrowth. And know the best timing for the weeds present. The photo shows narrow-leaved hawk's-beard…
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Foxtail barley is one weed that seems to be on the rise. Foxtail barley is best controlled in the fall, using glyphosate to manage perennial bunches and late germinating seedlings. Be aggressive with fall glyphosate rates. Tillage also works well on foxtail barley, but if you have to use tillage, spot till the patches only…
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Take these steps to control fall weeds and avoid herbicide carryover damage in fields planned for canola in 2015…
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The onset of lower temperatures and shortened days in the fall trigger perennials such as Canada thistle, dandelion and quack grass to start moving sugars to below-ground tissues. Winter annuals and biennial are also doing this, but they don’t need a temperature trigger. Spraying these weeds in fall takes advantage of this downward flow into the below ground buds on…
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1. Cleavers. Cleavers used to be pretty much an annual weed, but with more direct seeding it’s becoming more of a winter annual. The rise in winter annual cleavers may be a case of producers not applying high enough rates in the spring to manage them. Grading tolerances are fairly low for cleavers, and the weed seems to be getting…
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