Category Archives: Weeds

Bring your biggest weed to Farm Technology Days

Mark Renz; Extension Weed Specialist Mild temperatures and ample rainfall have resulted in another year of rampant weed growth in Wisconsin fields. Did some of the weeds on your farm not get controlled? Are they now big? If so bring … Continue reading

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Arlington Weed Garden in “Full Bloom”

Mark Renz, Associate Professor and Extension Weed Specialist, University of Wisconsin-Madison I would like to officially invite people to view the weed garden at the Arlington Agricultural Research Station this summer (N695 Hopkins Road, Arlington WI 53911). This “garden” has … Continue reading

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Herbicide resistance management for common lambsquarters and horseweed

Liz Bosak, Outreach Specialist, Department of Agronomy, University of Wisconsin In the June 13th issue of the Wisconsin Crop Manager, I discussed herbicide resistance management for giant and common ragweed, http://wcws.cals.wisc.edu/herbicide-resistance-management-for-giant-and-common-ragweed/ . This week’s featured herbicide resistance threats are common … Continue reading

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Herbicide Resistance Management for Giant and Common Ragweed

Liz Bosak, Outreach Specialist, Department of Agronomy, University of Wisconsin Weed scientists across the Midwest and Mid-south have identified eleven species of weeds that are of most concern for herbicide resistance because of their ability to compete with crops and … Continue reading

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Pest Management Fast Facts Updated

The popular publication Pest Management Fast Facts produced by the Nutrient & Pest Management (NPM) and the Integrated Pest Management (IPM) Programs has been revised. This useful four-page publication contains pest management thresholds and management options for corn, soybean, alfalfa, … Continue reading

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Post-emergence herbicides for corn and soybean

Liz Bosak, Outreach Specialist, Department of Agronomy At this time of the year, integrated weed management programs focus on scouting and diversifying management practices including non-chemical methods and herbicide sites-of-action. For more information, please visit the United Soybean Board’s TakeAction … Continue reading

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Pigweed Identification

Liz Bosak, Outreach Specialist, Department of Agronomy, University of Wisconsin-Madison Weed identification at the seedling and immature stages can be difficult but is often necessary because scouting should occur before weeds reach 4 inches in height. At emergence before a … Continue reading

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Which thistle is in my pasture and how to control it…..

Mark Renz Extension Weed Specialist; University of Wisconsin-Madison & Extension Thistles are all up and actively growing. While we have a variety of thistles, typically pastures have one of 5 common weedy thistles in Wisconsin. Not sure which one? The … Continue reading

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Pre-emergence Herbicides for Weed Management in Soybean

Liz Bosak, Outreach Specialist, Department of Agronomy, University of Wisconsin-Madison Pre-emergence herbicides can lower the risk of developing herbicide resistance and add flexibility to the post-emergence application timing. For an excellent discussion of how a two-pass herbicide program can reduce … Continue reading

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Scout your fields for weed seedlings this spring

Liz Bosak, Outreach Specialist, Department of Agronomy The fields may look cold, wet, and dormant this week but weeds were germinating in some fields in Janesville and Arlington last week. On April 17 at Janesville, common lambsquarters, giant ragweed, and … Continue reading

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