By WCM Staff on 4/29/2009 11:46 AM

Purple deadnettle is not a common weed for Wisconsin, but it might be one weed to be familiar with. These pictures were sent from Iowa County, where it was not controlled well with glyphosate in the past. 

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By WCM Staff on 4/29/2009 11:34 AM

Research conducted in 2008 evaluated the effectiveness of various herbicide treatments and compared them to disked and untreated areas.A brief description of the experiments and initial results are summarized...

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By WCM Staff on 4/23/2009 8:44 AM

This is a concern in certain regions of Wisconsin because grape vineyards are either an established or expanding crop. The potential sources of 2,4-D can be from 2,4-D used in burndown applications to field crops, 2,4-D applications to pastures, or even 2,4-D applications to lawns.

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By WCM Staff on 4/23/2009 8:38 AM

Syngenta has registered Flexstar GT for postemergence weed control in Roundup Ready soybeans. Flexstar GT is a premix of the ingredient in Flexstar (fomesafen) and glyphosate.

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By WCM Staff on 4/9/2009 10:23 AM

The common lambsquarters season is almost here. Are you ready? It may seem odd to discuss the growing season as a lambsquarters season, but most if not all fields in Wisconsin have common lambsquarters. So, everyone will deal with lambsquarters, one way or another. 

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By WCM Staff on 4/2/2009 1:46 PM

Herbicide applied to corn: Keystone LA

Next planting: Wild flowers and prairie grasses

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By WCM Staff on 4/2/2009 1:41 PM

The list of new herbicides or rate changes for 2009 is relatively short and there are no new ingredients or modes of action to report for Wisconsin.

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By WCM Staff on 3/12/2009 12:41 PM

My weed science colleagues at the University of Missouri have many years of experience in managing waterhemp, including waterhemp biotypes that are glyphosate, ALS-, and PPO-inhibitor resistant. This winter they published a new bulletin focused on waterhemp management in corn and soybean.

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By WCM Staff on 3/12/2009 12:35 PM

Unless a person deals with these types of calculations frequently, they may be a challenge. With this article, I will demonstrate how you can make these types of conversions and the information that you need.

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By WCM Staff on 3/12/2009 12:30 PM

During the past five years, no cases of glyphosate-resistant weeds have been documented in Wisconsin while most other Midwest states have reported one or more glyphosate-resistant weeds such as giant ragweed, common ragweed, waterhemp or horseweed.

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By WCM Staff on 2/12/2009 3:04 PM

The goal of weed management is to maximize corn yield potential. Killing weeds is just a necessary step to achieve that goal.  Of course, the critical part in reaching the goal of yield protection is killing the weeds on time, which leads to two interesting observations about weed management in Wisconsin.

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By WCM Staff on 1/15/2009 12:00 AM

The need to diversify weed management programs and protect the value of glyphosate became a consistent message of extension weed scientists soon after the adoption Roundup Ready ®crops. To put a fresh spin on this message, we pooled our thoughts to come up with a light-hearted look at this serious issue.

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By WCM Staff on 1/15/2009 12:00 AM

Dupont is launching Accent Q in 2009, which is a new formulation of Accent that contains the safener isoxadifen. This safener is also in the herbicides Laudis, Option, and Status and functions by increasing the rate that a corn plant can metabolize specific herbicides.

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By WCM Staff on 10/9/2008 12:54 PM

The database contains 280 of the most common weeds/invasive plants found in agricultural, urban, and natural settings in Wisconsin. The database can be accessed (for free) by going to the website http://weedid.wisc.edu

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