By WCM Staff on 7/26/2007 11:23 AM

As wheat is currently being harvested, I have received several inquiries with regard to volunteer wheat management in summer seedings of alfalfa.

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By WCM Staff on 7/18/2007 2:07 PM

Recent discussions of weed management in soybeans are often centered around glyphosate, rates, weed heights, and application timing. If the initial glyphosate application controls all of the emerged weeds, it would be ideal if the soybean canopy was developed sufficiently to shade out weeds that emerge later. Thus, we should consider the light conditions that a young weed seedling experiences.

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By WCM Staff on 7/6/2007 10:41 AM

NPM recently completed the development of 2007 reference guides for use with the NRCS 595 Pest Management Standard. They cover apples, cherries and cranberries. corn, soybean, alfalfa and potatoes.

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By WCM Staff on 7/6/2007 10:34 AM

The judge has amended several regulations from his final ruling on May 3rd 2007. While the amendments do not change the restrictions on planting Roundup Ready alfalfa, they clarify some restrictions to the harvesting of Roundup Ready alfalfa already planted before the injunction and cleaning of equipment.

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By WCM Staff on 7/6/2007 10:28 AM

We have an opportunity to prevent the establishment of a new herbaceous perennial weed, perennial pepperweed (Lepidium latifolium L.). A small population of this plant was recently discovered along a roadside in Green Bay.

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By WCM Staff on 6/14/2007 10:19 AM

Although a little late for winter annuals and perennials, the Wisconsin Weed Garden is now officially open for business.

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By WCM Staff on 6/13/2007 12:19 PM

Although it is hard to say report anything good about a troublesome weed like waterhemp, Illinois weed scientists recently reported good news on how rapidly waterhemp dissipates from the seedbank.

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By WCM Staff on 6/13/2007 12:07 PM

Over the past several days, I’ve noticed several corn fields that are over-due for postemergence weed control.

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By WCM Staff on 6/7/2007 1:11 PM

Jerry taught this six-week course 30 times to students in the UW College of Agricultural and Life Sciences Farm and Industry Short Course Program. His presentations have been specially recorded for this DVD in Flash Player format.

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By WCM Staff on 6/7/2007 1:09 PM

In Wisconsin, weed resistance to glyphosate has not been confirmed, but there have been many reports of variable or inconsistent responses of common lambsquarters to glyphosate in Roundup Ready soybean fields.

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By WCM Staff on 5/31/2007 11:47 AM

Here are a few weeds that have been sent in for identification in the past couple weeks. Test your weed identification skills before looking at the answers below.

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By WCM Staff on 5/31/2007 11:44 AM

Dust could affect glyphosate’s activity because glyphosate is tightly bound by soil, which is the reason why glyphosate lacks residual activity. On a leaf, the glyphosate could bind to the dust and not be available to be absorbed into the leaf.

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By WCM Staff on 5/31/2007 11:33 AM

I have received a few calls about the need for residual activity with postemergence herbicide applications in corn. I’m going to focus on grass weeds, which were the basis for the calls. Article by Chris Boerboom, Extension Weed Scientist

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By WCM Staff on 5/24/2007 11:26 AM

A new invasive mustard called Hill mustard has recently been observed spreading throughout the southern part of the state.

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