Wisconsin Crop Manager newsletter

Author:	WCM Staff	Created:	4/21/2006 11:13 AM
Weed woes

Cattail Control in Corn

By WCM Staff on 5/21/2009 11:48 AM

Last year’s wet summer brought a new weed to many corn fields this year – cattail. Controlling this new weed will be a challenge in some cases. Obviously, cattail will establish in wet or flooded portions of fields.

Field Horsetail ID and Management in Field Corn

By WCM Staff on 5/14/2009 11:50 AM

Field horsetail (Equisetum arvense) is a unique, native perennial weed. The plant is unique because it grows brown fertile shoots early in the spring that produce spores, not seeds.

Don’t Forget about Horseweed

By WCM Staff on 5/7/2009 8:31 AM

Although this spring has been cool and some weeds are growing slower than typical, this is one winter annual weed that needs timely management and shouldn’t be ignored.

Purple Deadnettle in No-till

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.

Herbicides to suppress smooth brome

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...

Be Aware of Grapes and 2,4-D Drift

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.

Flexstar GT labeled

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.

Ready to Tackle Lambsquarters?

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.

Perplexing Replant Interval Question

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

Herbicide applied to corn: Keystone LA

Next planting: Wild flowers and prairie grasses

2009 Corn and Soybean Herbicide Updates

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.

Waterhemp Management – Advice from Missouri

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.

Herbicide Product Conversions

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.

Wisconsin winning against glyphosate-resistant weeds

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.

Defeating Weeds in Corn

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.