Scouting Weeds Builds Consistent Corn Herbicide Programs

Tuesday, June 28, 2016
By: Mark Waddington, Selective Herbicides Product Development Manager
Make weed control happen every season

Weed control used to be simple. Previous decades made one-and-done the norm.  Roundup Ready® crops were all anybody needed.  It provided sufficient control, and most growers felt time spent scouting for weeds was best-used elsewhere – until weeds became resistant.

This concept that you did not plan on and could not possibly foresee threatened your success.

An Evolution Over Time

Now, year-round scouting for weeds has become more important than ever. Not only for in-season success, but it is essential to year-over-year planning.

An evolution over time, weed scouting has become more than just seeing weeds and pointing out escapes. It’s recognizing consistent issues or diagnosing weed shifts. It’s identifying resistance to chemistries and planning for effective weed control programs that protect fields for years to come.

If done correctly, a diligent program that accounts for all the aforementioned can limit weed pressure beyond this year and next. But it takes work and dedication to scouting.

Note When Specific Weeds Begin to Show

As you scout each year, it’s important to note when weeds begin to show. Species like giant ragweed will usually show prior to planting, while waterhemp and morningglory will show after your corn has emerged.

As you gather this information, over time, you can begin to develop an airtight corn herbicide program that accounts for these growth periods. And remember, it’s never too early to develop a plan. Corn & Soybean Digest notes how easy it is to forget even the slightest details when scouting for weeds. These details can add up to big consequences. So be diligent and keep detailed records of what you see in your fields, where it afflicts your crops and what time of year it occurs.

For example, if your field has early emerging weeds, such as lambsquarters, Corvus® herbicide is a valuable tool to control the weeds and help get your field off to a clean start. With two modes of action (Groups 4, 27), Corvus is labeled to control more than 65 grass and broadleaf weeds.

If a weed like fall panicum shows up after your corn has emerged, consider a postemergence application of a product like Capreno® herbicide. With two modes of action, (Groups 4, 27) Capreno provides complete postemergence control of more than 60 grass and broadleaf weeds. For potentially resistant weeds, another solid post option is DiFlexx® Duo (Groups 2, 27) that uses a unique HPPD with the power of dicamba and patented CSI® safener.

Take Advantage of All the Resources Out There

As you begin to implement these techniques, remember you’re not alone. There are loads of resources to help you in your weed control plight. University research and compiled data can assist your efforts year-over-year.

So get out there and get scouting!


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