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4 Tips to Tackle Tough Weeds

March 24, 2010
By: Sara Schafer, Farm Journal Media Business and Crops Editor

Pam Smith, Farm Journal Seeds & Production Editor
Are your fields furry this spring? A late harvest, limited tillage and a wet spring have turned many into a garden salad of weeds.


Dan Westberg, BASF Technical Marketing Manager, offers the following tips on how to utilize the company's new burndown herbicide to get things under control:


Tip #1: Select a fast-action burndown herbicide

"All indications point to a compressed spring this year, with a lot of work to do in a very short period of time,” says Westberg. "Selecting a herbicide that provides fast, complete burndown without preplant restrictions is critical for preparing no-till fields for planting in a limited amount of time.”

BASF is launching Kixor herbicide technology this spring. The new active ingredient offers fast, effective burndown of broadleaf weeds like marestail, giant ragweed, and common lambsquarters without the hassle of preplant restrictions. Older products such as 2,4-D require a restriction of one to two weeks between its application and planting corn or soybeans. This restriction, coupled with its slow activity, creates uncertainty in grower's minds. Westberg says Kixor is three to five times faster than 2,4-D and glyphosate and has no preplant restriction, with the exception of soybeans grown on coarse soils with less than 2 percent organic matter.
Tip #2: Apply your herbicide and liquid fertilizer in one application

Late harvest and wet, cold conditions prevented fall fieldwork and fertilizer applications in 2009 pushing these critical activities to the spring. If growers also face a wet spring, the available time for these activities will be further shortened. Westberg recommends growers work with their retailer to select an herbicide that is compatible with liquid fertilizer.

Kixor herbicide technology is actually three separate corn and soybean products powered by a new active ingredient. The unique chemistry inhibits a key step in chlorophyll biosynthesis, called protoporphyrinogen IX oxidase (PPO), resulting in fast, effective control of broadleaf weeds.
Integrity herbicide for corn, which is member of the Kixor family, is compatible with liquid fertilizer. Westberg says this feature, coupled with its ability to provide burndown and residual in one product, allows growers to achieve multiple objectives in one application.
Tip #3: Add operational efficiencies with low use-rate herbicides

"Taking all of the fall fieldwork and combining it with your normal spring fieldwork is a daunting task,” Westberg notes. "Growers can save significant time and effort with low use-rate herbicides, which offer efficient storage, transport and handling.”

Integrity requires roughly a quarter of the application rate compared to the older, traditional preemergence products based on atrazine. This translates to only six mini-bulks to cover 5,000 acres, as opposed to 24 mini-bulks of some of the older technologies for the same acreage.
Tip #4: Know your weed pressure risk

"In some areas of the country last year, growers experienced severe weather that resulted in acres that were hailed or drowned out,” Westberg says. "If left alone, weeds often take over these areas due to the lack of crop competition and produce a lot of seed that is often spread throughout the field and neighboring fields by equipment.” These areas are ripe for a sequential preemergence herbicide application, followed by a post weed control system to get fields back on track.

Integrity is a premix of Kixor plus dimethenamid-p for broad spectrum broadleaf and grass control in corn. OpTill  herbicide, a premix of Kixor plus imazethapyr, is  for burndown plus residual control in soybeans. Sharpen herbicide is a solo formulation of Kixor for fast, flexible broadleaf burndown in wide range of crops.
More information on the products can be found at

Listen in as Dan Westberg discusses the launch of Kixor and how growers can use it in their operations this growing season:



You can email Pam Smith at

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