In the U.S. today, almost all states are impacted by at least one weed species that is resistant to a herbicide. Surveys show 70% of the states impacted by five or more resistant weed types. With staggering numbers like these, growers across the country are stepping back and taking an extensive look at their weed management programs to address resistance. Part of the dilemma that growers face is that in the era of ever-evolving technologies, more and more tools are emerging to combat the rising issue of weed resistance.
Best strategy is to first try to eliminate weed emergence
Chad Brommer, technical market manager and advanced weed control specialist for BASF, says that as more weed management tools and options become available, it's crucial for growers to use multiple chemistries to combat weed resistance.
"As weed resistance continues to be an issue for growers, it's important that they initiate a weed control program involving multiple effective sites of action for weed management," Brommer says. "Doing so helps ensure they're in the best possible position to keep their fields clean."
Brommer emphasizes that, for all growers, a program approach is most effective when weed emergence is prevented in the first place. "Controlling the problem before it starts is a good practice to follow when it comes to weed control," Brommer says. "It's most effective to control weeds 4 inches or smaller in height, or to use a residual herbicide to prevent weed emergence."
Use herbicides that effectively target multiple sites of action
However, using a pre-emergence herbicide to prevent weed emergence might not always be an option for growers, he notes. When this is the case, using herbicides that effectively target multiple sites of action can help growers reduce weed incidence on their operation. Today, there are currently 29 sites of action classified by the Weed Science Society of America. The BASF Advanced Weed Control portfolio currently includes 11 of these sites of action, making BASF the market leader in controlling sites of action.
"There are countless variables when it comes to farming," Brommer adds. "Taking an extensive program approach to controlling weed resistance can provide an advantage for growers and can help crops reach their maximum yield potential."
The following infographic from BASF shares steps and tips to taking a full-program approach to weed control. To learn more about the BASF Advanced Weed Control portfolio, growers can visit advancedweedcontrol.basf.us.