Differentiating waterhemp from other pigweed species, such as Palmer amaranth, can help growers plan the most effective weed management program. That’s because certain species respond differently to different control methods.
Identifying pigweed species correctly can be troublesome because the weeds look similar in their early growth stages, says Jeff Ellis, Ph.D., field scientist, Dow AgroSciences. Waterhemp, for example, has cotyledons that often are more egg-shaped than other pigweed species. Its leaves generally are longer and more lance-shaped.1
If waterhemp was hard to manage in your fields last season, there is a good chance it will be an issue this year. Early spring is an ideal time to scout fields and identify existing weeds that could threaten yield potential. It’s also a good time to re-evaluate your herbicide program to avoid weed escapes in the future.
Control high-anxiety weed species, such as waterhemp and Palmer amaranth, by using a preemergence, residual herbicide. Sonic® herbicide has two modes of action to effectively control weeds and protect yield potential.
For more information, visit BattleWeeds.com.
1Nordby, D., B. Hartzler, and K. Bradley. 2007. Biology and Management of Waterhemp. https://www.extension.purdue.edu/extmedia/bp/gwc-13.pdf
®Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow. Sonic is not registered for sale or use in all states. Contact your state pesticide regulatory agency to determine if a product is registered for sale or use in your state. Always read and follow label directions.
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