Waterhemp continues to be one of the most problematic weeds for Iowa farmers. A higher frequency of waterhemp escapes was observed in Roundup Ready soybean fields during 2001 than in previous years. Control failures may be caused by unfavorable weather, tolerant/resistant biotypes, improper application timing, poor spray coverage, and late emergence. Sorting through these variables can be difficult, but is important in adjusting management programs to avoid repeat problems.
Iowa State University
Hartzler, Robert G., "Factors leading to inconsistent waterhemp control" (2002). Integrated Crop Management News. 1836.
The Iowa State University Digital Repository provides access to Integrated Crop Management News for historical purposes only. Users are hereby notified that the content may be inaccurate, out of date, incomplete and/or may not meet the needs and requirements of the user. Users should make their own assessment of the information and whether it is suitable for their intended purpose. For current information on integrated crop management from Iowa State University Extension and Outreach, please visit https://crops.extension.iastate.edu/.