Note from the GROW team: This page is being updated in an effort to provide you with the most accurate and timely information. In the meantime, please visit the rest of our website to learn more about the tactics to manage herbicide-resistant weeds.

Barnyardgrass is an agronomic issue in rice in south-central states, but its distribution ranges through many US states. In rice, rotating with soybean can help manage barnyardgrass populations by introducing more management options. Effective control during the soybean rotation is important for continued depletion of the population – otherwise the positive effects of rotation are negated.

Resistant populations:

  • Group 2
  • Group 4
  • Group 5
  • Group 7
  • Group 9
  • Group 13
  • Group 7 + 2
  • Group 1 + 8
  • Group 1 + 2 + 7 + 26

For more information on barnyardgrass management, visit:



IWM best practices are constantly changing and it is GROW’s goal to keep you up to date on the science and advice that best combat herbicide-resistant weeds. Sign up below to stay up to date.

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Other Weeds

Mustard Species in Wheat
Rush Skeletonweed
Russian Thistle