Barnyardgrass

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.

Photo
Barnyardgrass, Echinochloa crus­galli (L.) infestations in rice can result in detrimental yield losses ranging from 30 percent to complete croploss.

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:
https://iwilltakeaction.com/weed/barnyardgrass

Authors

  • Kara Pittman

Contributors

  • Victoria Ackroyd
  • Michael Flessner
  • Claudio Rubione
  • Mark VanGessel

Reviewed by

  • Erin Haramoto
  • Erin Burns

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

Italian Ryegrass
Johnsongrass
Redroot Pigweed
Amaranthus retroflexus
Smooth Pigweed