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.

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

Resources:

Take action on Weeds : www.iwilltakeaction.com/weed/barnyardgrass

Identification, Biology, and Control of Barnyardgrass in Arkansas Rice – University of Arkansas

Barnyardgrass Management in Soybean and Rice, in the Mississippi Delta – University of Mississippi

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.