Weed Control
Q.

Type or brandname of chemical to kill Barnyard grass

Zone Maitland. NSW Australia | Anonymous added on April 28, 2018 | Answered

Could you please tell me What are the brand names of the Pre and Post emergent herbicides to kill Barnyard grass. I have been to Bunnings and the staff didn't know what Barnyard grass was so couldn't help me, I have read the labels on a number of chemicals and it doesn't mention Barnyard Grass. regards Julie

A.
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Downtoearthdigs
Certified GKH Gardening Expert
Answered on April 28, 2018

For the pre-emergent application, look for products called "crabgrass preventer", since those will kill barnyard grass seeds also.
https://ask.extension.org/questions/177418

This article lists some of the specific active ingredients used, but their availability varies by state, and some of them must be applied by a licensed applicator:
http://www.turffiles.ncsu.edu/weeds/barnyardgrass

This article provides good advice on the timing of application and other considerations:
http://plantscience.psu.edu/research/centers/turf/extension/factsheets/annual-weeds

Preventing seed production is also very important:
https://weedecology.css.cornell.edu/weed/weed.php?id=11

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