Steve Li, Alabama Extension
In this study at Headland, Select Max alone at 12 oz/A with crop oil and AMS only provided around 50% ryegrass control. Therefore, do not expect clethodim to eliminate large ryegrass by itself. Gramoxone and sequential applications will be needed. See the plot images below for effective programs to control ryegrass without Roundup.
The herbicide-resistant ryegrass problem is particularly growing in no-till and strip-till fields. This article provides options for burndown.
Glyphosate-resistant ryegrass is gaining traction in Alabama fields, says Steve Li, weed specialist with Alabama Cooperative Extension.
The herbicide-resistant ryegrass problem is particularly growing in no-till and strip-till fields. In the April 13 Alabama Extension Cotton Shorts Newsletter, Li provided some guidance on managing resistant ryegrass for 2021 along with some telling pictures of a study he is conducting to address the issue.

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