Steps To Help Prevent Weed Resistance Implementing a successful weed resistance management program will help ensure the continued efficacy of the Enlist ® weed control system. These steps are important to the ongoing success of your program. 1. Use A Herbicide Program Approach — With Multiple Sites Of Action • Start with a clean field, using either a burndown herbicide application or tillage. Use a broad-spectrum soil residual herbicide with different sites of action, followed by a timely postemergence application that contains multiple sites of action, including an Enlist ® herbicide and a product with extended residual activity. • If resistance is suspected, treat weed escapes with a herbicide that has a site of action other than Group 4 or 9 (if Enlist Duo ® herbicide was used) or Group 4 (if Enlist One ® herbicide was used) and/or use nonchemical methods to remove escapes, as practical, with the goal of preventing seed, root or tuber production. • Utilize sequential applications of herbicides with alternative sites of action. • Rotate the use of an Enlist herbicide with non- Group 4 herbicides (when using Enlist One herbicide) and non-Group 9 herbicides (when using Enlist Duo herbicide). • Never use Enlist One herbicide alone. Always plan a program approach with Enlist One plus additional qualified tank-mix partners containing non- Group 4 herbicides or sequential postemergence applications of non-Group 4 herbicides. • Avoid using more than two applications of an Enlist herbicide and any other Group 4 or Group 9 herbicide (when using Enlist Duo herbicide) or Group 4 (when using Enlist One herbicide) within a single growing season unless in conjunction with another site of action herbicide with an overlapping spectrum.
2. Make Timely Applications Of Herbicides • Apply full labeled rates of an Enlist herbicide to actively growing weeds once the majority reach 3 to 6 inches in height. 3. Scout Weeds Before And After Application • Scout fields before application to ensure herbicides and use rates will be appropriate for the weed spectrum and weed size present. • Scout fields after application to detect weed escapes or shifts in weed spectrum. • Early detection of possible resistant species can limit the spread of these weed populations and allow for the implementation of alternate weed management practices. 4. See The Big Picture, Beyond The Field And The Herbicide • Incorporate nonchemical weed control practices, such as mechanical cultivation, crop rotation, cover crops and weed-free crop seeds, as part of an integrated weed control program. • Manage weeds in and around fields, during and after harvest, to reduce weed seed production. • Thoroughly clean plant residues from equipment before leaving fields suspected to contain resistant weeds. 5. Agronomic And Cultural Practices • Rotate crops and cultural practices to allow for a wider range of weed control practices. • Use only commercial, weed-free crop seed.
Year 1
Year 2
Report any incidence of nonperformance of an Enlist ® herbicide against a particular weed species to a representative or 855-ENLIST1 (855-365-4781) .
Year 3
Resistant Weed
Susceptible Weed
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