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Xtendflex Cotton and Bollgard 3 logo

XtendFlex® cotton

XtendFlex® cotton is the first cotton trait developed to be tolerant to over-the-top applications of registered glyphosate, dicamba and glufosinate-ammonium herbicides, providing flexbility to manage a wider-spectrum of difficult-to-control and resistant weeds in-crop.
Bollgard® 3 XtendFlex cotton provides an enhanced combination of defence against Helicoverpa species and tolerance to over-the-top herbicide application.
Click here to find out more about Bollgard 3 insect control technology.

  • At a glance

  • Resources

  • Applicator Training Videos

  • Applicator Training & Events

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Product Type
Biotechnology Traits
XtendFlex® cotton

Record-keeping requirements

As a condition of the XtendiMax 2 Herbicide with VapourGrip Technology registration, Bayer is required to collect the following application information from users of XtendiMax 2 Herbicide with VapourGrip Technology in XtendFlex cotton:

  • Date of application.
  • Farm address where spray application occurred.
  • Rate of application.
  • Total amount of product applied.
  • Air temperature at the start and end of application.

Xtendflex Cotton Survey

XtendFlex Cotton Product Guide

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  • Product Guide

XtendFlex Cotton Product Guide

XtendFlex Cotton Weed Resistance Management Plan

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  • Technical Guide

XtendFlex Cotton Weed Resistance Management Plan

Video Thumbnail Video Thumbnail

Off target movement of pesticide

Craig Day (Spray Safe and Save) and Matt Hayes (Bayer) talk about: different types of off target movement, surface temperature inversions and sensitivity of different crops to 2,4-D and dicamba. 
Craig Day (Spray Safe and Save) talks about: the importance of a clean sprayer, how to decontaminate your spray rig and the correct mixing order for herbicides.
Craig Day (Spray Safe and Save) and Donny Benn (Bayer) talk about: specific application requirements (e.g. wind speed), Delta T, surface temperature inversions and the XtendFlex cotton Spray App.
Craig Day (Spray Safe and Save) talks about: different nozzles types and how to select the correct nozzle.
Craig Day (Spray Safe and Save) talks about how a spray plan allows for the development of a management strategy for the safe and responsible application of herbicides.
Craig Day (Spray Safe and Save) talks about: the importance of water quality and its impact on the efficacy of herbicides.

Upcoming XtendFlex Cotton Field Days

This page will be regularly updated with details on field days showcasing XtendFlex cotton. 

You can also contact your local Bayer TBM to discuss other opportunities to see XtendFlex cotton in the field. 

Upcoming XtendFlex Cotton Spray Applicator Training Sessions

As part of Bayer's commitment to whole of system stewardship, the spray applicator training will be a requirement for:

- Technology User Agreement (TUA) signers;
- All on-farm staff responsible for spray applications (including mixing/handling); and
- Any spray contractor that applies XtendFlex Cotton System products over-the-top (OTT) of XtendFlex cotton varieties, once approved by the APVMA.

Each training session covers theory and practical topics.

Don't see a preferred training session listed below? Contact your local Bayer TBM to arrange a spray applicator training session.

Click here to register.


Date Location Venue details TBC State
25-Jul-24 Coleambally Colleambally Community Club NSW
12-Aug-24 Emerald Maraboon Tavern QLD
27-Aug-24 Griffith Griffith Leagues Club Southside NSW
28-Aug-24 Coleambally Colleambally Community Club NSW
3-Sep-24 Walgett Walgett Sporto NSW
4-Sep-24 Wee Waa House on Rose NSW
5-Sep-24 Moree Moree Services Club NSW
6-Sep-24 Goondiwindi O'Shea's Royal Hotel QLD

XtendFlex spray applicator training series 2024

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Biffo® - Please visit the Nufarm Australia website for full product information

* XtendiMax®, VapourGrip®, Roundup Ready® and Roundup® are trademarks of the Bayer Group. Biffo® is a registered trademark of Nufarm Australia Limited.

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