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rows of soybean crop


Group 2 & Group 14


Optill herbicide tank-mixed with glyphosate, provides rapid burndown plus early season residual control for cleaner fields in glyphosate-tolerant soybeans.

  • Powered by Kixor, for a fast, complete burndown.
  • Residual activity keeps fields weed-free during early crop development.
  • Multiple modes of action, to help prevent and manage resistant weeds.

Labels & SDS


Applicable On


Labels & SDS

Additional Resources



Benefits of Optill

  • The better weed control of Optill plus glyphosate has been shown to increase soybean yield by 2 to 3 bushels per acre, compared to using glyphosate alone.
  • Optill uses Group 14 and Group 2 active ingredients that complement glyphosate to provide a faster, more complete burndown than glyphosate alone.
  • The residual power in Optill is effective into early crop development allowing increased time and flexibility to apply a second, in-crop application of glyphosate.

Performance Trials

Weed control in soybeans with glyphosate versus Optill® plus glyphosate plus Merge®

Field Comparison: Untreated + Caramba

Comparative control – 30 days after treatment


Chart: Untreated + Caramba + Competitior

Keeping Field clean into the early season can increase yield

Chart: Untreated + Caramba + Competitior

Product Info & Application Guide

Weed Management

Tank-mixed with glyphosate, Optill complements control of all weeds on the glyphosate label in addition to the following weeds.


Weed Class

List of Weeds

Broadleaf Weeds

Broadleaf plantain
Canada fleabane6
Common chickweed
Common ragweed1,2
Giant ragweed3,6
Lady’s thumb3
Lamb’s quarters1,2
Perennial sow thistle3,8
Prickly lettuce7
Redroot pigweed1,2
Shepherd’s purse
Wild buckwheat3
Wild mustard3


Barnyard grass4
Crabgrass (large)4
Foxtail (green, yellow)1,4


1 Adequate residual control may not be achieved on Group 2-resistant biotypes.

2 Includes control of triazine-resistant biotypes.

3 Burndown only.

4 Burndown and residual suppression only.

5 Suppression only.

6 Includes control of glyphosate-resistant biotypes.

7 Top growth only.

8 Top growth burndown only.

Application Tips

  • Flat fan or similar spray nozzles should be used for application
  • Water Volume should be between 40 - 80 L/ac (100 - 200 L/ha)
  • Denser weed infestation requires the use of higher water volumes
  • Recommended pressure is 275 kPa
  • Rainfastness – 3 hours after application
  • Residual pre-plant applications of Optill must be activated by at least ½ inch of rainfall or sprinkler irrigation prior to weed seedling emergence

When to Apply




pre-plant surface application pre-emergence

How Much to Apply

One case will treat 120 acres. Optill is tank mixed with glyphosate for application at the following rates:




Application Rates

Early Pre-plant

Optill herbicide + glyphosate*

60 g/ac (147 g/ha)

Water volume

40 - 80 L/ac (100 - 200 L/ha)

Merge adjuvant**

0.40 L/ac (1 L/ha)


* See glyphosate label for application rates.

**Addition of Merge adjuvant (not included) is required for optimum activity.

Follow Crops

Following an application of Optill, the crops listed can be planted in the season indicated.


Same Season (in case of crop failure1)

Soybeans, Winter wheat2

Next Season

Barley (spring), Corn (field), Dry beans, 


Wheat (spring, winter)


1 A second application of Optill cannot be made in the rescue crop.
2 Winter wheat may be re-planted in cases of crop failure or as a rotational crop 100 days following an Optill application. Soil preparation for re-planting should be no deeper than 10 cm.