Steadfast^™ IS

Name: Steadfast™ IS
Brand: Corteva Agriscience

Herbicide

Group

Steadfast IS herbicide is your go-to solution for control of grasses and volunteer canola in field corn. It comes in a low use rate extruded WG formulation for easy measuring and mixing. Steadfast IS comes with a built-in crop safener allowing for a wide window of application and use on low heat unit corn hybrids.

Steadfast^™ IS Herbicide Label

Steadfast^™ IS Herbicide SDS Steadfast^™ IS Tech Sheet

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Benefits

Proven control of annual grasses

Steadfast IS provides dependable control of key annual grasses such as green foxtail and wild oats.

Crop protection under a wide range of conditions

Includes a safener allowing for use on short season hybrids.

Wide window

Steadfast IS can be safely applied to field corn up to the 8 leaf stage (V6).

Crops

Below lists the crops that Steadfast IS herbicide can be used on.

Blueberry, Lowbush (Vaccinium augustifolium)

Corn, Field (Zea mays ssp. mays)

Weeds Controlled

Foxtail, Green
Canola, Volunteer
Oat, Wild
Wheat, Volunteer

Registered
Unregistered

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Technical Specifications

Active Ingredient

NICOSULFURON 6.75 g/ac

RIMSULFURON 3.4 g/ac
Rates
- 27 g/ac
Acres Treated: 20 ac/bottle

Water Volume: 10-20 US gal/ac
Application Timing

Crop Stage: Spike to 8 leaf (V6)

Weed Stage:

Annual grasses: 1-4 leaf (up to early tillering)

Volunteer canola: cotyledon to 5 leaf

Rainfast: 2 hours
Packaging

6 x 540 g bottles
Crop Rotation
- 4 months: winter wheat
- 10 months: spring wheat (including durum), oats, barley, canola, soybeans, dry beans, white beans, chickpeas, potatoes, sunflowers, corn (sweet or seed), field peas, lentils and flax
- Anytime: field corn
Tank Mixes

Non-GMO field corn: Steadfast IS can be tank-mixed with registered broadleaf herbicides to ensure cross-spectrum control of grass and broadleaf weeds

Glyphosate Tolerant Corn: Glyphosate
Additional Information
When using Steadfast IS herbicide in conventional corn, it must be tank mixed with a non-ionic surfactant at 2 L/1000 L (0.2% v/v).

Steadfast IS must be applied only when the temperature in the 24 hours before and after application ranges between 5°C and 30°C. Temperatures beyond this range increase the potential for crop response. Make only one application per growing season.

For maximum crop safety, Steadfast IS should only be applied to corn which has not been treated with a highly systemic organophosphorus soil insecticide, such as Lorsban™. Do not tank mix with any organophosphorus insecticide. Do not apply a foliar organophosphorus insecticide within 7 days before or after applying Steadfast IS.

Pre-Harvest Interval:
- The pre-harvest interval for Steadfast IS is 30 days for corn (silage, fodder or grain).
- The pre-harvest interval for Steadfast IS is 14 months for lowbush blueberries.