ProForce Cortex Duo Herbicide 10L

Cortex Duo is a non-selective knockdown and residual herbicide featuring innovative Dual Control Herbicide Technology for broad-spectrum weed management. Combining two modes of action, Cortex Duo delivers rapid knockdown of seedling and young grass and broadleaf weeds, suppression of established and perennial species, and residual control for up to 3 months.

Cortex Duo Herbicide is registered for use across a wide range of settings, Cortex Duo is highly versatile and effective in:

• Paths, driveways, roadsides, sheds, and gardens
• Amenity horticulture areas and protected cropping situations
• Nursery stock, orchards, vineyards, fallow soils, and forestry
• Control of moss and algae in gardens, rockeries, tiled roofs, walls, and around buildings

This makes Cortex Duo an ideal solution for commercial growers, landscapers, councils, turf managers, and property maintenance professionals seeking reliable, long-lasting control.

Key Features & Benefits of Cortex Duo Herbicide

• Dual Control Technology: Nonanoic Acid + Oxyfluorfen for multiple modes of action, reducing resistance risk
• Non-glyphosate option is effective knockdown alternative to glyphosate
• Fast-acting results provide visible effects within hours of application
• Residual control provides up to 3 months suppression of weeds
• Safe for use around established trees and ornamentals (avoid spray drift)
• Low chemical scheduling (S5) for added peace of mind
• Effective on moss and algae as well as weeds

How Does Cortex Duo Herbicide Work?

• Nonanoic Acid (525 g/L): a naturally occurring fatty acid that disrupts the waxy cuticle, causing rapid desiccation and plant death.
• Oxyfluorfen (15 g/L): a PPO inhibitor that disrupts chlorophyll pathways, leading to fast breakdown of cell membranes under light.

Together, these actives provide immediate knockdown and extended residual control, making Cortex Duo a unique and powerful tool in vegetation management.

How to Maximise the Performance of Cortex Duo Herbicide

• Spray to completely cover weed surface.
• Perennial weed species may require repeated applications to obtain long-term control. Repeat spray after 14 days if required.
• Avoid application if weeds are wet.
• Avoid application if rainfall is expected before spray deposits dry on plant surfaces.
• Don’t irrigate or water treated area for 24 hours to achieve maximum results. Don’t irrigate to the point of run-off from soil for at least 3 days after application.
• Avoid application if heavy rains or storms that are likely to cause runoff from soil are forecast within 3 days of application.
• Avoid spray contacting or drifting onto desirable plants.
• If applying via boom sprayer, the following requirements need to be met:
  • Spray droplets should not be smaller than a COARSE spray droplet size.
  • A buffer zone of 10m is applied for boom height above the target canopy of 1m or lower (but not 0.5m or lower).
  • To control weeds in Protected cropping situations apply on each side of the crop row taking care not to allow spray to contact any of the crop foliage.
• Mixing: Half fill spray tank and commence agitation. Slowly add required amount of Cortex Duo. Top up with required quantity of water. Agitate well before commencing spray procedure. Do not mix more than is needed