Express 75 WG is a systemic herbicide from FMC, designed for controlling dicotyledonous weeds in sunflower and cereal crops. It is well-known for its high efficacy, especially in sunflower crops grown with herbicide-tolerant hybrids (Clearfield® and Clearfield® Plus).
Active Ingredient:
- Tribenuron-methyl (750 g/kg): This active ingredient belongs to the sulfonylurea class and works by inhibiting the synthesis of essential amino acids in weeds, stopping their growth and causing them to dry out.
Protected Crops:
- Sunflower (hybrids tolerant to tribenuron-methyl)
- Winter/Spring wheat and barley
Weed Control Spectrum:
Annual Dicots:
- Chamomile (Matricaria spp.)
- Pigweed (Amaranthus spp.)
- Cornflower (Centaurea cyanus)
Perennial Dicots:
- Thistle (Cirsium arvense)
- Bindweed (Convolvulus arvensis)
Mode of Action:
- Systemic Action: The product rapidly penetrates through the leaves and is translocated to the roots.
- It inhibits the ALS (acetolactate synthase) enzyme, which is essential for amino acid synthesis in weeds.
- Visible symptoms (yellowing, wilting) appear within 5-10 days, and complete drying occurs within 2-3 weeks.
Dosage and Application:
- Recommended Dosage:
- Sunflower: 25-30 g/ha
- Wheat/Barley: 15-25 g/ha
- Adjuvant: The use of an adjuvant (e.g., Dash HC) is recommended to improve effectiveness.
- Water Volume: 200-400 liters/ha
- Application Timing:
- Sunflower: In the 2-8 leaf stage of the crop.
- Cereal crops: Post-emergence, when the weeds are in the 2-4 leaf stage.
Advantages:
- Compatibility with Clearfield® and Clearfield® Plus hybrids.
- Wide spectrum of control on dicotyledonous weeds.
- Safety for target crops when the recommended doses are followed.
- Flexibility in application (post-emergence).
- Easy-to-use water-dispersible granules (WG) formulation.
Safety Recommendations:
- Avoid application under thermal stress, drought, or excessive moisture conditions.
- Prevent drift of the solution to sensitive crops.
- Wear protective equipment and follow safety regulations during handling and application.
Conclusion:
Express 75 WG is an essential herbicide for protecting sunflower and cereal crops, offering effective control of weeds and contributing to higher yields when applied according to the recommendations.
