Kaptora®, RK, herbicide

Comprehensive weed and broomrape control in Clearfield sunflowers

Captora®, SL from BASF S.A. is a systemic, post-emergence herbicide engineered specifically for the Clearfield sunflower production system. It is the gold standard for growers dealing with severe weed infestations and parasitic broomrape, providing long-lasting control with a single application.

Practical application in the field

The product utilizes a dual-active ingredient blend (imazamox and imazapyr) that travels systemically throughout the target weeds, ensuring destruction from the foliage down to the root system. Its target list includes:

• Sunflower broomrape (all known races) — the primary reason for using this chemistry.
• Broadleaf weeds: Common lambsquarters, redroot pigweed, and common ragweed.
• Perennial weeds: Field bindweed, Canada thistle, and cleavers.

Key usage details

For optimal results, apply between 1.0 and 2.0 liters per hectare. The application should target the crop's 2–4 leaf stage, which is the window of maximum weed susceptibility. As a selective systemic herbicide, Captora® effectively shields the sunflower crop while eliminating competing vegetation.

Being a water-soluble concentrate, it provides excellent mixing characteristics and uniform application. Growers should account for its residual soil activity when planning subsequent crop rotation. This professional-grade herbicide remains a foundational asset for high-yield sunflower production in Brazil and globally, ensuring the crop reaches harvest without the stress of weed competition.