Butilan Star c.s.

Ensuring a Clean Start for Winter Oilseed Rape

Securing the yield potential of winter oilseed rape begins long before the crop is fully established. Weed competition during the early stages of growth can significantly stunt development, robbing the crop of essential nutrients and moisture. Butisan Star SC, developed by BASF SE, Germany, is a reliable soil-applied herbicide specifically engineered to eliminate this competition before the crop even emerges.

Technical Efficacy and Mechanism

Butisan Star is a selective, systemic herbicide that acts through the soil. Its power lies in the synergistic combination of quinmerac and metazachlor. This formulation is highly effective at inhibiting the germination of both annual grasses and broad-leaved weeds. By applying this product, farmers establish an invisible protective barrier in the topsoil layer.

Practical Field Application

The product is intended for pre-emergence application, meaning it should be applied immediately after sowing. This timing is crucial for maximizing crop safety and weed control efficacy.

• Targeted weed spectrum: highly effective against common problematic weeds such as white goosefoot, shepherd's purse, common chickweed, cleavers, scentless mayweed, purple dead-nettle, and field pansy.
• Operational efficiency: supplied as a suspension concentrate (SC), it is easy to mix and apply.
• Optimized dosage: a recommended rate of 2–2.5 L/ha ensures a robust performance in a single treatment, saving time and resources.

For best results, soil moisture and seedbed preparation are key. The field should be evenly prepared, with fine soil structure, allowing the herbicide to form a uniform film. When used correctly, Butisan Star SC allows the rape crop to emerge into a competitive-free environment. This reduction in weed pressure is a staple of intensive cultivation, helping to minimize the need for post-emergence interventions and ensuring that the crop's genetic potential is preserved from the very first day. It remains a foundational tool for professional agricultural management in winter oilseed rape production.