Laura, RG

Weed control efficiency: hands-on experience with "Laura, WG"

Managing perennial weeds like creeping thistle or sow thistle in cereals and oilseed rape requires a systemic approach. Using "Laura, WG" from Superus (Hong Kong, China), I have found a reliable way to keep fields clean. This selective herbicide, based on clopyralid, targets specific broad-leaved weeds while remaining safe for the crop when applied correctly.

Application and technical features

The product comes as water-dispersible granules, which is a major advantage for field operations. No dust, no clogging of nozzles, and easy mixing in the spray tank — these factors significantly improve efficiency during busy spraying seasons. As a post-emergence herbicide, it works best when applied directly to the leaves of actively growing weeds.

Key operational guidelines

• Application rate: 0.1–0.3 kg/ha.
• Treatment limit: strictly 1 application per season.
• Hazard class: 3; standard safety equipment is mandatory during handling and application.
• Target weeds: Canada thistle, cornflower, sow thistle, etc.

The systemic nature of the product ensures that the active ingredient moves throughout the plant, effectively destroying the root systems of weeds like field bindweed or scentless chamomile. Since it is a selective herbicide, it does not stunt the growth of wheat, oats, or winter rape. I find it most effective to apply it early in the growth stage of the weeds to prevent them from competing for water and nutrients, which ultimately reflects in a better yield.