Mechanism of action
Active ingredients inhibit photosynthesis, carbon dioxide digestion by plants, and phosphorylation process, thus causing disturbance of the energy balance and basic metabolic reactions. Phenmedipham and desmedipham penetrate through leaves and have a translaminar effect.
Oil emulsion concentrate improves significantly herbicide absorption. Particularly, oil serves as a conductor of the active ingredient through the wax layer of a leaf and facilitates preparation penetration in deeper layers of a weed. When applied on a weed, oil emulsion distributes evenly and forms a film on the leaf surface preventing preparation evaporation and washing-off. This helps maintain preparation activity that does not depend on weather conditions.
Protective period
The preparation affects weeds present in the plantings during spraying, and its action time depends on time before the next wave of weeds, which is function of weather conditions during application. If the second wave appears with a delay, the action time will amount to 3 or 4 weeks or more, i.e. beet plants will demonstrate normal growth at their earlier stages, when the crop is most sensible to weeds.
Speed of action
Visible signs of exposure appear in 4 to 8 days after treatment.
Range of inhibited weeds
Annual bilobate weeds, including pigweed (species).
Compatibility with other pesticides
To enhance the spectrum of action, use a preparation containing herbicides against cereals (Healer, Forward, etc.) and against sow thistle (Lornet).
