Mode of action
The combined herbicide containing two active ingredients (florasulam and 2,4-D), each having a specific mechanism of action. Florasulam inhibits acetolactate synthase, which is the key enzyme in biosynthesis of branched amino acids, such as leucine, isoleucine and valine.
2,4-D is an auxin type phenoxy-compound simulating the action of auxin - natural growth hormone - and inhibiting growth of weed cells.
It affects weeds only that already emerged before treatment.
Protective period
Virtually throughout the vegetation period (depending on weather conditions and until the next wave of weeds).
Speed of action
Weeds on plantings treated with PRIMADONNA SUPER, CSC stop growing in a day after treatment. First signs of exposure become visible as early as in 3 or 4 days. Depending on weed kind and weather conditions, total extinction of weeds takes place in 2 or 3 weeks after treatment.
The duration of herbicidal effect depends on preparation dose, weather conditions, species sensitivity and weed age. The best result is achieved when treating 5-10 cm annual bilobate weeds and perennial weeds at rosette stage.
The best result of treatment is achieved at 8⁰C to 25⁰C.
Range of inhibited weeds
Chamomile (species), satin flower (species), field sow thistle, rough sow thistle, Canadian thistle, yellow thistle, charlock, common caseweed, dish mustard, wild radish. pigweed, amaranth (species), copper rose, pepper plant (species), knotweed, speedwell (species), ragweed, bankweed, tansy mustard, common fumitory, yellow cress, Tartarian lettuce, common dandelion, day-nettle (species), catch weed.
Compatibility with other pesticides
The herbicide may be used in mixes with sulfonylurea, dicamba, carfentrazone-ethyl, and isoproturon preparations, as well as with fungicides, and insecticides.
