Frequency Herbicide

Frequency® Herbicide adds new dimension to selective weed control as it's the first post-emergent Group H herbicide that isn't locked into partner chemistry. You can fine-tune the chemistry and rate of the tank-mix partner to find your perfect Frequency and maximise control of tough weeds.

• Versatile  and flexible new Group H chemistry
• Excellent control of hard-to-kill broadleaf weeds
• Bonus reduction of wild oats seed-set where Avena sterilis is dominant
• Favourable plantbacks compared to other Group H products for optimal crop rotation flexibility

Efficacy 

Frequency is a contact herbicide which provides excellent control of a wide range of  broadleaf weeds, including hard to kill weeds such as fleabane.

Target weeds will show symptoms in 3–7 days and will usually die in 18–28 days.

BASF recommends applying Frequency with a tank-mix partner such as bromoxynil or MCPA, which can be ‘dialled up’ in the mix according to the size and spectrum of the target weeds.

Choosing tank-mix partners from different MOA groups can also help overcome resistance issues 

Mode of action

Frequency’s active ingredient, topramezone, has a Group H mode of action – it is an HPPD inhibitor (a “bleacher”).

Compatibility

Frequency is physically compatible with Ally*, Associate*, Agritone* 750 and LVE, Axial*, Bromicide* 200, bromoxynil, Flight* EC, MCPA (LVE), metsulfuron, Jaguar*, Paragon* Xtra, Sencor* 480 SC, Tigrex* and Topik* 240 EC.

Frequency is also physically compatible with Easy N* liquid fertiliser, but application of that mix may result in increased crop effect.

Trials have shown mixtures with picolinofen or diflufenican can cause foliar burn without affecting crop yield. 

Plantbacks

Frequency has very favourable minimum plantback periods. 

Check the label of any product mixed with Frequency® Herbicide to determine any plant back periods or restrictions on use.

6 weeks: wheat, barley, maize.

4 months: canola, cotton, chickpeas, faba beans, field peas, lentils, lupins, mungbeans, safflower, sorghum, sunflowers.

Suppression

Seed-set in wild oats in northern NSW and Queensland cropping zones where Avena sterilis is dominant in the targeted population

Application method

• Ground application only.

• Use an appropriate tank-mix partner at a rate suited to the weed spectrum & size.

• Add Hasten at 1%.

• Ensure good coverage with medium spray quality using 80–150 L/ha water.

• Do not apply to stressed crops.