Rockstar 200 EC

Manufacturer
Imtrade
Category
Herbicides
Registered until
2024-06-29
Registration number
59003
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GENERAL INSTRUCTIONS: MIXING

ROCKSTAR 200 may be mixed with water or diesel. Mix only sufficient chemical for each day's use and avoid storing.

Mixing in Water: Half fill the spray tank with water and add the required quantity of ROCKSTAR 200 and complete filling. Agitate continuously to ensure thorough mixing before and during application.

Mixing in Diesel: Half fill the spray tank with diesel and add the required quantity of ROCKSTAR 200. Add the remainder of the diesel and agitate or shake to mix contents.

Tank mixtures: Wettable powder or dry flowable formulations (e.g., water-dispersible granules) should be added to the spray tank first, followed by suspension concentrates (Flowables), water-soluble salts, and then emulsifiable concentrate formulations (ROCKSTAR 200). Add spraying oils and surfactants (wetters) last.

OILS AND SURFACTANTS

Oils: Where specified use Uptake Spraying Oils at the rate of 500mL/100L of spray mix. When using less than 100L/ha spray volume, ensure a minimum of 250mL/ha of Uptake Spraying Oil is used, unless 1L/100L or 1L/ha is specified.

Surfactants (wetters): Imtrade Pro 700 Surfactant to be used at 300mL/100L.

Use a 1000g/L non-ionic surfactant at 100mL/100L of spray mix where required. Imtrade Subject 240 EC Selective Herbicide Always use Uptake Spraying oil with ROCKSTAR 200 + Imtrade Subject 240 EC Selective Herbicide tank-mixes at 500mL/100L of spray mix with a minimum of 250mL/ha.

DO NOT mix ROCKSTAR 200 with Imtrade Subject 240 EC Selective Herbicide if the grass weeds are not actively growing.

Always use the maximum label rate of Imtrade Subject 240 EC Selective Herbicide for the appropriate grass growth stage.

DO NOT use ROCKSTAR 200 at more than 0.75L/ha in tank mixes with Imtrade Subject 240 EC Selective Herbicide.

Imtrade Eradicator 450 Herbicide

When mixing ROCKSTAR 200 with one of these products to control both grass and broadleaf weeds, refer to that label for use rate and adjuvants recommended for grasses. DO NOT use Imtrade Eradicator 450 Herbicide when Barnyard Grass, Buttongrass, Crowsfoot Grass, Native Millet, and Liverseed Grass are target species.

APPLICATION METHODS and WATER RATES

BROADCAST APPLICATION IN CROPPING, PASTURE, AND FALLOW SITUATIONS.

A. Ground Application (Boom)

Apply ROCKSTAR 200 with an accurately calibrated boom sprayer, in at least 50L/ha water (100-400L/ha for sugar cane). Flat fan nozzles are recommended using pressures in the range 200-300kPa. Set the boom at a height to ensure a double overlap of the nozzle patterns.

B. Ground Direct Application (Dropper Nozzles)

To minimize crop effects, dropper nozzles should be used in sorghum when the crop is beyond the 8-leaf growth stage and in maize and sweet corn when the crop is beyond the 6 leaf growth stage. Adjust the nozzles to direct the spray into the base of the crop and away from the leaves and the growing point. See manufacturer's directions for setting up and calibration of dropper nozzles.

C. Aerial Application

Apply in a minimum volume of at least 35L/ha water (60L/ha in sugar cane) Use equipment calibrated to produce droplets with an average diameter (Volume Mean Diameter: VMD) of 250-350 microns.

DO NOT apply when the temperature is above 30°C, when there is no wind or when the wind is blowing toward susceptible crops.

DO NOT use human flaggers unless they are protected by engineering controls such as enclosed cabs.

WOODY WEED SITUATIONS

Weeds must be actively growing to attain optimal effect. Delay the treatment of regrowth following bulldozing, slashing, burning, plowing, or a previous chemical treatment until it has at least 1 meter of new, vigorous growth.

A. High Volume Application

Hand Gun

Apply the recommended mix to obtain full coverage of leaves and stems using a number 6-8 tip at 700 to 1500 kPa. To obtain good coverage, a spray volume of 1500 to 4000L/ha (15 to 40L/100m2) is required per infested hectare. Ensure thorough coverage to the point of runoff.

Knapsack

Knapsack sprayers may be used on smaller infestations where penetration and coverage of the canopy are easier to achieve. Use the same use rate and spray techniques as for handgun application.

B. Low Volume, High Concentrate Application

Drench Gun or Gas-Powered Gun

Apply the recommended mixture uniformly across the foliage by applying 50mL shots to cover 4 to 5m2 of surface area of the plant. This is approximately equivalent to 20 droplets per cm2 of the leaf surface. Use a marking agent as recommended by the equipment manufacturer to check spray coverage.

C. Basal Bark and Cut Stump Application

Basal Bark

DO NOT apply to wet stems as this can repel the diesel mixture. Spray or paint the recommended mixture around the base of each stem from ground level to a height of at least 30cm from the ground, wetting the bark to the point of runoff. Apply with a paintbrush or a pressure sprayer with an appropriate lance and solid cone nozzle. If using spray equipment use low pressures (≤200kPa) sufficient to form a cone of spray. Old rough bark will require more spray than smooth or young thin bark.

Cut Stump

Apply the recommended mixture liberally to the freshly cut stump immediately after cutting. Apply by spraying or painting the cut surface and sides of the stump. Best results are obtained when the stems are cut less than 15cm above the ground.

CLEANING SPRAY EQUIPMENT

Rinse water should be discharged onto a designated disposal area or, if this is unavailable, onto wasteland away from desirable plants and watercourses.

Cleaning equipment after using water-based sprays:

Rinsing: After using ROCKSTAR 200, empty the tank completely and drain the whole system. Thoroughly wash inside the spray unit using a pressure hose. Drain, and clean any filters in the tank, pump, lines, hoses, and nozzles. After cleaning the tank as above, quarter fill with clean water and circulate through the pump, lines, and nozzles. Drain and repeat the rinsing procedure twice.

Decontamination (before spraying cotton and other sensitive crops; see PROTECTION OF CROPS): Wash the tank and rinse the system as above. Then quarter fill the tank and add an alkali detergent such as Spraymate Tank and Equipment Cleaner at 500mL/100L or water and circulate throughout the system for at least 15 minutes. Drain the whole system. Remove filters and nozzles and clean them separately. Finally, flush the system with clean water and allow draining.

Cleaning equipment after using diesel-based sprays:

On completion of spraying, use a degreaser such as Caltex Kwik-D-Grease* to remove traces of diesel from the sprayer. Rinse tank and spray through nozzles with water to remove degrease. Then, quarter fill the tank with clean water and add an alkali detergent such as Spraymate Tank and Equipment Cleaner at 50mL/10L of water. Shake sprayer to circulate the washing solution throughout the sprayer, then spray the solution through the nozzles. Rinse well with clean water to remove the detergent. To clean brushes and containers, spray liberally with degreaser. Hose off with clean water and repeat using detergents as above.

Registered for cultures
Corn
Sorghum