Nufarm Weedmaster DSTPlant Protection Product ComparisonPlant Protection Product ComparisonReport inaccuraciesReport inaccuracies

GENERAL INSTRUCTIONS

Nufarm weedmaster DST is a non-volatile, non-selective, water-soluble liquid herbicide with non-selective herbicidal activity. It is absorbed by plant foliage and green stems and moves through the plant from the point of contact into the root system. Effects may not be apparent for 3–7 days (annual weeds) or 2–3 weeks (perennial weeds) or longer under cool, cloudy conditions.

Nufarm weedmaster DST will control emerged weeds only and provides no residual weed control. Apply treatments to weeds which have at least one true leaf (broadleaf weeds) or two leaves (grasses) to provide an adequate surface area for herbicide uptake. Nufarm weedmaster DST may be used prior to sowing any crop (edible or non-edible) but not prior to transplanting tomato seedlings.

A withholding period for grazing stock is not required in most situations (except as listed in the withholding periods section). However, it is recommended that grazing of treated plants be delayed for one day after treatment of annual weeds, or 7 days if perennial weeds are present, to ensure absorption of Nufarm weedmaster DST. Certain plants (e.g., Soursob, variegated thistle) may be naturally toxic to stock. Where known toxic plants are present, DO NOT allow stock to graze until complete browning of treated plants has occurred.

Weeds should be actively growing at the time of treatment. DO NOT treat weeds under poor growing or dormant conditions (such as occur in drought, waterlogging, disease, insect damage, or following frosts) as reduced weed control may result. Reduced results may also occur when treating weeds heavily covered with dust or silt. Prior herbicide application may also induce stress in weeds.

Rainfall occurring up to 6 hours after application may reduce effectiveness. Rainfastness or general efficacy may be reduced if weeds are not actively growing, are under stress, or conditions of low light intensity/darkness. Heavy rainfall within 2 hours after application may wash the chemical off the foliage, and a repeat treatment may be required. Delay treatment of plants wet with dew or rain, if water droplets run off when plants are disturbed. Avoid contact with foliage, green stems, or fruit of crops, desirable plants, and trees, since severe injury or destruction may result.

Crop Establishment

Nufarm weedmaster DST is recommended for control of emerged weeds prior to crop establishment. Suitable cultivation and/or sowing operations are required to provide seed bed conditions satisfactory for crop germination and development. Spraying early to control young weeds will favor preparation of suitable seed beds. On friable soils and where there is only light cover of young weeds, sowing may proceed satisfactorily from one day after spraying. In situations of heavy weed growth, sowing should be delayed until weed decay and soil conditions allow the formation of a satisfactory seed bed. Incorporation of green or decaying vegetation and roots into the seedbed by cultivation or sowing may cause retarded crop emergence, particularly in cold and/or wet conditions. Vegetation may be reduced by grazing, and weed decay may be assisted by cultivation to leave trash on the surface. In marginal seedbed conditions, take care to achieve the correct seeding depth, and avoid the use of pre-emergence herbicides where label directions advise of the risk of retarded crop emergence.

Full soil disturbance seeding

When cultivating or sowing with a tyned implement, the operation may start one day after applying Nufarm weedmaster DST to annual species and 7 days for perennial species and should be completed within 21 days. Cultivation or sowing may start 6 hours after treatment when treating light infestations or pre-tillering annual grasses or annual broadleaved weeds less than 8cm diameter/height.

Minimal or no soil disturbance seeding

Trash may be removed by grazing after applying Nufarm weedmaster DST. Grazing may commence one day after treatment of small annual weeds, three days for large annual weeds, and 7 days for perennial weeds, and should be completed within 21 days.

Aerial (or surface) seeding

Delay seeding until trash is completely removed by grazing and/or plant decay. When establishing pasture, ensure application of fertilizer and insecticides and follow-up management is undertaken as required.

Mixing

Nufarm weedmaster DST mixes readily with water. Note: Reduced results may occur if water containing soil is used, e.g., water from ponds and unlined ditches, or if hard water containing calcium salts is used. DO NOT mix, store, or apply this product or spray solutions of this product in galvanized steel or unlined steel containers or spray tanks, since a highly flammable gas mixture may be formed. Use stainless steel, aluminum, brass, copper, fiberglass, plastic, or plastic-lined containers or spray tanks. Ensure the sprayer is free of any residue of previous spray materials. Use spray solutions promptly since a gradual loss of activity will occur. Fill the spray tank with one-half the required amount of clean water and add the proper amount of Nufarm weedmaster DST. Mix well before adding the remaining portion of water. Where required, add surfactant near the end of the filling process to minimize foaming. Placing the filling hose below the surface of the spray solution will prevent excessive foaming. Removing the hose from the tank immediately after filling will prevent back siphoning into the water source. DO NOT use mechanical agitators as these may cause excessive foaming. Spray tanks, pumps, lines, and nozzles should be thoroughly rinsed with clean water following application to prevent corrosion.

Tank mixtures/compatibility

Nufarm weedmaster DST may be tank-mixed with the following herbicides, insecticides, and additives. Read and follow all label directions, restraints, plant-back periods, withholding periods, regional use restrictions, and safety directions for the tank mix products.

Mixing instructions for all tank mixtures:

1. Fill the spray tank 1/3 to 1/2 full with clean water and start agitation.
2. Add Nufarm Liase where required.
3. Add recommended herbicide/insecticide/additive to the spray tank and mix thoroughly.
4. Add Nufarm weedmaster DST and the remaining water. Mix thoroughly.
5. Add surfactant, if required, near the end of the filling process to minimize foaming.
6. Always maintain adequate agitation during application and use the tank mix promptly.