Asteroid

Manufacturer
FMC
Category
Herbicides
Registered until
N/A
Registration number
18958
Active materials
Links
For the control of most annual and perennial grasses and broad-leaved weeds.
 
GENERAL INFORMATION
Asteroid is a water-soluble, non-selective, non-residual herbicide for the control of most annual and perennial grasses and broad-leaved weeds. The product is absorbed by the foliage and translocated throughout the plant and root systems. Visible symptoms, such as gradual wilting and yellowing are usually obvious within 3 to 7 days of application to annual weeds, but not for 14 to 21 days on perennial weeds. Complete browning and root deterioration may require 20 to 30 days, this process will take longer in cooler weather.
Asteroid is inactivated on contact with the soil.
 
Restrictions
1. Weather Conditions
For best results a rain-free period of 6 hours and preferably 24 hours is required after application of this product. Treating weeds which are suffering from drought stress may result in reduced efficacy Extreme care should be taken to avoid spray drift as this can severely damage or destroy neighbouring crops and plants.
2. Associated Farming Practices
Lime, chemical or natural fertilisers or other pesticides should not be applied before treatment or to treated areas for at least 5 days before or after application of Asteroid.
3. Product Degradation and Following Crops
Asteroid is inactivated on contact with soil, by binding to soil particles. All crops may be planted or sown at specified intervals after treatment with Asteroid. A slight growth retardation following germination may be seen if seeds are sown by direct drilling amongst decaying treated vegetation, roots, rhizomes or stolons. The action of Asteroid will be slower in cooler weather. This product should not be used under frosty conditions while weed growth is reduced by natural senescence.
4. Mixing and Application
Half fill clean spray tank with clean water, add required quantity of product and mix well; add remaining water. DO NOT use mechanical agitators. Place the filling hose below water level to prevent excessive foaming and remove immediately after filling to prevent back-siphoning. When tank mixing with other products recommended on the label add the other product before adding Asteroid, then add the remaining water. DO NOT STORE, MIX OR APPLY THIS PRODUCT FROM AN UNLINED OR GALVANISED STEEL TANK. Do not leave mixtures in spray tanks over long periods. Ensure that spray tanks are thoroughly ventilated.
5. Timing treatments
It is important when treating perennial weeds that there is a full emergence of healthy green foliage and active growth at the time of application. The efficacy of this product is increased if the leaf surface for absorption is large. Common Couch is particularly susceptible at the 4-5 leaf stage, where there is about 10-15 cm of new growth, when tillering and new rhizome growth is starting. Most perennial broad-leaved weeds are particularly suscep tible to treatment when they are actively growing and shortly before flowering. Annual weeds should be growing actively at the time of treatment. Grasses should have at least 5 cm of growth. Broad-leaved weeds should have at least two sizeable true leaves. Under conditions of drought, flooding, frost or high tempe ratures, disease or insect damage or weeds heavily covered with dust, where plant growth is restricted the efficacy of this product will be reduced.
 
DIRECTIONS FOR USE
Asteroid may be applied to all areas which will be planted with food and feed crops, pre-harvest to wheat and oats intended for milling and barley intended for brewing.
CONSULT PROCESSOR BEFORE USING ON CROPS INTENDED FOR PROCESSING.
NEVER APPLY PRE-HARVEST TREATMENT TO CROPS GROWN FOR SEED.
Barley intended for brewing and contract grown crops should only be treated following prior approval from the grain merchant.
Strains of some annual grasses, e.g. Black-grass, Wild-oats and Italian Rye-grass, have developed resistance to herbi cides which may lead to poor control. A strategy for prevent ing and managing such resistance should be adopted. This should include integrating herbicides with a programme of cultural control measures. Guidelines have been produced by the Weed Resistance Action Group and copies are available from the HGCA, CPA, your distributor, crop advisor or product manufacturer.
Do not use glyphosate repeatedly in the same field over several years, as selection of resistant biotypes can take place and may become prevalent. No extra surfactant should be added if the product is to be applied using a rotary atomiser sprayer.
 
 
 
Registered for culturesRatePreharvest Interval
Glyphosate who kills all plants4 - 6 l14