Roundup Metro

Manufacturer
Monsanto
Category
Herbicides
Registered until
Registration expired
Registration number
14842
Active materials
Links
A foliar applied translocated herbicide for the control of annual and perennial grass and broad-leaved weeds before sowing or planting all crops.
For use pre-emergence and pre-harvest in cereals and certain other crops and for destruction of grassland. For the control of emerged weeds in set-aside, stubbles and orchards.
Degraded by micro-organisms/microbes in the soil.
 
IMPORTANT: This information is approved as part of the Product Label. All instructions within this section must be read carefully in order to obtain safe and successful use of this product.
 
Warnings
Extreme care should be taken to avoid spray drift as this can severely damage neighbouring crops or plants.
Do not mix, store or apply Roundup Metro in galvanised or unlined steel containers or spray tanks.
Do not leave spray mixtures in the tank for long periods and make sure tanks
are well vented.
 
Restrictions
A period without rain of at least 6 hours, and preferably 24 hours, must follow application of Roundup Metro herbicide.
Do not spray on weeds where growth is impaired by natural senescence, drought, high temperature, a covering of dust, flooding or severe/prolonged frost at, or immediately after application, otherwise poor control may result.
Do not spray in windy conditions as drift onto desired plants or crops or vegetation can severely damage or destroy them.
 
Weeds controlled
Roundup Metro herbicide controls most emerged grasses and broad-leaved weeds. It is important that all weeds are at the correct growth stage when treated, otherwise some re-growth may occur and this will need re-treatment. Apply Roundup Metro herbicide once grasses and broad-leaved weeds have emerged and they have ACTIVELY GROWING green leaves
PERENNIAL GRASSES must have full emergence of healthy, green leaf. (Common Couch, for example, becomes susceptible at the onset of tillering and new rhizome growth, which usually occurs when plants have 4-5 leaves, each with 10-15 cm of new growth).
PERENNIAL BROAD-LEAVED WEEDS are most susceptible around the flowering stage.
ANNUAL GRASSES AND BROAD-LEAVED WEEDS should have at least 5 cm of leaf, or 2 expanded true leaves, respectively. In set-aside, annual grasses are best treated at full ear emergence, or before stem elongation. Application during stem extension phase of annual grasses e.g. Black-grass and Brome species on set-aside between the end of April and end of May, may result in poor control and require re-treatment.
BRACKEN should be treated after frond tips are unfurled, but presenescence.
OTHER SPECIES - recommendations for specific Areas of Use are given in the Recommendation Tables.
This product will not give an acceptable level of control of Horsetails (Equisetum arvense) – repeat treatment will be necessary.
 
Following crops
Upon soil adsorption the herbicidal properties of Roundup Metro are lost permitting the drilling of crops 48 hours after application.
 
Other Specific Restrictions:
When applying through conventional rotary atomisers, the spray droplet spectra produced must be of a minimum Volume Median Diameter (VMD) of 200 microns. Weed wipers may be used in any recommended crop where the wiper or chemical does not touch the growing crop. For weed wiper applications, the maximum concentrations must not exceed the following: (a) weed wiper mini - 1:2 dilution with water (b) other wipers - 1:1 dilution with water
 
Mixing and spraying
Roundup Metro mixes readily with water and can be applied in spray volumes ranging from 80-400 l/ha using tractor mounted, knapsack, rotary atomisers and hand-held sprayers. Specialised application equipment such as weed wipers and spot gun applicators may be used where indicated.
 
Correctly calibrate all sprayers under field or use conditions prior to application.
a) Tractor mounted and powered sprayers
These should be capable of applying accurately 80-400 l/ha within a pressure range of 1.5-2.5 bars (20-35 psi). Half fill the spray tank with clean water, start gentle agitation, and then add the correct amount of Roundup Metro. Top up the tank with water to the required level. To avoid foaming do not use top tank agitation. Use of a defoamer may be necessary. Medium Volume application (150-300 l/ha) Avoid high water volumes (>300 l/ha) which may lead to run-off from the treated vegetation, resulting in reduced control. Low drift nozzles such as air induction and preorifice types producing a medium or coarse spray (BCPC definition) should be used to minimise the risk of drift. Low Volume Application (minimum 80 l/ha) Low volume application can be achieved by reducing pressure and appropriate nozzle selection. Low drift nozzles which produce a medium spray quality (BCPC definition) should be used to minimise the risk of drift.
b) Knapsack sprayers
Recommended delivery range is 80 - 300 l/ha. Half fill the spray tank with clean water, add the correct amount of Roundup Metro and top up with water. Fill according to best practice as given on the CPA’s Voluntary Initiative website (www.voluntaryinitiative.org.uk) When used at a walking speed of 1 m/sec to apply a swath of 1 metre width, most knapsack sprayers fitted with a Lurmark AN 2.0 or similar nozzle deliver approximately 200 l/ha spray volume (or 10 litres per 500 m2). To apply 4.0 l/ha of Roundup Metro, therefore, use a 2% solution, i.e. 200ml Roundup Metro made up to 10 litres. Similarly, knapsack sprayers fitted with low volume nozzles such as Lurmark AN 1.0 typically deliver approximately 100 l/ha spray volume. To apply 4.0 l/ha Roundup Metro in this case use 4% solution.
c) Rotary Atomisers
Hand-held machines e.g. Herbi and Herbaflex or tractor mounted rotary atomisers can be used to apply a spray volume of 10-40 l/ha, When rotary atomisers are used to apply Roundup Metroensure that the droplet diameter falls within the range 200-300 microns for all uses. Stir the correct amount of Roundup Metro to control the particular target species into the sprayer bottle half filled with clean water. Top up with water, close the top and shake gently to ensure good mixing
d) Weed Wipers
For ropewick applicators use a concentration of 1 part Roundup Metro to 2 parts of water and add a water-soluble dye if required. Care should be taken to avoid dripping onto wanted vegetation. For new generation weed wipers, use 1part Roundup Metro to 10 or 20 parts of water or as directed by manufacturer’s instructions. A list of machines is included in the Company Advisory section at the end of this label.
e) Spot Gun Applicators
Spot gun applicators are for the treatment of individual weeds. Apply 5 ml of spray to target weed, using a narrow cone TG-3 or TG-5 nozzle.
 
Compatibility
Roundup Metro may be tank-mixed with an authorised adjuvant eg Frigate Adj 0325– only for specific areas of use as directed by Monsanto. Use 0.5 litres of Frigate per 100 litres of spray solution. Do not tank mix Roundup Metro with adjuvants, pesticides or fertilisers except as advised by Monsanto. For up to date information on compatible products contact Monsanto UK Ltd (tel: 01954 717575) Do not tank-mix Roundup Metro when using rotary atomiser sprayers. For hydraulic sprayers: maintain continuous agitation when using Roundup Metro in tank mixture. For knapsack sprayers: mix thoroughly and use immediately when using Roundup Metro in tank mixture.
 
General information
Roundup Metro herbicide is an advanced formulation containing the potassium salt of glyphosate. Roundup Metro is taken up by foliage and translocated to underground roots, rhizomes and stolons, providing control of both annual and perennial grasses and broad-leaved weeds. Roundup Metro is rapidly adsorbed onto particulate matter in soils and water and is quickly degraded by the micro-organisms present in soil and aquatic bottom sediments. Until degraded, the active ingredient in Roundup Metro, glyphosate, is practically immobile in soils and is, therefore, unlikely to contaminate groundwater.
 
Symptoms on weeds
Symptoms of treatment are generally first seen 7-10 days, or longer (if growth is slow), after spraying. These take the form of leaf reddening followed by yellowing and are usually quicker to appear on grasses than on broad-leaved weeds. Reaction of nettles is slow.
 
Effects of weather
See Directions for Use (Restrictions). Roundup Metro will remain efficacious at low but not freezing temperatures however the onset of symptoms will be delayed. A covering of dew may reduce efficacy where run-off occurs. Reduced control is likely where weed growth is impaired by natural senescence, drought, high temperature, a covering of dust, flooding or severe/prolonged frost at, or immediately after application.
 
Weed resistance strategy
There is low risk for the development of weed resistance to Roundup Metro. There are no known cases of weed resistance to glyphosate in UK. Strains of some annual weeds (e.g. Black-grass, Wild oats and Italian Ryegrass) have developed resistance to herbicides which may lead to poor control. A strategy for preventing and managing such resistant grass-weeds should be adopted. Guidelines have been produced by the Weed Resistance Action Group. Copies are available from the HGCA, CPA, your distributor, crop adviser or product manufacturer (Monsanto).
 
Growers are encouraged to implement a weed resistance strategy based on (a) Good Agricultural Practices and (b) Good Plant Protection Practices by:
Following label recommendations
The adoption of complimentary weed control practices
Minimising the risk of spreading weed infestations
The implementation of good spraying practice to maintain effective weed control
Using the correct nozzles to maximise coverage
Application only under appropriate weather conditions
Monitoring performance and reporting any unexpected results to Monsanto UK Ltd (Tel: 01954 717575)
 
Agronomic Advice
Applied pre-harvest of specified crops, Roundup Metro provides, in addition to weed control, a diverse range of harvest management benefits accruing from uniform ripening of the crop. It is recommended for cleaning up weedy ground prior to planting or sowing. Applications of lime, fertiliser, farmyard manure and pesticides should be delayed until 5 days after application of Roundup Metro.
Registered for culturesRate
Glyphosate who kills all plants1.5 - 6 l