New Zealand - English - Ministry for Primary Industries

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Active ingredient:
Available from:
Landmark Operations (NZ) Ltd
metsulfuron-methyl 625 g/kg
Authorization number:
Authorization date:


Keep out of reach of children



For the control of brushweeds including gorse, broom and blackberry. Also controls other woody

weeds and broadleaf weeds

ACTIVE INGREDIENT: Contains 600 g/kg metsulfuron-methyl in the form of a water dispersible granule

Registered to:

Relyon NZ Limited

C/o KPMG, The Terrace

Level 5, 79 Cashel Street

Christchurch 8001

Distributed by:

Farmlands Co-operative Society Limited

535 Wairakei Road, Burnside

Christchurch 8053

Tel 0800 200 600

Net Contents: 500 g, 1 kg, 2 kg, 5 kg, 10 kg, 20 kg, 25 kg,




6.3B, 6.4A, 9.1A, 9.2A

WARNING: Causes eye irritation and mild skin irritation.

ENVIRONMENT: Very toxic to aquatic life and to the soil environment. Take all reasonable steps to

ensure that the substance does not cause any significant adverse effects to the environment beyond the

application area. Do not apply directly into or onto water. Do not use the same equipment to apply other

chemicals to susceptible crops unless decontaminated completely.

This product must be under the control of qualified person during mixing, handling and applying.

PERSONAL PROTECTION: When mixing or applying, wear eye protection, waterproof gloves, boots

and cotton overalls. Avoid contact with skin, eyes and inhalation of spray mist. Wash hands and face

before meals and after work. Do not eat, drink or smoke while using.


Store in the original container, tightly closed and away from foodstuffs, seeds, fertilisers,

insecticides or fungicides used for the protection of crops.

SPILLS AND DISPOSAL: When dealing with spills wear personal protective clothing and equipment

as described in the PERSONAL PROTECTION section. Contain spillage. Collect in properly

labeled, sealed drums for safe disposal. Deal with all spillages immediately. If contamination of

drains, streams, watercourses, etc. is unavoidable, warn the local water authority.

PRODUCT DISPOSAL: If possible dispose of by using according to the label, otherwise dispose of

in an approved landfill or bury below 500mm in a disposal pit specifically marked and set up for this

purpose clear of waterways, desirable vegetation and tree roots.


Ensure container is completely empty. Burn empty container or bury in

suitable landfill.


For advice call a doctor or the National Poisons Centre ( 0800 764 766 ). Have product label or

container at hand. IF IN EYES: Rinse cautiously with water for serval minutes. Remove contact lenses,

if present and easy to do. Continue rinsing. If eye or skin irritation persists, get medical attention


Before opening, carefully read warning statement, precautions instructions, first aid instructions and

directions for use. Best results are obtained when weeds are not under stress.


Add the required quantity of Boomer to spray tank partly filled with water and maintain agitation while

filling and spraying.


Spray equipment must be completely decontaminated before use on sensitive crops. Drain equipment

completely then flush thoroughly with water. Refill with clean water, add 1 litre of 3% chlorine bleach, flush

thoroughly for 10 minutes and drain. Repeat the flush with bleach. Finally rinse with clean water. Nozzles

and filters should be cleaned separately.


Handgun: Use a minimum of 1000 litres/ha of spray. No.4 or No.6 spray tips should be used with a

pressure of 1000 – 2000 kPa.

Knapsack: For use only on small bushes where total coverage of stems and foliage will be achieved.

Aerial: This application method is recommended for non-agricultural areas. Standard booms; apply 2

overlapping passes of 100 – 150 litres/ha to give a minimum of 200 – 300 litres/ha. Foaming nozzle

system; apply 2 overlapping passes of 115 litres/ha to give a minimum of 230 litres/ha.

Carpet roller/wiper application: Graze pastures first to give maximum height difference between pasture

and target weeds. Use in the control of buttercup, ragwort, Scotch, Californian, winged and nodding

thistles. Premix 1 g Boomer per litre of water, make certain the roller is wet before starting. A second pass

in the opposite direction should be done where there is a large infestation of weeds.

Boomer is extremely damaging to ryegrass/white clover pasture. Soil residues may also prevent quick

re-establishment of Ryegrass and Clover following application. A minimum of 3 months is recommended

before attempting to over sow. It is also recommended that a small area should be sown first to check for

any harmful residues. The persistency will vary depending on dose rate, soil type and rainfall.


Where water has a high pH or water containing calcium salts cannot be avoided, the addition of a product

to reduce the pH is recommended to reduce chemical deactivation and hydrolysis.

It is an offence for users of this product to cause residues exceeding the relevant MRL in the Food

Notice: Maximum Residue Levels for Agricultural Compounds.

WITHHOLDING PERIOD: Do not graze sprayed areas with dairy cows within 3 days after application or 1

day after with other stock. When spraying ragwort plants become palatable to stock, so do not allow stock

onto sprayed areas until plants have died.


Do not spray if rain is expected within 6 hours of spraying, however 12 hours drying is preferable.


Boomer is compatible with most commonly used herbicides.

For pasture application do not mix with hormone type products such as 2,4-D or MCPA as severe pasture

damage may result.


Black nightshade, woolly nightshade, boxthorn and many grass species including browntop, cocksfoot,

kikuyu, pampas grass and paspalum.

SHELF LIFE: When stored appropriately this product should show no significant degradation for two

years from the date of manufacture. Contact your supplier for further information about the use of any

product that is older than this.


This formulation is warranted to contain the specified active ingredient within accepted analytical

tolerance when packed. The user bears the risk for damage resulting from factors beyond the

manufacturer's control. The manufacturer declines all liability for damage resulting from improper storage

or use of the product.

Registered pursuant to the ACVM Act 1997, P9716


for registration conditions.

Approved under the HSNO Act 1996, HSR000242


for Controls.

For additional compliance information refer to


Weed Species

Handgun rate

g/100 litres

Knapsack rate

g/10 litres



g/10 litres

Boom/Aerial and

ground rate


Critical Comments


Apply November to May to singular bushes that are less

than 3 metres high for optimum results.




Use the higher rates on blackberry in some areas of

Northland and the east coast of the North Island. January

to May is the best application time but can be applied from

November to June. Spray before leaf discolouration occurs.


Spray in January-June when fronds have unfurled but

before frost browning. For best results burn plants and then

spray frond regrowth.


Best control is achieved when weeds are actively growing,

preferably during the period November to May. Use 100ml

of an organosilicon penetrant per 100 litres of spray.


Apply to actively growing weeds.

Broadleaf weeds

Apply to actively growing weeds.



Apply any time of the year, best when plant is actively

growing. Use 100ml of an organosilicon penetrant per 100

litres of spray.

Seedling Gorse


Best control is achieved when weeds are actively growing ,

preferably during the period November to March. Apply to






3 metres high

optimum results.


Apply to actively growing weeds. Use only in waste areas,

sheep camps or where pasture damage is acceptable.


Apply to actively growing weeds.


Complete coverage of all parts of the bush is essential for

complete control.


Apply to actively growing plants, usually December - April

Old Mans Beard

November – May is best application time. Use 100ml of an

organosilicon penetrant per 100 litres of spray.


Apply to actively growing plants during spring or autumn



Can be applied to any growth stage, although Rosette

stage is preferable. On hard to kill plants use the higher

rates as well as during autumn and winter when less plants

are less active.

Sweet Brier

Best control is achieved when weeds are actively growing,

preferably during the period November to April. Complete

coverage is essential.







organosilicon penetrant per 100 litres of spray. Control of

large plants may be marginal.


Apply to actively growing plants.

Wild Ginger

Spray plants from spring to late autumn.


Best control is achieved when weeds are actively growing,

preferably du

ring the period November to April. Ensure

trees get complete coverage.




Critical Comments

Forestry - Radiata pine only

170 g/ha

Used to control bracken, blackberry and seedling gorse in a pre-plant treatment

only. Do not plant any trees within 2 months of application

Ref No P9716-01

Public Record of Delegate Decision

For granting an application for registration under section 21 of the Agricultural Compounds and Veterinary

Medicines Act 1997

Product details

Trade name


Ref No



Relyon NZ Limited

Application type


Date of Delegate


30 July 2019


Expiry Period

This registration will expire 5 years from the date of this Delegate’s Decision.





Application eligible with no CI to protect

Summary of reasons for the Decision to grant the Application

Except for the trade name and registrant, this product is identical in all respects to an already registered product.

Recommendation to Register

On the basis of the above information, the product as approved, and when imported, manufactured, sold or used

in accordance with the conditions listed below, is not likely to cause unacceptable risks to:

public health

trade in primary produce

animal welfare or

agricultural security.

In balance, there are sufficient benefits to warrant this product to be registered.

When used in accordance with this approval, the product is not likely to cause residues in primary produce, food

or food-related products that would breach domestic food residue standards.

The assessed label content is adequate to provide sufficient consumer information to allow the product to be used

appropriately and safely and meets labelling requirements.

Delegate’s decision

Being satisfied of the matters above, and under delegated authority pursuant to the Agricultural Compounds and

Veterinary Medicines Act 1997, this application for registration is granted, under section 21(1)(d) under the

conditions as listed on the Register.

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