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Agrigem Specialist Amenity Products and Services

Asulox Herbicide 20L

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Asulox Herbicide 20L
£348.00 Inc VAT £290.00 EX VAT
  • Buy 4 for £289.99 (£347.99 incl. tax) each and save 1%
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Newly Approved For 2021 Bracken Control. Contains 400g per Litre of Asulam

Previously Called: Asulam & Brackn

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Key Information

Additional Information

Active Ingredient400g/L asulam
MAPP NO13175
Pack Size20L
Pack Size Coverage2-4 Hectares depending on rate
Knapsack Sprayer RateRecommended Rate 200ml in 20L of water, up to 5L in 20L
Boom Sprayer Rate11 L/ha in 400 - 500 L/ha water
Application Method(s)Boom Sprayer, Knapsack
Treats (Pest/Weed/Disease)Bracken
Area of UsePaddock, Pasture
Safe For Use OnGrass
Period Of UseJuly, August, September, Summer
Product LabelDownload


Over many years Asulox® has established itself as the UK’s market leading product for bracken control. The active ingredient, asulam, targets bracken infestations and is translocated throughout the plant to provide effective control. Herbicidal symptoms following application of Asulox® do not show in the year of spraying but in the following season there is little or no bracken re-growth. Completing a programme of follow up sprays with Asulox can greatly extend the bracken free period for land that has been treated.

Asulox®, along with all pesticides within Europe, has been subject to the EU Plant Protection Products Directive 91 / 414 which meant that all pesticide products in Europe had to undergo a rigorous re-examination of all the supporting data. Asulox® failed to gain approval (after appeal) by 20th September 2011. Because of industry wide support for the product, including organisations such as Butterfly Conservation and Environment Agencies there is an aim to obtain re-registration of the product. However in the intervening time it is hoped that it will be approved for Emergency Authorisation whereby it can be used annually for 120 days. Whilst there is no immediate sign of herbicidal symptoms in the year of spraying the following season there will be virtually no bracken re-growth.

Asulox has only been available under the terms of annual Emergency Authorisations, which have been granted for the whole of the UK by the Chemicals Regulation Division of the Health & Safety Executive (CRD) in response to an application submitted by the BCG (Bracken Control Group).

An approval for restricted use of Asulox has been granted for the 2021 control season.  This allows application from 1st July until 13th September, and to allow time for the disposal of stocks, the approval to store and transfer the product does not expire until 13th October 2021.  

The BCG submitted a further application to challenge the restrictions that were included in this year’s approval. The revised restrictions on the use of Asulam for bracken control during the 2021 season will be:

•    Aerial application of Asulox from a helicopter will be permitted subject to observing a buffer zone to protect surface water bodies that is 90m wide.  This has been increased from 50m in previous years.

•    Ground-based application of Asulox will be allowed on land designated for conservation or that is covered by an agri-environment scheme.  This is a change: under the earlier approval, no ground-based application was permitted.

For grassland treatments, recent trials of aminopyralid have shown some good results against Bracken as well as Docks. Squire is a selective broadleaf herbicide that is also clover safe.

Improve herbicide effectiveness by 20% by using Activate-G. This herbicide enhancer reduces loss of ingredient as it is drawn into the plant rather than evaporating on the surface.Save money and time and mix with Blue Dye to ensure no areas are missed or overdosed.

Our Recommendation:

- Always read the product label before use.

- Complete a program of Asulox® re-spraying to increase the product's effectiveness and keep bracken at bay.

- Ensure grass is not stressed and is growing well.

- Do not cut bracken for at least 4 weeks after treatment to permit movement of Asulox® to rhizome buds; preferably leave undisturbed until late autumn.

- Always wear protective clothing, such as Chemical Resistant Gloves, when handling Asulox®.

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