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How To Control Chafer Grubs and Leather Jackets

How do I identify them?
See our A to Z guide on Chafer Grubs and Leather Jackets HERE

 

How do I control Chafer Grubs?
Once you have established that you do have an issue with the Chafer Grubs then you need to look at ways to control them. Since the main product that was used for control, Merit Turf, was withdrawn from the market a few years ago, there has not been a chemical that has been approved for this use. However, in the Summer of 2018, a product called Acelapryn was given an emergency approval for use in the UK for the control of Chafer Grubs and Leather Jackets, but only on airports, golf courses and race course. It is hoped that this emergency approval is brought out again in following years.

This means that for the homeowner, the only real option left to them to control Chafer Grubs is to use a bio-pesticide called NEMAcontrol. Please see this product at the bottom of this page.
This is a living microscopic worm that will seek out the Chafer Grubs, penetrate them and then infect them with a bacteria which stops them feeding and then they quickly die. The nematode will then leave the grub and seek out another one to infect.


How do I control Leather Jackets?
Since the main active ingredient that was used for control, chlorpyrifos (Dursban, Cyren etc., was withdrawn from the market a few years ago, there has not been a chemical that has been approved for this use. However, in the Summer of 2018, a product called Acelapryn was given an emergency approval for use in the UK for the control of Chafer Grubs and Leather Jackets, but only on airports, golf courses and race course. It is hoped that this emergency approval is brought out again in following years.

This means that for the homeowner, the only real option left to them to control Leather Jackets is to use a bio-pesticide called Nemasys F. This is a living microscopic worm that will seek out the Leather Jackets, penetrate them and then infect them with a bacteria which stops them feeding and then they quickly die. The nematode will then leave the grub and seek out another one to infect.

 

When do I need to apply treatment?
The first application of them wants to be made in the late Summer/early Autumn and then a follow treatment in the Spring if the problem is very bad. The soil needs to be damp/moist when the nematodes are applied and then they need to be watered in afterwards as they are very susceptible to dry conditions and will die if they are not watered into the soil. In order to get the absolute best from these products, it is best to scarify the lawn first so that there is not thatch for the nematodes to get stuck in and then aerate the soil too as this will create gaps for the nematodes to get down. Then apply the nematodes with the equivalent of 200ml of water per meter square and also use a wetting agent such as Abzorb in order to assist them penetrating the soil. Then ensure that the lawn is kept moist for a few weeks after application by using a sprinkler or hose pipe.

Once you have done the second treatment in the Spring then you will need to look at trying to get the lawn back into shape ready for the Summer. For ideas on how to achieve this then look at our other How To Guides.

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    NEMAcontrol

    For The Control Of Vine Weevil & Chafer Grubs

    £35.99 Inc VAT £29.99 Ex VAT

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