Slug

Widely present in many horticultural and arable fields, slugs can damage crops all year round. With impacts on yield and/or quality potentially severe, it is important to suppress populations of these mollusc menaces.

Our guidance provides details of the main slug species of UK field crops, highlights the main risk periods for specific crops and presents options for control.

What are the main slug species of UK crops?

The UK plays host to around 40 slug species, although only a few are major crop pests. Learn how to spot the tell-tale signs of the four slug species commonly found in the UK’s fields.

What are the main slug species of UK crops?

How do slugs damage crops?

Slugs are a primary pest in many field crops, affecting both yield and quality. The impact depends on the size and activity of the population, as well as the crop and its growth stage.

How do slugs damage crops?

What conditions favour slugs?

With each slug capable of producing up to 500 eggs, these pests are egg-laying machines. By understanding the environmental factors that influence slug activity, it is possible to target control.

What conditions favour slugs?

How to suppress slugs with cultural control

With chemical and biological control options for slug control limited, efforts to prevent slug populations from spiralling out of control rely increasingly on the use of non-chemical approaches. With each solution only providing partial control, a combination of tactics is often required.

How to suppress slugs with cultural control

How to monitor slug populations in field crops

To target slug treatments, both across and within fields, it is important to monitor pest activity during a crop’s most critical growth stages.

How to monitor slug populations in field crops

Chemical and biological control of slugs

Understanding how slug control options work, along with the use of monitoring and damage-risk thresholds, will help you target treatment effectively.

Chemical and biological control of slugs

Further information

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Integrated Pest Management (IPM) is based on a diversity of pest management measures (prevention, non-chemical control, best practices for optimizing pesticide efficiency, etc.). These are combined at the farm level to enable reduced reliance on pesticides, and therefore a decrease in the exposure of the environment and people to pesticides.

We deliver transformational projects to drive productivity and boost farming and supply chain businesses. We want the industry to thrive in a rapidly changing world and continue to produce high quality food, maintain our beautiful landscape and leave a legacy for generations to come. 

Slugs can be a problem for many crops and cause injury to crop plants through direct feeding. 

Integrated farming is a type of farming that aims to maximize the efficiency and productivity of the farm by integrating different types of crops and animals into a single system.