Pest experts are launching the initiative to change pest-control practices to head off the ban on metaldehyde, found in most slug pellets.

"Traces of metaldehyde have been detected in raw water at levels above some EU statutory limits," said a representative for the Metaldehyde Stewardship Group.

At present, the water industry, Environment Agency and the Pesticides Safety Directorate have backed a voluntary approach to manage the issue.

The stewardship group, which represents every user of the slug pellets, is hosting an event to explain the how the industry is responding to the challenge.

"The ingredient is favoured by 80 per cent of farmers using slug pellets and there are 27 brands," the representative said.

"Vegetable growers depend to a large extent on slug control. The issue is being talked about at the highest ministerial level and we will look at lowering usage and creating buffer zones through an industry-wide initiative.

"It must affect a change in how agriculture's number-one pest is controlled if the threat of a ban on this world-leading pest solution is to be avoided."

Speakers at Stoneleigh, Warwickshire, on 12 February include water consultant Bob Breach, agronomist Colin Myram and Certis director Robert Lidstone.

Members of the stewardship group include Lonza, Barclay Crop Protection, Certis, Chiltern Farm Chemicals, De Sangosse, Doff Portland and Makhteshim Agan.

- Email catherine@pinstone.co.uk