A tiny Japanese insect that could help the fight against an aggressive superweed has been given the go-ahead for a trial release in England.Since Japanese knotweed was introduced to the UK it has rapidly spread, and the plant currently costs over £150m a year to control and clear. But scientists say a natural predator in the weed's native home of Japan could also help to control it here. The insect will initially be released in a handful of sites this spring. This is the first time that biocontrol - the use of a "natural predator" to control a pest - has been used in the EU to fight a weed.
A tiny Japanese insect that could help the fight against an aggressive superweed has been given the go-ahead for a trial release in England.
Since Japanese knotweed was introduced to the UK it has rapidly spread, and the plant currently costs over £150m a year to control and clear.
But scientists say a natural predator in the weed's native home of Japan could also help to control it here.
The insect will initially be released in a handful of sites this spring.
This is the first time that biocontrol - the use of a "natural predator" to control a pest - has been used in the EU to fight a weed.
