Australia's wine crop is in danger from a swarm of 100 billion locusts that are set to ravage vineyards.

The plague is expected to be the worst in several decades as a wet southern summer has produced ideal breeding conditions.

A big locust outbreak has already attacked New South Wales and Western Australia's wheatbelt.

The Plague Locust Commission estimates that the insects could cause A$200m damage to cereal, vegetable and wine crops in the eastern states.

David Robertson
just-drinks.com Asia-Pacific correspondent