Planes will spray locusts in the Murray Mallee from next week, after South Australia said in September the region wasn't suitable for it. For farmers who've been asking for help since April, the question now is whether it's come in time.

An adult Australian plague locust resting on gravel beside the Murrumbidgee River in New South Wales in April 2010. Photo: Bidgee / Wikimedia Commons, CC BY-SA 3.0, modified.