Coronavirus: Karoonda Farm Fair among Murraylands public events, sporting competitions to pause during outbreak

Public events are becoming an endangered species in the Murraylands as the organisers of most announce postponements or cancellations due to the coronavirus pandemic.

Prime Minister Scott Morrison announced a ban on non-essential indoor gatherings of 100 or more people on Wednesday, with exeptions for shopping centres; medical, educational and correctional facilities; and public transport.

The Karoonda Farm Fair and the Unity College and Mallee school formals were among local events which pulled the plug even before that announcement, joining Murray Bridge High School's formal.

In a statement on Monday, farm fair organisers said it was "with great sadness" they had decided to cancel the event, scheduled for April 3 and 4.

"We ask that patrons contact us with regards to any entries, trade stalls, sponsorships et cetera to make all necessary arrangements," they said.

"We appreciate your patience and understanding during this time and hope to see everyone at our next farm fair on the ninth and 10th of April, 2021."

Unity College's formal will go ahead, but on September 25, the college told families.

It thanked its students for the "mature approach" they had taken to the issue.

Murray Bridge Speedway has cancelled the rest of its 2019-20 season, including three meetings scheduled in March and April, and will resume on September 19.

An attempt at a demolition derby world record has been rescheduled for October 31.

Horse racing will continue, but spectators will be barred from attending for the forseeable future.

A Lifehouse Church men's conference, an author talk at Murray Bridge Library and a John Mellencamp tribute show at Mannum's Pretoria Hotel are among the events to have been called off this weekend.

The Revolve 24 cycling race at The Bend Motorsport Park will be replaced with a casual cycle.

Sporting competitions have either cancelled their seasons or modified their plans.

Bowls SA recommended the abandonment of fixtures at all levels on Tuesday, putting an abrupt end to Saturday and weekday pennants and night owls competitions in the Lower Murray association.

River Murray Football League players will not play matches or train in groups before May 31, on the recommendation of the SANFL.

President Terry Connolly said the league would discuss a shortened fixture in case play was able to resume after that.

"We are fully aware that football plays an important role in our lives, however the most important thing is the health and welfare of our people," he said in a Facebook post.

River Murray netball trial matches were still a possibility, association president Tania Adler said on Tuesday, but the season was likely to be postponed.

Even events held last weekend felt the pinch.

The Purnong Water Regatta and Floatfest, held in that town for the first time, attracted no more than a handful of punters.