It comes with the wake of the State Government announcement that a final decision will be made on a proposed Wellington weir next month.

It also follows last week's rally at Parliament House where nearly 5000 supporters converged on North Terrace to highlight to the Murray's increasingly bleak outlook.

South Australian Murray Irrigators chairman Tim Whetstone said pressure on the government needed to be maintained, as urgent action was required before the October deadline given by some scientists.

"This issue is bigger than anything else going on in the State," he said.

Although invited, Prime Minister Kevin Rudd, State Premier Mike Rann, Ms Maywald, and Federal Water Minister Penny Wong were not in attendance and the booing crowd acknowledged their absence.

* Extract from a full report in Stock Journal, August 8 issue.