Mr Klein said there had been "more than enough debate" and a decision was needed to provide the State's farmers with the choice to use GM canola in their cropping rotations.

"The feel of the agriculture industry now is that we need to remove the moratorium to go forward," he said.

"With the changing climatic conditions, it is imperative that SA farmers have as many tools and choices as possible to maintain the viability of their farming enterprises. If we wait until next year for a decision, it will be two years before farmers will get the opportunity to use the technology.

"The science is there and needs to be accepted and acted upon."

Under present arrangements, SA has banned all GM crops until early 2010 when the moratorium will be reviewed.

But as The Nationals sole member of Parliament in SA, Ms Maywald said in a statement that she was not convinced.

"There is no compelling case put forward to suggest there is any advantage for SA growers to have access to these products," she said.

"It is my understanding that the State Government is watching to see how New South Wales and Victoria address the key issues of segregation and regulation in their states."

Newly-appointed Agriculture Minister Paul Caica confirmed the Labor government's ban on GM crops remained.

"The government considers the benefits of maintaining a prohibition on the cultivation of GM food crops outweighs any benefits of allowing it to lapse," he said.

Shadow Agriculture Minister Adrian Pederick said Mr Klein's comments highlighted a Nationals' split.

"His comments are totally contradictory to what the Member for Chaffey (Ms Maywald) is supporting in the Labor government," he said.