The call is in the wake of Western Australia's decision to allow GM crops to be grown in WA.

“WA’s foolish decision to open up themselves to GM crops should not influence SA at all,” Mr Parnell said.

“We need to make our own decision about what is best for our State.

“South Australians have made it abundantly clear over many years they don’t want open slather on GM food technology.

“The Greens believe we must continue to embrace and foster our ‘clean and green’ marketing advantage.

“WA’s move actually offers us an opportunity to target markets, like Japan, that continue to reject GM crops.

“The Greens call on the Rann Government to hold the line and publicly commit to a further extension of the GM crop moratorium in SA."