OTTAWA - Opposition MPs say it's time for the government to abandon its campaign to end the Canadian Wheat Board's monopoly on sales of western barley.

Liberal Wayne Easter says consecutive losses in the courts make it clear that the government can't go on.

He says the move to allow farmers the choice of selling their barley themselves or through the board threatens the existence of the marketing agency.

The Federal Court and the Federal Court of Appeal have both ruled that the government can't change the barley marketing rules through regulations and must follow a process set out in the Canadian Wheat Board Act.

Agriculture Minister Gerry Ritz says western producers support the change and the government will bring in legislation to allow them a choice.

The opposition parties have said they'll fight such legislation.