WA Nats bothered by Nahan's port road trip

Nationals WA leader Terry Redman is unimpressed with state treasurer Mike Nahan heading to the bush to lobby farmers about the Fremantle Port sale in a bid to pressure the party to accept it.

Mike Nahan told a business function on Tuesday that the key reasons the proposed sale was rejected by the Nationals - access and pricing arrangements - would be addressed in amended legislation to be introduced to parliament.

His regional road trip started in Northam, the electorate of Nationals WA deputy leader Mia Davies.

Mr Redman was not happy Ms Davies had only five hours notice of the visit, learning about it via a newspaper ad.

"It concerns me that there is new information being presented that hasn't either been presented to myself or the deputy leader or any of the Nationals ministers to that forum," he said.

"But Mike is entitled to, as treasurer, prosecute his arguments. A big proportion of this debate was around process. What Mike's doing now, in my view, should have happened some time ago."

Dr Nahan concedes the National's opposition means the sale almost certainly won't be achieved in this term of government, but he wants to go to the March 2017 state election with a commitment from the party to back it.

Despite the port sale not being a certainty Europe's Port of Rotterdam, until recently the largest in the world, has hired local advisers and is a bidder for Fremantle, the Australian Financial Review reported.