Tensions are simmering in the Napthine government after Agriculture Minister Peter Walsh unexpectedly declared the Coalition would go to the election with a policy for no new national parks.

In a move that caught many of his colleagues by surprise, the Nationals deputy leader made the announcement at a recent forestry industry dinner, putting the government on a collision course with community groups, who had been assured a proposal for a new park in the state's north-east was being considered.

Agriculture Minister Peter Walsh. Credit:Eddie Jim

Environmentalists have been pushing for the creation of a proposed Great Forest National Park stretching between Kinglake, Baw Baw and Eildon in a bid to protect the Leadbeater's possum after the 2009 bushfires destroyed 45 per cent of its habitat.

The idea was being examined by a National Parks Advisory Council that reports to Environment Minister Ryan Smith. However, Mr Smith's office was not aware of Mr Walsh's announcement when contacted by The Sunday Age last week and had to take advice before confirming that, "as the Minister indicated, the Coalition has no plans to announce new national parks during the campaign".