Before the Federal Election earlier this year, the Turnbull Government committed to release the CFI methodology for consultation in time for forest industries to participate in the fourth Emissions Reduction Fund auction scheduled for November 16.

AFPA Chairman Greg McCormack said scientists had completed work on the methodology many months ago, and now was the time to release it.

"They have painstakingly done the maths and they say it is beyond doubt that plantations which are grown for 25 years or more will deliver carbon reductions and are valid participants in the ERF reverse auction process," McCormack said.

"It is inexplicable to the tens of thousands who work in forestry focused electorates all over Australia that the Government is still sitting on the methodology."

The National Farmers' Federation echoed McCormack's sentiments, and president Brent Finlay said the organisation had long called for the government to release more methods to enable farmers to be part of carbon markets.

"We know that the Government has a draft ERF method for commercial timber plantations sitting on the shelf waiting to be finalised," Finlay said.

"The Coalition committed to finalising this, but have failed to deliver on their election promise.

"The NFF holds dearly to the principle a landholder should be free to make the land use and production decisions that best suits their business - whether its plantation timber, carbon or some other commodity, the choice is one for the individual.

"It is very disappointing that timber growers have missed the deadline for the November ERF Auction. Growers must be given the opportunity to bid into the first Auction next year, but to do this they need a finalised method."

Finlay said the first step in finalising the ERF method would be the release of the draft method for public consultation. "We call on the Government to do this as a matter of urgency, so that farmers and foresters have more options to participate in the ERF."