The debate around how farmers best cut emissions is expected to get heated.

A group made up of agricultural sector industry bodies and Māori have come up with an alternative to the Emissions Trading Scheme, in which farmers assess their own liability for levies.

They say their plan would lead to methane reduction of between four and 5.5 percent by 2030.

Climate Change Minister James Shaw told Mike Hosking he expects things to get feisty.

“We know over the course of the last few years there’s been a huge range of opinion; you listed obviously the environmental groups, within the farming sector itself there’s a very wide range of opinion about which direction to go down.”

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