The who’s who of local, state and federal parliament descend on Gunnedah for the three days, and this year has been no exception.

The Nationals have made their presence strong, bouyed by the recent win for the Liverpool Plains with the state buy-back of the Caroona mining licence. Deputy Prime Minister Barnaby Joyce, and his deputy Nationals leader, Fiona Nash were spotted in the crowds.

So too their state counterparts Deputy Premier Troy Grant and Minister for Primary Industries, land and Water, Niall Blair.

Local MPs Kevin Anderson, Sarah Mitchell and John “Wacka” Williams also made the trek. There was a positive attitude but the NSW Greens say more needs to be done to address climate change and its impact on agriculture.

And Greens MLC Jeremy Buckingham says it’s a matter of urgency to find ways for agriculture to grow while climate change looms.

The Greens used day one of AgQuip to launch their "climate not coal" campaign, on the back of their ongoing "farms not coal" initiative of recent years.

"We need to have a conversation with the agriculture sector about climate change,” Mr Buckingham said.

"That's why we are launching this initiative, which is putting $50 million into a centre for excellence for research and development to deal with impacts of climate on agriculture.

Gunnedah has been a National Party stronghold at state and federal levels for some years now, but Mr Buckingham said taking the campaign to the bush wasn't about winning votes.

"The conversations that we have in Gunnedah, with the farming community, we then take back to policy that builds our credibility in the cities," he said.

"We can go back say we have talked to farmers, our policies are based on an approach that is recognising their needs, the realities of modern agriculture. It's not about winning votes here, it's about building a conversation."