Both sides of Queensland politics have united to pressure the Prime Minister to stop the compulsory acquisition of prime agricultural land for an army training ground expansion.

The Australian Defence Force (ADF) wants to acquire thousands of hectares north of Rockhampton to expand the Shoalwater Bay facility to cater for larger war games and an increased number of Singaporean troops training in the region.

Graziers are devastated and angry, but farmer lobby group Agforce believes there is still room for negotiation and the state's two major parties are petitioning the Federal Government.

About 50 graziers have received notices, including Linda Geddes.

She will know next month if her 15,378-hectare cattle farm, which has been in the family for 140 years, will be swallowed up.

A map of the proposed Defence expansion area at Shoalwater Bay. ( Department of Defence )

"We're wondering at our age what we do next?" she said.

"We don't want to retire. It makes it difficult to move on and do something else."

Premier angry at lack of Federal Government consultation

Defence can acquire state government land under the Commonwealth land acquisition act.

Premier Anastacia Palaszczuk visited the region today and said the Federal Government had not consulted the community.

She said she would take graziers' concerns to the Prime Minister.

"We're angry about it. What the Federal Government has done is turn the back on these families," she said.

"The … expansion is not needed. The Shoalwater facilities are enough."

Hundreds turned out to a community meeting in Marlborough on January 9. ( ABC News: Isabella Higgins )

LNP Opposition leader Tim Nicholls has already written to Malcolm Turnbull asking him to intervene.

The party's agriculture spokesman, Dale Last, said the ADF should find alternative land that is not prime agricultural land.

"They need to look further afield, go into some of that more marginal country where they're not going to have such a big impact.

"Basically it's Big Brother — the Federal Government has come in and is kicking them off their land."

AgFrorce president Grant Maudsley said the acquisitions should be voluntary.

He said there also needed to be data presented about the impact of the acquisition plans on the local meatworks industry.