BOB Katter has announced Condamine farmer Rowell Walton as his candidate for the seat of Maranoa in a visit to the Brisbane Ekka today.   Mr Walton said he faced a significant challenge in contesting the safe seat, held by incumbent Bruce Scott with a primary vote of 67 per cent.

"It seems to be a very difficult task to unseat the incumbent, but my phone has running hot with people grizzling and we have agreed the voters of Maranoa should be given the choice," Mr Walton said.

Mr Walton said he would fight for the survival of rural communities to bring in laws such as a two-year moratorium on coal seam gas and limit foreign ownership of Australian agribusinesses and land.

Mr Walton said that after 12 months working with the Rural Finance Roundtable - which prompted the announcement in April of federal emergency relief funding of $420 million for concessional loans for farmers across Australia stricken by insurmountable debt - there was "unfinished business".

"The $420m was never sufficient for the need, but better than a poke in the eye, which we were told to expect," he said.

"We now need to push on with a reconstruction board, which I have spoken about with both Tony Abbott and now the Prime Minister."