A DARLING Downs farmer has has sent a direct appeal to world leaders attending the G20, ploughing the message GO SOLAR in giant letters in a field.

Rob McCreath, a Felton farmer who led the fight against Ambre Energy's plans to set up a petrochemical plant near his home, said he was prompted to take action after Brisbane Airport rejected a billboard calling for climate change to be put on the G20 agenda.

"Farmers are at the pointy end of climate change," Mr McCreath said.

"Last year was our hottest on record, this one's shaping up to be even worse, and we've got a raging drought over a vast area.

"In spite of the overwhelming scientific evidence, our idiotic politicians are hooked on coal and gas, which is the cause of the problem.

Reader poll Is enough done in Australia in terms of solar power? This poll ended on 10 November 2014. Current Results Yes 7% No 92% This is not a scientific poll. The results reflect only the opinions of those who chose to participate.

Rob McCreath's message to world leaders attending the G20.

"Australia is one of the richest per capita countries in the world, with the highest per capita greenhouse gas emissions in the developed world. We have huge reserves of sunshine, so making use of it is simply a matter of common sense.

"Our government's reluctance to do so is an international embarrassment.

"Unlike coal, solar power really is good for humanity, because it can provide the clean energy needed to lift people out of poverty across the world, without stuffing up the climate even more."

Mr McCreath said he hoped Angela Merkel "shirt-fronted" Tony Abbott and ask "If Germany can go solar then why on earth can't Australia?"