A new report from Australian organic certifying body Biological Farmers Australia says one in 10 primary producers will be farming organically by 2020.

The report says the number of organic producers has grown by 20 to 30 per cent over the last two years but that still represents only 2 per cent of all primary producers.

The groups chief executive, Dr Andy Monk, says the industry needs more organic farmers because at the moment demand for produce both domestically and overseas is far greater than supply.

"As the industry is still emerging, the markets do flood every now and again, but overall that's anything from fat lambs to wheat and other things," he said.

"People are desperate for things like wheat and sorghum, and the list just goes on."