Frank Giles, owner of the Seaview Farm, has participated in biological farming, also known as mineral balancing, on his property for the last 12 years.

The practice eschews the use of chemicals in growing produce and instead promotes the use of fungi, minerals and amino acids to help fertilise crops.

Biological farming is believed to increase the longevity, flavour and nutrition of produce.

Mr Giles said people were unaware of the benefits, but hoped that an information session with esteemed Victorian agronomist Peter Norwood last week would help educate others.

"Everything comes from the soil," he said.

"A lot of farmers still mine, rather than farm, they're taking minerals out and not putting them back, so it affects the health of everything when you do that. I'm just trying to get people interested in human health and benefits that this practice can have on one's health."

Mr Giles said a lot had changed since he first began farming and he has noticed several negative changes in people's health since the introduction of chemicals on farms.

"When I went to school a bloody long time ago, there were no fat kids and there was no asthma - we didn't even know what that was.

"Using minerals, my blueberries can last up to six weeks without refrigeration. Food doesn't go mouldy, it just dehydrates over time."

Natural Resource Management North sustainable agriculture officer Peter Heading said mineral balancing had been around for half a century.

"It's a growing area in Tasmania," he said. "It still involves using some chemicals, but it's about balancing those chemicals with everything else, so there's not too much of anything.

"It's a change from the normal and I'm certainly hoping a lot more farmers take up the practice."

Agronomist Peter Norwood will be giving talks across the North-East on the benefits of biological farming.