ORGANISERS of the Henty Machinery Field Days are promising a fresh approach to next month's event.

Several changes have already been made, including the introduction of a new theme song and the ability for exhibitors to book online.

The new theme song was written and performed by Albury singer and songwriter Paul Gibbs.

It replaces the iconic HMFD jingle that features the words "going to the Henty Field Days, lot of good people there".

The original song was used under licence by the HMFD from its copyright owner, Mike Cahill.

Mike runs an advertising and marketing business in Sydney and said while he is sorry the song had been replaced, change was inevitable.

"Many young people in their '20s can still recall the song and it has become somewhat an anthem for the Henty region," Mike said.

"But if change is needed, so be it.

"However the HMFD board is welcome to the copyright of the original song if it wants it."

The new song, which features references to tractors being driven by satellites and computer forecasting, closes with the line "we're heading to Henty Field Days for a brighter farming future".

HMFD chief executive Doug Meyer said it was time for a new tune that reflected today's farming.

Apart from a comprehensive line-up of machinery, this year's Henty field days will also focus on cropping and grazing, thanks to a 2.5ha trial plot at the field days site.

NSW Department of Primary Industries agronomist Janet Walker said the Henty trial site played an important role for district grain growers and graziers.

"With the resurgence of lamb and mutton prices, graziers are keen to see what pasture and other species such as brassicas perform best in local conditions," Janet said.

"There is also still a lot of interest in cropping and we have some of the latest cereal and legume varieties growing in the trial site.

"There is also a pre-emergent herbicide demonstration plot as well."

Janet said another interesting exhibit would be a demonstration of a biochar product.

"We have a biochar trial as well," she said.

"That's where a material, in this case chicken manure and compost, is burnt with not quite enough oxygen, which leaves a charcoal-like residue.

"The burning can be used to produce energy and the biochar can be used to put back into the soil."

Janet said crops in the Henty district were looking well.

"Seasonally, the start to the year was excellent," she said.

The field days run from September 21-23.