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Huge cannabis crop harvested at Tamworth with custom machine

The plant, which contains less than one per cent THC, will be used for clothing and building materials. (ABC New England North West: Kemii Maguire)

Sprawling across 180 hectares, one of eastern Australia's largest industrial cannabis crops has been harvested for the first time and cutting it has been no small feat.

The crop was planted in October less than 10 kilometres from the middle of Tamworth, in north-west NSW, on council-leased land that only uses wastewater for irrigation.

The initiative is normally used to grow lucerne hay or cotton, but the hemp crop has yielded an estimated bail of up to 14 tonnes per hectare.

Qurindi chaff and hay grower David Wallace said he had been waiting for just such an opportunity.

"We've been bagging hemp for other growers for quite a while at Manuka Farm, but only in small parts," Mr Wallace said.

"It wasn't until we got the opportunity to lease the reuse farm with the amount of water needed to grow it to an industrial scale that we took it on.

"There's been medicinal hemp, recreational hemp, and all of them have been growing in the background for many years.

But we hope that this is a stepping stone to make it into an industrial scale for eastern Australia.

The crop is less than 10 kilometres from the city centre. (ABC New England North West: Lara Webster)

Although the cannabis plant uses the same amount of water as lucerne and cotton, Mr Wallace said the challenge of growing it on wastewater was to use all of its resources.

"We have to use a set amount of water every month, which we need to use all of, so we'll now have a cropping rotation and resow the cannabis in October."

As part of Tamworth Council leasing its land, all of the monthly allowance of water must be used. (ABC New England North West: Kemii Maguire)

The plant has been pre-sold to textile operations, which will mill its fibres to use for clothing and building materials.

Mr Wallace said the plant could be used for "anything".

"You have hemp in concrete, clothing — even Mercedes car panelling has it, because it's flame proof," he said.

Ian Wise first harvested cannabis 17 years ago, but never on such a scale. (Supplied)

A new leaf for harvesters

The harsh, bamboo-like texture of cannabis may have handled the wet summer of Tamworth, but ordinary machinery could not handle it.

Two years ago, contract harvester Ian Wise was asked if he could find a way to bring the crop in.

"When I was asked if I could cut it, I sort of thought to myself, 'That's a challenge,'" he said.

"We've had to redesign the entire process because it's fibre, so it's got a tough centre stalk and grows above your head."

Mr Wise says the sticker is just about the only thing left of the machine he started with. (ABC New England North West: Lara Webster)

Mr Wise spent the past several years and half-a-million dollars designing a new harvesting machine that is the first of its kind in Australia to handle a large-scale plantation.

Before its first run in Tamworth, it was trialled harvesting everything from sorghum crops to PVC pipes.

"It's based from a Class Jaguar unit," Mr Wise said.

"But I think the only thing left of the Jaguar is the sticker on the front.

The plants are harvested when they grow to about 2 metres. (ABC New England North West: Lara Webster)

'Take that leap of faith'

Mr Wise hoped that investing in the machine means there may be other crops that begin in eastern Australia.

But he says the stigma and red tape surrounding the cannabis industry remains strong.

"People have got to get over the thought of it as a [drug] plant — if you tried to smoke it, you'd have a ripper of a headache and a good dose of diarrhoea," he said.

"But, if someone doesn't take that leap of faith, then it's never going to take off.

"It's a big risk."

Growers will soon determine the quality and price of its fibre. (ABC New England North West: Lara Webster)

Mr Wallace agreed and said growing the Tamworth crop was a learning experience.

"It's very susceptible to different soil types and even differs on the same pivot," he said.

"As environmental limits increase for farmers, I think they'll look more towards this — like how quickly it grows compared to trees."

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