CO₂ hot water system slashes dairy shed energy costs
A Taupo company says it's the first to bring CO₂-powered water heating technology to New Zealand dairy sheds, helping farmers cut energy costs by up to 85%.
Sustainability practices should not be regarded as a cost, but as a benefit, he says.
He was addressing a field day Ngai Tahu staged recently as a finalist in this year's Ahuwhenua Trophy competition to determine the top Maori dairy farm in NZ. Ngai Tahu is one of three finalists.
Ngai Tahu's farms Te Ahu Patiki and Maukatere, located near Oxford, Canterbury, were formerly forest, now cleared. The farms are irrigated from the Waimakariri River.
At the field day about 300 people heard that Ngai Tahu is moving to ensure its dairying farming is sustainable. Its projects include placing lyscimeters around the property to accurately measure environmental factors.
"This is based on a concept of tikanga (culture) which says you can do things well and you can do things right, but there is difference between doing that and the 'right thing'," Priest told Rural News.
"What I mean is we could do our farm environmental plans and we could meet our consents. But we want to go further than that; we want some of these projects onfarm to go above and beyond what we are required to do."
He believes if the wider dairy industry adopts the sustainability measures developed by Ngai Tahu it will be more competitive and will resonate well with international markets and make the NZ sector more competitive.
Irrigation is the key to the success of Ngai Tahu's farming operations near Oxford, especially given the land has only recently been converted to dairying and is of poor quality.
Ngai Tahu Farming Ltd chair Gill Cox referred to the business's profitability, achieved responsibly. It takes marginal land and turns it into productive land. Ngai Tahu people farm the land as good corporate citizens for NZ and helping NZ's productivity.
"We harness the water, use it responsibly, treating it as having real value and being a scarce resource we use in the most efficient way," Cox explains. "Many people, especially those from urban areas, see irrigation water linked to dairying only, and dairying has been linked to the word 'dirty'. But irrigated land [is not used only] for dairying."
Ngai Tahu has a lot of land, much of it unsuitable for dairying. For example, it has 30,000ha in high country stations and a new block it's developing at Balmoral, likely for beef farming. Long term Ngai Tahu will look at horticulture and cropping options, Cox says.
"[We respect] the land, using it productively for the benefit of Ngai Tahu and other people and for the overall benefit of the NZ economy."
