Beef + Lamb New Zealand Awards 2026 Winners Announced in Christchurch
Last night saw the winners of the 2026 Beef + Lamb New Zealand (B+LNZ) Awards named at a gala dinner at Te Pae Christchurch Convention Centre.
Farmers may soon have another weapon for fighting the weed Californian thistle, says AgResearch.
Scientists there have developed a model that simulates population growth of the thistle -- a help in controlling the weed. It has just been published in the online publication Ecology and Evolution.
Californian thistle was recently estimated to cost almost $700 million each year in lost agricultural productivity in New Zealand.
Based on experimental data gathered by NZ and overseas scientists over many years, the model allows a comparison of different defoliation strategies, whether through the use of herbicide, mowing or biological control like the green thistle beetle (Cassida rubiginosa) which is now established in several parts of NZ.
Principal scientist Graeme Bourdôt says defoliation of the thistle is widely regarded as the most effective way to halt its population growth in a pasture.
"The amount of root the thistle produces over the growing season is what regulates population growth. The more you defoliate the thistle, the less root it can produce.
"We've always known there would have to be a 'tipping point' because the root can only be produced if there is foliage above the ground. So the tipping point has to be where you defoliate enough so the plant cannot produce enough root to replace what was there during the current season. This model allows us to figure out where that tipping point is."
Bourdôt says the model shows that a single defoliation during the growing season (typically December – March) and repeated each year isn't going to reduce the thistle, it will simply stabilise the population.
In comparison, the model shows that two treatments at specific times during the year will bring about population decline if repeated annually.
As an example, Bourdôt says, the model shows that if a farmer chooses to mow the thistle first in December and then again in February each year, then the thistle population is likely to go into rapid decline, halving in density each year. Mowing at other times of the year is likely to be less effective, causing slower rates of decline.
This backs up past field experiments and provides good guidance for farmers in all grazing systems in choosing the best time to defoliate the thistle.
Despite near universal optimism in the rural sector, a panel of New Zealand’s leading food and agri minds caution that the sector must be intentional about its future path.
The panel say this is needed if the sector is to successfully
navigate the social, economic, environmental and technological forces impacting its operating environment.
Their views form part of the latest version of Rabobank’s annual white paper ‘Succession 2050 – gearing up for New Zealand’s food and agri future’.
The white paper focuses on the topic of succession at an industry level.
In addition to Rabobank’s own insights, the paper brings together a selection of 14 leading New Zealand and international food and agri experts – including trade negotiators, economists, systems analysts, scientists and technologists along with sectoral experts in sustainability, the future of fibre and Māori enterprise – to share their perspectives on what the New Zealand food and agri sector could look like in 2050 and what needs to change to achieve that vision.
Launching the new paper at the Primary Industries New Zealand Summit in Auckland today, Rabobank New Zealand CEO Todd Charteris said the experts who contributed to the white paper had identified plenty of reasons for New Zealand to be confident about its food and agri future.
“To name just a few, we’re a major food producer in a food-hungry world that’s on track to need 56% more food by 2050,” he said.
“Our food and fibre exports are also growing strongly and are forecast to hit $64.3 billion for the year to June 2026, while our government has signalled its plans to help double overall New Zealand exports by 2034.”
While there were many reasons for optimism, Charteris said, the expert contributors had also noted a host of changes taking place across the global food and agri operating environment that would need to be navigated for the industry to achieve ongoing success in the decades ahead.
“A number of key changes shaping the future of the sector came through in the perspectives of the expert contributors,” he said.
“There are the well-canvased issues of increasing global food insecurity, the challenging trade environment driven by geopolitical tensions, and the need to produce food within planetary limits."
“However, the experts also raised emerging trends, including what we’ve called ‘Identity eating’ – which is the growing way of signalling who you are as a person through what you eat – and is leading to higher demand for ethical and health-conscious foods.
“Another key trend identified out to 2050 was ‘Exponential everything’, which covers the transformation of the sector through science and technology.”
Rather than let these changes wash over it like a tsunami, Mr Charteris said, the broadly held view among the expert contributors was that New Zealand’s agriculture sector would need to lean in and proactively shape the changes occurring around it.
“We heard this message in many different ways; whether it was influencing global trade policy, embracing technology, capitalising on sustainability, training up for the future, defending our advantage in dairy or kiwifruit, growing Māori enterprise or more deliberately utilising all the wealth in our big blue backyard,” he said.
Charteris said the white paper contributors had identified 23 changes they would like to see in New Zealand between now and 2050 that will help set up the sector for success.
“Essentially, they boil down into five buckets with four to five ‘work ons’ in each bucket,” he said.
“At the centre, we need a change model that starts from the customer perspective and works outward from that, feeding into more purposeful decisions about land use and production systems.
“Then once we are clear on what customers are asking for and where we want to play, we need to stack talent and technology.
“Between these items we have the elements of a 2050 growth engine.”
What’s exciting, Charteris said, is that New Zealand has the geography, the capacity, the ideas, and the time, to make something outstanding of its future.
“My wish is that our experts’ thinking will inspire others to join me in pushing for a more deliberative strategic future for New Zealand,” he said.
The dairy industry cannot rest on its laurels despite providing one in every four export dollars earned by the country, says DairyNZ chief executive Campbell Parker.
The Government is looking at intervening on behalf of Waikato farmers who face new regulations around agricultural land use while Resource Management Act (RMA) reforms are underway.
The country's second largest milk processor, Open Country Dairy, is building a butter plant at its Awarua site in Invercargill.
After 25 years it is the right time to step away, says Colin Glass, the retiring chief executive of New Zealand's largest private corporate dairying company, Dairy Holdings.
Politicians calling for New Zealand to withdraw from the Paris Agreement on climate risk damaging two of our gold-plated free trade deals.