New Zealand Launches Digital Tool to Combat Billion-Dollar Weed Problem

The Department of Conservation (DOC) is introducing a new digital tool called the Smart Weed Alert Tool (SWAT), designed to tackle New Zealand’s billion-dollar weed problem. The tool, launching on Tuesday, aims to detect and alert users about new or fast-spreading weeds more efficiently than manual methods.

Dr Kate McAlpine, the tool’s creator, believes SWAT can significantly reduce the impact of invasive weeds on farms, forestry, and native species. McAlpine, who has a PhD in weeds, developed the idea at an AI hackathon and collaborated with experts over three years to bring it to life. The tool has already gained international attention and will be featured at global climate change talks in Armenia.

SWAT works by automatically scanning databases for plant observations and alerting users when new weed threats are identified. It can customize alerts based on specific weed types and locations, using data from sources like the Global Biodiversity Information Facility. The tool has already helped identify historical weed infestations that were previously unknown to local councils.

The tool’s prototype has received positive feedback from councils and community groups. Te Papa curator of botany Leon Perrie was alerted to a previously undocumented fern in northern wetlands, while the Waikato regional council discovered six historical infestations. Heidi Pene, a pest plants expert, praised SWAT for its potential to revolutionize weed management.

SWAT was developed through the Govtech Accelerator programme, which uses start-up tech to solve public problems. The direct cost of weed control in New Zealand is estimated at $50 million annually. McAlpine hopes the tool will spread quickly, as it provides a powerful solution for systematic surveillance of invasive species.