X-ray Technology Assists Marlborough Council in Tree Removal Decisions

The Marlborough District Council has adopted an x-ray technology to determine the health of poplar trees lining the Taylor River. Of the 40 trees inspected between High St and Burleigh Rd bridges, 23 required further assessment by an arborist.This advanced x-ray, known informally as ‘Tomo’, detects decay and cavities in trees by gauging resistance to radio waves. As a result of this testing, nine trees were identified with varying levels of decay, with the recommendation they be removed as resources permit.

Robert Hutchinson, the parks and open spaces officer, mentioned that a section of the Taylor River Monro St car park was shut due to safety concerns regarding three poplars. Although only two exhibited significant rot, the third was at risk because it relied on the protection of the other two trees.

David Croad, the chairperson of the assets and services committee, praised the clarity of results from the technology, while councillor Jamie Arbuckle saw the potential time-saving benefits from using the new system.

Although the technology has existed for two decades, its capability has advanced significantly. Initially, it required drilling into the tree; however, modern versions are non-invasive.

The committee approved the tree removals, with final decisions expected from the full council on October 26. The committee also approved the removal of an unhealthy eucalyptus tree in Picton’s Waitohi Domain.