Breadcrumb navigation

Phosphite boost to kauri defence systems

Published: 12 June 2019

Tweet this quote Share Share this

Curbing kauri dieback with phosphite

For the past 16 months, Auckland Council has been delivering phosphite to infected kauri in the Waitākere Ranges.

The first large scale application of phosphite as a treatment for kauri dieback was delivered in early 2018 with over 3700 kauri treated in the catchment of the Maungaroa Ridge area of the ranges.

Another long-term field trial in the Piha catchment has seen a further 7019 trees injected over the last year.  

While phosphite does not represent a ‘cure’ for kauri dieback, it does offer protection to individual kauri trees to fight back. Phosphite has been used since the 1970s to protect crops like avocado, pineapple and cocoa against diseases but only recently tested on kauri. 

The initial trials have helped deliver best practice in the large-scale use of the chemical in treating kauri in a forest setting and will enable the long-term impact monitoring of the trees with the symptoms, to better understand the potential of phosphite as a treatment in a variety of situations.

Once more is known on the effectiveness of the injection, treatment procedures may be updated.

Related

2040 Movie: Presented by CaliWoods

Discover what the future could look like if we simply embraced the best that exists today.

Historic location recognised in Onehunga

New signage is being installed to shed light on the hollow and pond at Puka and Grotto Streets in Onehunga.

Cup lending network provides easy solution to takeaway coffee without the landfill

Reusable cups are being rolled out to cafes across Auckland with the help of the council's Waste Minimisation and Innovation Fund.