Friday, March 15, 2013
Kauri dieback: how you can help
This webpage is the home for information on kauri dieback for the whole of New Zealand. It has information on what kauri dieback is, the symptoms of the disease and how you can help stop it spreading. You can also find our fact sheet, technical documents and links to the organisations involved in the management of the disease.
What is Phytophthora taxon Agathis?
Commonly known as PTA, Phytophthora taxon Agathis is a microscopic fungus-like plant pathogen (a disease causing agent) that only affects kauri. Recent research has identified PTA as a distinct and previously undescribed species of Phytophthora.
What does it do to kauri trees?
Symptoms include yellowing of foliage, loss of leaves, canopy thinning and dead branches. Affected trees can also develop lesions that bleed resin, extending to the major roots and sometimes girdling the trunk as a ‘collar rot'. PTA can kill trees and seedlings of all ages.
Kauri are among the world’s mightiest trees, growing to more than 50 metres tall, with trunk girths of up to 16 metres and living for more than 2000 years. Kauri forests once covered 1.2 million hectares from the Far North of Northlanhttp://www.blogger.com/img/blank.gifd to Te Kauri, near Kawhia and were common when the first people arrived around 1000 years ago.
Kauri dieback: a disease that kill the trees.
I left my footprints on the shoe scrubber and the sprayer, not many people bothered.