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Managing infected material

Infected material poses ongoing risk of further spread as bacterial populations can rise quickly if left unmanaged. This can result in disease spread within and between orchards.

Removal
Experience has shown rapid, aggressive cutting is the best way to avoid the spread of Psa to other parts of the orchard.

Symptoms like shoot dieback, cane dieback, cankers and red/orange and white exudate, indicate Psa has moved into the vine's vascular system. If left untreated, these secondary symptoms will continue to progress and in highly-suseptible vines may lead to plant death. Additionally, leaving infected vines untreated increases the risk of infection spread to the rest of the orchard.

For orchards with psa strains identified as resistant and/or tolerant to Psa protectant sprays, infection removal is particularly important to reduce the risk of spread of these new strains to other orchards.

Where symptoms are severe or repeated infection is occurring, consideration should be given to removing individual vines and/or susceptible varieties.

KVH encourages growers to remove and dispose of infected plant material as quickly as possible.

Disposal
All kiwifruit plant material needs to be disposed of on-site and must not be transported from the property unless KVH has given approval—ph 0800 665 825 or email info@kvh.org.nz.

More information on managing infected material is included on page 7 of the Psa-V Best Practice Guide

 

Kiwifruit Vine Health

Suite 3, Level 1, Customhouse Building
314 Maunganui Road, Mount Maunganui
(entrance cnr Totara and Rata Street)
PO Box 4246, Mount Maunganui, 3149
New Zealand

Tel:  0800 665 825
Fax: 07 574 7591

Email: info@kvh.org.nz