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Psa-V

Psa-V

Psa-V Pseudomonas syringae pv. actinidiae (Psa) is a bacteria that can result in the death of kiwifruit vines. It was first discovered in New Zealand in November 2010 and rapidly caused widespread and severe impacts to New Zealand's kiwifruit industry.

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Past Psa-V resources


The kiwifruit industry has been at the forefront of biosecurity and pest management for many years. This proactiveness and future thinking continues with implementation of of the industry’s Pathway Management Plan.

With the introduction of the new Plan, the industry moved into a new phase of Psa protection and longer-term management from 1 April 2023.

Psa continues to be managed in the same way, by the industry working collectively at an orchard, regional and national level to reduce spread and impacts, and ensure best practice for day-to-day management of the pathogen on-orchard.

To ensure the very best support for growers moving forward through this new phase there are changes in some responsibilities. To be consistent with other crop protection responsibilities for pests already present in New Zealand, Zespri now coordinates support to growers to manage the impact of Psa on-orchard and updates industry resources and tools to promote Psa management best practice. View these on the Zespri Canopy website here.

As the industry's dedicated biosecurity body KVH retains all high-risk management of Psa and preparedness for any new variants.


Psa resources produced by KVH pre 1 April 2023

Below you will find several Psa resources and pieces of information and advice that were produced by KVH prior to the 2023 move into a new phase of longer term management and the introduction of the Pathway Management Plan.

If you have any questions about these resources and their past usage, please contact KVH at info@kvh.org.nz or 0800 665 825.

The Biosecurity (National Psa-V Pest Management Plan) Order 2013 commenced Friday 17 May 2013 for a 10 year term. Detailed information is available here, or you can read the KVH summary.

Read more about development of the Pathway Management Plan, which replaced the NPMP.

Psa best practice

Psa spray information

Psa protectant products

Information about the five categories of products (copper, bactericides, elicitors, biological control agents, and CPPU).

Psa cut out: orchard assessment

Psa cut out: resources for teams

Psa orchard hygiene posters

English - Maori - Hindi - Nepalese - Punjabi - Samoan - Spanish - Thai - Simplified Chinese - Tongan

A short instructional hygiene video was also produced in English and Punjabi.

Psa risk compass infographic posters

The Psa-V risk compass provided infographic-style poster presentations of key issues for consideration when developing and implementing strategies for managing Psa-V.

Male management

Male vines appear more susceptible to Psa than female vines. Choice of cultivar and careful cultural management of male vines are important in minimising productivity impacts of Psa on orchards.

Psa research and development

KVH and Zespri innovation established in early 2011 a global research and development programme that enlisted the best scientific minds globally to provide solutions. This created a toolbox for managing Psa, and our understanding of appropriate plant husbandry progressed significantly.

Between 2011 and 2023, many reports and papers were published for the kiwifruit industry on the KVH website.

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LATEST NEWS

13 Jan 2025

Welcome back

We hope you all had a merry Christmas and were able to enjoy the holiday season with family and friends. We look forward to working with you throughout the year ahead, ensuring our biosecurity system remains strong and we keep damaging exotic pests and diseases from our orchards.

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16 Jan 2025

South Auckland fruit fly controls to remain in place

Legal controls on the movement of fruit and vegetables in Papatoetoe will remain in place for the next few weeks as part of the response to the discovery of a single male Oriental fruit fly earlier this month. Sector groups, including KVH staff and industry personnel from Punchbowl and APAC, have been providing support for heightened operational activities, which are continuing a little longer as a precautionary approach. It’s anticipated the restrictions will remain in place until mid-February. This is vital to success in keeping fruit fly out of New Zealand and protecting kiwifruit growers, and horticultural exports. It also ensures we can be confident there is no breeding population – this timeframe is based on scientific advice about the life cycle of the Oriental fruit fly. To date, no other Oriental fruit flies have been found. Fruit fly traps will continue to be regularly checked, and specialist staff in the mobile field laboratory will cut up and inspect fruit and vegetables collected in the area for any signs of larvae. So far more than 200kg of produce has been examined. There is no change to the current movement rules that are in place. The A and B Zone areas in Papatoetoe will remain the same and the instructions on the disposal of produce waste remain unchanged. Significant response updates will continue to be posted on the KVH website as they occur. Useful resources Biosecurity New Zealand website for detailed response maps, information, and resources, in many languages. KVH Oriental fruit fly fact sheet. KVH Oriental fruit fly identification guide.

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14 Jan 2025

Meet the team

Next in our series of team member introductions is Linda Peacock, our Industry Liaison & Technical Specialist. We started this series to share more about the roles we have, and how each of us interact with you, our readers and growers, in our day-to-day activities. I’ve been with KVH since its earliest days in 2011, working with growers and technical teams from all growing regions to build knowledge around best practice, particularly in terms of management of Psa. I was a long-term member of the Psa Steering Group and now am part of the Technical Working Group in the crop protection and market access innovation space where Psa related projects are considered alongside the wider scope of crop protection risks. I enjoy connecting industry players with researchers, to support projects and surveys which underpin both the crop protection and biosecurity industry space. My role has expanded over time to focus more on wider biosecurity, including managing and looking into reports of unusual symptoms seen on vines and fruit, and coordinating KiwiNet members as well as regional coordinators who all help growers and KVH build biosecurity awareness and preparedness. Meeting and sharing knowledge with a wide range of great people across the industry is the best part of my job, especially on-orchard and at field days and workshops where I can help turn technical advice into practical, easy, day-to-day activities for all growers and contractors. When I’m not working, I enjoy gardening and cycling, kayaking, and walking adventures in the great outdoors.

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