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R&D News
5 September 2019
Videos from Psa research day
5 September 2019
Continuing the battle on kiwifruit vine disease Psa, Zespri’s innovation team and KVH hosted a Psa R&D update in August which saw scientists share with growers and industry insights into...
Videos from Psa research day
5 September 2019

Continuing the battle on kiwifruit vine disease Psa, Zespri’s innovation team and KVH hosted a Psa R&D update in August which saw scientists share with growers and industry insights into their research on Psa.

Growers heard from a range of speakers including Marisa Till from Plant & Food Research who outlined the latest understanding around breeding new cultivars and rootstocks for resistance. Zespri and KVH provided updates on the future focus of Psa products, including products in the pipeline and how to get the best out of Aureo Gold. The day ended with a presentation from Linda Peacock at KVH on Psa Best Practice.

Videos of each presentation are available on the Zespri Canopy website here.  

R&D News
8 August 2019
Psa research session provides important updates
8 August 2019
Although growers have learnt to live with Psa, the kiwifruit industry still feels the impact of this disease on a daily basis. Through the Zespri/KVH Innovation portfolio investments are made to...
Psa research session provides important updates
8 August 2019

Although growers have learnt to live with Psa, the kiwifruit industry still feels the impact of this disease on a daily basis. Through the Zespri/KVH Innovation portfolio investments are made to improve the tools we have in our toolbox for managing Psa.

A session this earlier this week at Baypark was designed for growers, contractors, post-harvest and merchants to profile our objectives for future Psa management, current research activities, and key research outcomes from the past year.

More than 100 people attended the science update. Growers heard from a range of speakers including Marisa Til from Plant & Food Research who outlined the latest understanding around breeding new cultivars and rootstocks for resistance.

Growers were also involved in discussions about challenges with managing Psa and on on-orchard practices such as girdling and budrot, and cut-out.

Zespri and KVH provided updates on the future focus of Psa products, including products in the pipeline and how to get the best out of Aureo Gold. The day ended with a presentation from Linda Peacock at KVH on Psa Best Practice.

Videos from the day will be available shortly and will be included in the next Bulletin.

R&D News
11 July 2019
Psa research day
11 July 2019
Although growers have learnt to live with Psa, our industry still feels the impact of this disease on a daily basis. Through the Zespri/KVH Innovation portfolio we continue to invest on industry...
Psa research day
11 July 2019

Although growers have learnt to live with Psa, our industry still feels the impact of this disease on a daily basis.

Through the Zespri/KVH Innovation portfolio we continue to invest on industry behalf to improve the tools we have in our toolbox for managing Psa.

We would like to extend an invitation to growers, contractors, post-harvest and merchants to join us for a session designed to profile our objectives for future Psa management, current research activities and key research outcomes from the past year.

Where: Trustpower Arena, Baypark, Mount Maunganui
When: Tuesday 6 August 2019, 1.00pm – 5.00pm including afternoon tea

If you would like to attend please click here to register your attendance as spaces are limited.

R&D News
13 June 2019
New research published
13 June 2019
Scientific research publications that drive KVH policies and management advice are added to our website as they are finalised. Growers are encouraged to look them up and have a browse of the many...
New research published
13 June 2019

Scientific research publications that drive KVH policies and management advice are added to our website as they are finalised. Growers are encouraged to look them up and have a browse of the many different reports we make available.

Last week the following report was added:

·         Effect of tank mixing Kocide Opti and Proclaim on Psa control: Tank mixing Kocide Opti with Proclaim did not affect Psa control. Emamectin residues were increased in the Kocide Opti plus Proclaim mix, suggesting a positive chemical interaction which increased the longevity of the emamectin residue. Copper and emamectin residues were reduced 2-4-fold with the addition of Duwett, but this was a physical effect of spray application via a hand sprayer.

R&D News
16 May 2019
New research published
16 May 2019
Scientific research publications that drive KVH policies and management advice are added to our website as they are finalised. Growers are encouraged to look them up and have a browse of the many...
New research published
16 May 2019

Scientific research publications that drive KVH policies and management advice are added to our website as they are finalised. Growers are encouraged to look them up and have a browse of the many different reports we make available.

Over recent weeks the following reports have been added:

·         Advancing EMix: The efficacy of Emix against Psa is dose dependent, withe results in this study showing that higher concentrations of Emix are required to control Psa in more complex environments.

·         Pest reviews: looking at the biology, distribution, impacts and management of Spotted Lanternfly, South American fruit fly, BMSB, Fruit piercing moth, and White Peach Scale. Reviews also provided information of potential control options for kiwifruit growers in New Zealand.

R&D News
18 April 2019
Final report - Nuffield Scholarship
18 April 2019
The final report covering KVH grower director Simon Cook’s Nuffield Scholarship research is available now. It covers the importance of on-farm biosecurity vigilance. Click here to read the...
Final report - Nuffield Scholarship
18 April 2019

The final report covering KVH grower director Simon Cook’s Nuffield Scholarship research is available now. It covers the importance of on-farm biosecurity vigilance. Click here to read the article. 

R&D News
29 November 2018
Latest Psa research now available
29 November 2018
KVH makes decisions and bases advice on key research learnings, industry knowledge and experience. The scientific research publications that drive our policies and management advice are added to...
Latest Psa research now available
29 November 2018

KVH makes decisions and bases advice on key research learnings, industry knowledge and experience.

The scientific research publications that drive our policies and management advice are added to our website as they are finalised. Growers are encouraged to look them up and have a browse of the many different reports we make available.

Recently added:

·         A paper on fruit quality attributes for Hayward and Gold3 kiwifruit treated with Aureo Gold during flowering and fruit set 2017/18. View the report here.

This trial with Aureo Gold investigated the impact the applications have on components of yield and fruit quality. The results showed that Aureo Gold did not have negative impacts on components of yield or fruit quality parameters at harvest or postharvest.

·         A paper on efficacy of Novel Elicitors on Psa. View the report here.

This trial was established to investigate the field efficacy of several promising elicitors, as identified in potted plant trials, to control Psa.

R&D News
20 September 2018
Psa research update videos
20 September 2018
Continuing the battle on kiwifruit vine disease Psa, Zespri’s innovation team and KVH hosted a Psa R&D update on 21 August 2018 which saw scientists share with growers and industry insights...
Psa research update videos
20 September 2018

Continuing the battle on kiwifruit vine disease Psa, Zespri’s innovation team and KVH hosted a Psa R&D update on 21 August 2018 which saw scientists share with growers and industry insights into their research on Psa. From the Plant and Food Research new cultivars and rootstocks programmes, through to a yeast-based biological for preventing Psa that is currently being assessed by government officials for its suitability for commercial release, it was a good opportunity for growers to hear the advances in this space.

Videos of each research update are shared on the Zespri Canopy website here.

R&D News
28 June 2018
Potted plant trial research
28 June 2018
Scientific research publications that drive KVH policies and management advice are added to our website as they are finalised. Growers are encouraged to look them up and have a browse of the many...
Potted plant trial research
28 June 2018

Scientific research publications that drive KVH policies and management advice are added to our website as they are finalised. Growers are encouraged to look them up and have a browse of the many different reports we make available.

A paper has recently been added on the efficacy of tank mixes on Psa control in Hayward and Gold3 potted plants. This research article helps us answer the question of the effect of tank mixes (two product mixes) of Psa control products with other pest and disease control products commonly applied close to flowering. None of the mixes tested significantly impacted Psa control or caused phytotoxicity. A parallel project had previously shown no reduction in the efficacy of Prodigy, Luna Privilege or Proclaim when tested with common Psa protections.

Read the research report here.

R&D News
31 May 2018
New research reports added to website
31 May 2018
One of the key lessons from the Psa response was the need to have rapid diagnostic tests available for our most significant biosecurity threats. These tests enable us to quickly confirm the...
New research reports added to website
31 May 2018

One of the key lessons from the Psa response was the need to have rapid diagnostic tests available for our most significant biosecurity threats. These tests enable us to quickly confirm the presence or absence of a particular organism if a grower reports unusual symptoms to us, and if we move into response mode determine the extent of infection.

Developing these tests for specific organisms is therefore one of our priorities for the biosecurity research portfolio. Two new reports have recently been put up on our website highlighting research outputs in this area, including:

• Evaluating RT-PCR tests for Pelargonium Zonate Spot Virus, a virus that is known to infect kiwifruit in Europe and reduce plant productivity. See the report here.

• Development of a detection assay for Brazilian Wilt (Ceratocystis fimbriata), the soil borne pathogen that has caused significant impacts to kiwifruit growers in Brazil. See the report here.

R&D News
22 February 2018
Latest Psa research now available
22 February 2018
KVH makes decisions and bases advice on key research learnings, industry knowledge and experience. The scientific research publications that drive our policies and management advice are added to...
Latest Psa research now available
22 February 2018

KVH makes decisions and bases advice on key research learnings, industry knowledge and experience.

The scientific research publications that drive our policies and management advice are added to our website as they are finalised. Growers are encouraged to look them up and have a browse of the many different reports we make available.

Recently added:

·         A paper on monitoring effectiveness of wound protectants against Psa. View the report here. 

We mentioned the paper in a January Bulletin we ran a story about new research monitoring the effectiveness of wound protectants against Psa finding that the current grower practice of spraying girdling wounds with a solution of label rate copper was sufficient to prevent infection of girdles.

The report also notes that neither copper paste nor Inocbloc paste should be applied to girdling wounds. Copper paste did not provide protection and application of Inocbloc interfered with wound healing. These products were however the most effective wound protectant on pruning cuts.

Click here to see an enlarged image from the report, showing copper paste treated girdling wounds on Actinidia chinensis var. chinesis ‘Zesy002’ (Gold3) three months after application.

·         A paper on the efficacy of Ambitious on Psa on Hayward has been added under the CPPU and elicitors categories. View the report here.

 

R&D News
22 February 2018
The successful science behind our greatest threat
22 February 2018
Award-winning research behind the kiwifruit industry’s response to Psa is a big reason for the industry’s current success. A team from Plant & Food Research, who were mobilised in...
The successful science behind our greatest threat
22 February 2018

Award-winning research behind the kiwifruit industry’s response to Psa is a big reason for the industry’s current success.

A team from Plant & Food Research, who were mobilised in late 2010 when Psa was first discovered in the Bay of Plenty, has been awarded the 2017 Prime Minister’s Science Prize for their rapid and successful response.



As we know, the arrival of Psa into New Zealand had a major impact on the kiwifruit industry and while we responded strongly with every resource we had at the time, we were not prepared to deal with such a significant incursion.

The research undertaken by the Plant & Food Research team involved an intensive screening programme of Gold3, which included hundreds of genetically-diverse varieties being evaluated to find specific cultivars that had increased tolerance and met the needs of growers, as well as consumers.

Importantly, Plant & Food Research were also the first in the world to develop diagnostics that enabled rapid testing of orchards. A range of agrichemicals were also tested that helped inform growers day-to-day orchard management plans.

Growers use science every day on their orchards as part of best practice and the ambitious standards that were implemented during the Psa response have become the norm. As an industry, we have made sure that everyone who works on or visits a kiwifruit orchard is aware of biosecurity risk and how to manage it.

The New Zealand kiwifruit industry is now considered the world leader in Psa management. We must take forward the learnings from the Psa response, especially what important scientific research like that undertaken by Plant & Food Research has told us.

Investment in science to understand the nature of significant biosecurity threats, and developing tools for their management should they arrive, is a big priority. KVH and Zespri have already invested over $16million in Psa research and innovation to understand how we can better manage the disease and this year we are spending $1million in research for other biosecurity threats. 

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Kiwifruit Vine Health

25 Miro St
Mount Maunganui
Tauranga 3116

Tel:  0800 665 825
Fax: 07 574 7591

Email: info@kvh.org.nz