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Grower News
16 October 2014
Prunetec wound protectant - test results
16 October 2014
In a recent in-vitro study wound protectant Prunetec demonstrated absolute kill of Psa-V within an hour of incubation. Minimum inhibitory concentration, kill rate versus time and repeatability were...
Prunetec wound protectant - test results
16 October 2014

In a recent in-vitro study wound protectant Prunetec demonstrated absolute kill of Psa-V within an hour of incubation. Minimum inhibitory concentration, kill rate versus time and repeatability were tested by Verified Lab Services (VLS). VLS has previously conducted in vitro testing of other wound protectants commonly used in the industry.

Prunetec is listed in the Zespri Crop Protection Standard and is suitable for covering pruning wounds and for use when grafting.

  • Click here for Prunetec test results
  • Click here for VLS report on wound protectants previously tested
Grower News
16 October 2014
Monitoring confirms Whangarei Exclusion status
16 October 2014
In early October, KVH staff completed a round of monitoring on six Whangarei orchards to confirm the region’s ‘Exclusion’ status.  The orchards were chosen to represent the...
Monitoring confirms Whangarei Exclusion status
16 October 2014

In early October, KVH staff completed a round of monitoring on six Whangarei orchards to confirm the region’s ‘Exclusion’ status. 

The orchards were chosen to represent the region with the focus on Hort16A plantings due to their higher susceptibility to Psa-V.

Samples taken from two CK3 males showing Psa-V like symptoms on one orchard were tested and confirmed ‘Not Detected’. There were no other visible signs of Psa-V symptoms on the other orchards.

A review of the 2014 season spray diaries showed four of the six orchards had good protective spray programmes in place and all orchards had good hygiene protocols in place. The growers had plans to convert their Hort16A blocks to less susceptible varieties; and some had begun this process by stump or notch grafting some of their Hort16A blocks to Gold3.

Due to Whangarei’s close proximity to Kerikeri (a containment region where Psa-V has spread this season) it’s essential Whangarei growers remain proactive with their protective spray programmes and hygiene practices to continue to keep Psa-V out of their region.

A report of the Whangarei monitoring will be available on the KVH website shortly.

Grower News
16 October 2014
French Psa-V update
16 October 2014
France is one of the largest kiwifruit production countries in Europe, and like most kiwifruit production regions is infected with the global outbreak strain of Psa-V (r Biovar 3). As at autumn...
French Psa-V update
16 October 2014

France is one of the largest kiwifruit production countries in Europe, and like most kiwifruit production regions is infected with the global outbreak strain of Psa-V (r Biovar 3).

As at autumn 2013, France had about 4400 hectares planted in the following cultivars:

  • 4020 ha Hayward
  • 165 ha Summerkiwi
  • 20 ha other green varieties
  • 25 ha Hort16A
  • 70 ha Gold3
  • 40 ha other gold varieties
  • 35 ha Arguta

Estimates of total Psa-V infection rates are difficult to obtain. The French Ministry of Agriculture provides official data at the annual Psa meeting each February for the previous year.  Therefore, 2013 data is the latest official data available.

In 2013, 2344 hectares of kiwifruit were officially inspected for Psa with 123 samples returning positive results (out of 400 taken from orchards with symptoms). This represents 386 canopy hectares or 8.9 percent of the total industry.

However reports based on visual inspections since 2011 suggest the cumulated infection rate is much higher—around 50 percent.  Since 2011, four percent of the orchards have been cut back or removed.

Data from 2014 survey will be released in February 2015 and KVH will report these when they become available.
 

Biosecurity News
16 October 2014
KVH participates in MPI fruit fly working group
16 October 2014
MPI have established a working group to improve and clarify the requirements for managing the risk of fruit fly entering through the commercial fresh produce pathway. Although the commercial...
KVH participates in MPI fruit fly working group
16 October 2014

MPI have established a working group to improve and clarify the requirements for managing the risk of fruit fly entering through the commercial fresh produce pathway.

Although the commercial produce pathway is considered to be well managed and relatively low risk, MPI has identified several pieces of work necessary to maintain a high level of biosecurity risk management.

The group will review work being undertaken and communicate progress back to respective industries on an on-going basis. KVH is participating in this group along with representatives from other New Zealand horticultural industries.

Biosecurity News
10 October 2014
Brown marmorated stink bug - a potential risk to New Zealand
10 October 2014
Preparing for emerging pests and diseases that could affect New Zealand’s environment and economy is a key role for the Ministry for Primary Industries (MPI). The Ministry has been keeping...
Brown marmorated stink bug - a potential risk to New Zealand
10 October 2014

Preparing for emerging pests and diseases that could affect New Zealand’s environment and economy is a key role for the Ministry for Primary Industries (MPI).

The Ministry has been keeping an eye on the brown marmorated stink bug (Halyomorpha halys or BMSB) for a number of years now and has stepped up its efforts to keep this pest out of New Zealand - or detect it early should it get here. This is in response to the insect emerging as a serious horticultural pest in the United States.

BMSB is native to Asia and has aggressively invaded the United States and has now been found in Canada, Switzerland, Germany, Italy and France.  At present it is regarded by the New Zealand horticulture industry as one of the top six pests of concern.

Good phytosanitary measures are the best way to prevent introductions, and early detection through surveillance is the key to eradication before the pest can become established.

MPI is trialling 50 traps in high-risk areas to determine the feasibility of integrating pheromone lures for BMSB into its existing trapping programmes. Border and transitional facilities have also been put on alert for BMSB.
 
BMSB has not been detected in New Zealand – to report any suspect sightings phone MPI on 0800 80 99 66 or KVH on 0800 665 825. If you’ve been overseas or received parcels/shipments from overseas, check your luggage or parcels indoors for insects.

Grower News
9 October 2014
KeyStrepto - intention to spray
9 October 2014
As of 1 October growers must register their intent to spray KeyStrepto™ through an online form available on the Zespri Canopy or KVH website. Click here to access the online form. After...
KeyStrepto - intention to spray
9 October 2014

As of 1 October growers must register their intent to spray KeyStrepto™ through an online form available on the Zespri Canopy or KVH website. Click here to access the online form. After registering your intention to spray, application must occur within three days.

Orchards may be subject to random audits; and strict conditions apply to the use of KeyStrepto™. All requirements must be followed, including the completion of a Site Inspection Record, and compliance with the KeyStrepto™ User Guide.

Click here for more information about KeyStrepto™ and its use conditions.

Biosecurity News
9 October 2014
Fruit fly in South Australian oranges
9 October 2014
The Ministry for Primary Industries (MPI) has received laboratory results confirming insect larvae found in two separate consignments of citrus fruit (mandarins and oranges) from South Australia are...
Fruit fly in South Australian oranges
9 October 2014

The Ministry for Primary Industries (MPI) has received laboratory results confirming insect larvae found in two separate consignments of citrus fruit (mandarins and oranges) from South Australia are NOT economically-significant fruit flies.

The fruit consignments were intercepted at the border last week as part of routine border inspection processes. They were found to contain suspected fruit fly larvae.

The insect larvae found in the consignments were the Island Fruit Fly (Dirioxa pornia) which is not regarded as economically significant as it predominantly affects damaged fallen fruit, and primarily not fruit for sale.

The consignments were from areas designated as pest-free for economically significant fruit flies in South Australia and imported to Auckland and Christchurch.

MPI immediately put a hold on fruit imported from Australia while it waited on laboratory identification to determine if the insects present were harmful species of fruit fly. This fruit was not to be distributed for sale.

None of the fruit from the consignments in question left containment until the larvae was identified and the fruit treated. 

Interceptions at the border such as this incident are not infrequent and demonstrate the border system at work.

KVH was pleased to be notified quickly of the incident and supports the actions taken by MPI.

Grower News
9 October 2014
KeyStrepto use - getting it right
9 October 2014
This season’s rules for KeyStrepto™ use are different to previous seasons. However, as in previous seasons, the key focus continues to be ensuring open flowers in the orchard (e.g. sward,...
KeyStrepto use - getting it right
9 October 2014

This season’s rules for KeyStrepto™ use are different to previous seasons. However, as in previous seasons, the key focus continues to be ensuring open flowers in the orchard (e.g. sward, shelter, and canopy) are minimised and neighbours must be notified before use.

From 1 October, all growers must register their ‘Intent to Spray’ via the Canopy or KVH websites. Growers may be selected for random audit to ensure they are adhering to the rules set by the ACVM. Audits are conducted in a similar manner to the KVH audits of previous years and will target the same areas of concern. Failure to meet the ACVM conditions of use can have significant impact on:

  • Bees—the bee industry has significant concerns about possible residues in honey products and may reconsider their ongoing role in pollinating kiwifruit.
  • Kiwifruit industry—misuse may result in resistance developing or residues in kiwifruit at the time of harvest resulting in the likely destruction of crop under instruction from MPI.

Orchards which fail the audit are subject to automatic future audits and the normal penalties imposed under GLOBALG.A.P and the Zespri Crop Protection Standard. These penalties can include:

  • Non-compliance being recorded against the Management System Owner (MSO) of the KPIN
  • Financial penalties being imposed of up to 40 cents/tray
  • Suspension/cancellation of GLOBALG.A.P certification – possibly resulting in the inability of supplying fruit for export.

Maintaining a responsible attitude towards KeyStrepto™ use will ensure continuing use of this tool while making sure risks to all industry stakeholders are mitigated.

  1. Read the KeyStrepto™ User Guide
  2. Register your intent to spray through the online form here. Note – this form has been improved to allow the selection of all varieties to be sprayed on the same date.
  3. Complete and retain a Site Inspection Record

If you have any queries, please contact Zespri Crop Protection Development Manager, Gordon Skipage on 07 572 7633 or by email.

Grower News
9 October 2014
Recommended actions following high risk weather
9 October 2014
Strong winds over the last week have created high levels of wounding, particularly in more developed canopies. Combined with long periods of leaf wetness, the high-risk conditions for Psa-V also...
Recommended actions following high risk weather
9 October 2014

Strong winds over the last week have created high levels of wounding, particularly in more developed canopies. Combined with long periods of leaf wetness, the high-risk conditions for Psa-V also increase.

Recommendations are to apply additional protective copper cover to ensure wounds and expanding leaf surfaces are protected. Applications of KeyStrepto™ should also be considered in high-risk situations, including orchards which have suffered hail damage or where cankers are being actively managed.

Foliar applications of Actigard™ are also recommended once the majority of leaves within the canopy have reached 25mm. This provides an additional systemic mode of protection helping to reduce infection levels and protect against leaf spot.

Additional applications of Actigard™ can be made at 21 day intervals. Avoid applications in marginal areas where vines are stressed due to water-logging or other factors such as root diseases.

In regions where varieties are approaching flowering, foliar applications of Actigard™ can help provide protection through the flowering period. However, care must be taken to avoid applying once flowers begin to open.

Actigard™ can be tank mixed with commonly used coppers, and with KeyStrepto™ and DuWett. A three way mix of copper, Actigard™ and KeyStrepto™ is not recommended as some precipitation of product may be observed. Actigard™ may be tank mixed with pre-flowering Movento, Luna Privilege or Prodigy sprays.


 

Company Notices
9 October 2014
Wanganui grower meeting
9 October 2014
When:     Tuesday 21 October at 1pm Where:     Quality Inn Collegiate, Wanganui, Agenda includes an update on Psa-V status in the Wanganui region, best...
Wanganui grower meeting
9 October 2014
  • When:     Tuesday 21 October at 1pm
  • Where:     Quality Inn Collegiate, Wanganui,

Agenda includes an update on Psa-V status in the Wanganui region, best practise tips for spring and managing bud-rot in Hayward.

All growers welcome.

Grower News
9 October 2014
Observation report - Psa-V affected male vines in Tauranga
9 October 2014
A further observation report on infected male vines shows how the effects of a colder site, Psa-V infection history, lower input Psa-V strategies (cultural management and protective spray programmes)...
Observation report - Psa-V affected male vines in Tauranga
9 October 2014

A further observation report on infected male vines shows how the effects of a colder site, Psa-V infection history, lower input Psa-V strategies (cultural management and protective spray programmes) and less-tolerant varieties can result in very compromised pollination potential.

Ongoing Psa-V management is necessary on all orchards and more challenging spring conditions clearly illustrate the re-emergence of Psa-V on vulnerable sites.

Monitoring and removal of infected material through spring remains a primary tool in reducing risk of Psa-V inoculum building and compromising orchard productivity.

Click here for the observation report.

Company Notices
9 October 2014
KVH AGM - Notice of Meeting
9 October 2014
KVH will hold its Annual General Meeting (AGM) at 2pm on Wednesday 26 November 2014 at Classic Flyers (Boeing Room), 9 Jean Batten Drive, Mount Maunganui—Google...
KVH AGM - Notice of Meeting
9 October 2014

KVH will hold its Annual General Meeting (AGM) at 2pm on Wednesday 26 November 2014 at Classic Flyers (Boeing Room), 9 Jean Batten Drive, Mount Maunganui—Google maps.

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