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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.

Grower News
9 October 2014
Reducing bud-rot effects in Hayward and Green14 orchards
9 October 2014
During bud-rot trials in Hayward and Green14 orchards last year, Actigard™ and copper spray programmes had the biggest impact in reducing Psa-V leaf spot. Applications of KeyStrepto™ also...
Reducing bud-rot effects in Hayward and Green14 orchards
9 October 2014

During bud-rot trials in Hayward and Green14 orchards last year, Actigard™ and copper spray programmes had the biggest impact in reducing Psa-V leaf spot. Applications of KeyStrepto™ also reduced leaf spot.

As Psa-V is associated with bud-rot, a protective programme that includes these products is highly recommended for all sites vulnerable to bud-rot. This will minimise leaf spot, which once established, can provide ongoing sources of inoculum.

Girdling provided the best bud-rot control. Recommended timing for girdling is 16-30 days pre-flowering. Further trials will run this year to better understand optimal girdle timing.

Growers intending to apply a pre-flower girdle should plan for this now. All growers are urged to measure impacts of this treatment on their site and share this information with the industry to build knowledge quickly about the value of this tool. 

By leaving some control vines amongst girdled areas or alternatively, girdling only a few vines within high-risk blocks and measuring flower-to-fruit retention, assessment of the success of this tool across multiple sites can be gained. A methodology to assist growers has been developed by the Zespri OPC team – click here.

R&D News
9 October 2014
New R&D report on KVH website
9 October 2014
Exploring options for wound protection to prevent Psa-V infection of cut stems Bruno seedlings Wound protection continues to be a challenge for kiwifruit growers since the incursion of a virulent...
New R&D report on KVH website
9 October 2014

Exploring options for wound protection to prevent Psa-V infection of cut stems Bruno seedlings

Wound protection continues to be a challenge for kiwifruit growers since the incursion of a virulent strain of Pseudomonas syringae pv. actinidiae (Psa) in New Zealand in November 2010. When several products were tested in the field as wound protectants against natural infection by Psa, there were no significant differences between treatments (Miller et al. 2012). Therefore, there is demand in the kiwifruit sector for a wound protectant suitable for pruning wounds. This project evaluates a range of registered treatments not previously tested for protecting pruning wounds against Psa and explores the use of a penetrant for driving the product into the wound to provide protection in the case of bacteria entering the plant during the cutting process.

Click here for report by Plant & Food Research

Grower News
2 October 2014
R&D grower meeting - presentations available on KVH website
2 October 2014
The following presentations from Tuesday’s R&D grower meeting in Te Puke are now available on the KVH website:   Psa-V Spring Update—Barry O’Neil, KVH Leaf...
R&D grower meeting - presentations available on KVH website
2 October 2014
Grower News
2 October 2014
Kerikeri Update
2 October 2014
Psa-V continues to spread throughout the Kerikeri region with 32 out of 106 KPINS now testing Psa-V positive. KVH staff recently visited positive orchards in Kerikeri with growers and orchard...
Kerikeri Update
2 October 2014

Psa-V continues to spread throughout the Kerikeri region with 32 out of 106 KPINS now testing Psa-V positive. KVH staff recently visited positive orchards in Kerikeri with growers and orchard management staff.

In most cases disease expression has continued to be relatively slow. However, in one location inoculum levels have clearly increased and disease expression in Hort16A has increased significantly. This has led to a number of part blocks being removed. These orchards are carrying out weekly monitoring and removal of infected material, followed by weekly spraying.

Growers are advised to be aggressive with removal to help reduce the rate of spread and to protect young Gold3 grafts. The continued wet weather has clearly been a factor in disease spread, and unless the region sees a long period of warm, dry weather soon, growers can expect expression to continue to accelerate.

KVH recommends growers actively monitor their orchards, remove signs of infection and to contact packhouses or KVH staff for support if required.
 

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