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Biosecurity News
13 November 2014
Yellow Spotted Stink Bug found in South Canterbury
13 November 2014
The Ministry for Primary Industries (MPI) has initiated a biosecurity response following confirmation of a single, unmated female Yellow Spotted Stink Bug (YSSB) found last week in Temuka, South...
Yellow Spotted Stink Bug found in South Canterbury
13 November 2014

The Ministry for Primary Industries (MPI) has initiated a biosecurity response following confirmation of a single, unmated female Yellow Spotted Stink Bug (YSSB) found last week in Temuka, South Canterbury.

KVH has notified ‘KiwiNet’ – a group of industry people selected by their organisations to form the kiwifruit industry capability network for biosecurity readiness and response.

MPI are asking the South Canterbury community to help by looking out for any further YSSB bugs and to call the Exotic Pest and Disease Hotline 0800 80 99 66 to report any suspect sightings.

MPI occasionally intercept live and dead specimens of YSSB. To date, these have all been single individual bugs - not breeding populations.

MPI investigators have carried out surveillance at the property and surrounding area where the bug was found to confirm there are no more present. Nearby transitional facilities have also been inspected and no further finds have been made.

Limited information is available on the potential impacts and host range of this species. However, the host range could include several species of economic importance to New Zealand. At this stage it is unknown whether kiwifruit would be significantly impacted if the YSSB was to establish in New Zealand.

YSSB isn’t considered as potentially damaging as Brown Marmorated Stink Bug (BMSB). Unlike BMSB, YSSB is not known to be an urban nuisance pest anywhere in the world.

YSSB is typically a hitchhiker pest, which means, for example, that they could arrive here from overseas in containers or used machinery and vehicles.

This is the first biosecurity response carried out under the Government Industry Agreement on biosecurity readiness and response (GIA). Kiwifruit Vine Health (KVH) is working in partnership with MPI and Pipfruit NZ.

For more details and a description, please see the Yellow Spotted Stink Bug fact sheet here.

Grower News
13 November 2014
KeyStrepto available
13 November 2014
Key Industries (manufacturers of KeyStrepto™) have advised KeyStrepto™ is now in stock. However, growers are reminded it cannot be used on kiwifruit vines within one week of the first...
KeyStrepto available
13 November 2014

Key Industries (manufacturers of KeyStrepto™) have advised KeyStrepto™ is now in stock. However, growers are reminded it cannot be used on kiwifruit vines within one week of the first flower appearing (male or female), and can only be used in the north island.

The KeyStrepto User Guide details the conditions of use.

Those intending to spray KeyStrepto™ must complete a Site Inspection record and submit an intention to spray form no more than 72 hours before spraying.
 

Grower News
13 November 2014
Psa-V protection following hail
13 November 2014
Protection of wounds following hail is important to minimise Psa-V infection, particularly on blocks where Psa-V risk is high. With recent hail damage and the possibility of further hail bands...
Psa-V protection following hail
13 November 2014

Protection of wounds following hail is important to minimise Psa-V infection, particularly on blocks where Psa-V risk is high. With recent hail damage and the possibility of further hail bands sweeping across the country growers are reminded of their options.

  • For blocks where fruit-set has occurred summer rates of copper can be applied.  Research and experience from past years show no risk to fruitlets when copper is applied under good drying conditions. Soil applied Actigard™ may also assist.
  • For blocks that are flowering, application of copper may compromise pollination of recently opened flowers but this risk needs to be weighed up against the risk of Psa-V infection. BOTRY-Zen® is a biological product registered for use at this time and a soil-applied Actigard™ is also an option.
  • For blocks where no female flowers are open, Psa-V sprays should be applied as soon as possible and definitely before the next rain event. The addition of Actigard™ to copper sprays will improve control. Actigard™ must not be used as a foliar spray within producing blocks after the commencement of female flowering (5% flowers open).  Ambitious® may be used until seven days before the first female flower opens and KeyStrepto™ may only be applied to blocks where there are no male or female flowers open. Care must be taken to avoid drift or contamination from spray tanks onto fruiting vines.

Alternating sprayer travel up rows in alternate spray rounds will maximise coverage of hail wound sites. Do not spray blocks if bees are actively foraging.

Zespri has further information for growers with orchards affected by recent hail events, including information about insurance cover—click here to view on the Zespri Canopy.
 

Grower News
13 November 2014
KVH visits Gisborne orchards
13 November 2014
This week KVH met with Gisborne growers to see first-hand the level of Psa-V progression on positive orchards within the region. Gisborne did not suffer severe winter or spring frosts this year....
KVH visits Gisborne orchards
13 November 2014

This week KVH met with Gisborne growers to see first-hand the level of Psa-V progression on positive orchards within the region.

Gisborne did not suffer severe winter or spring frosts this year. However, spring growing conditions have been difficult with significantly higher than normal rainfall for both August (155% higher than 2013) and September (185% higher than 2013). Cooler temperatures and long periods of wet weather, particularly toward the end of September, have led to higher levels of cane die-back and leaf spot symptoms on already infected orchards.

The level of symptoms seen on Gold variety orchards was generally low. Males and vines in tougher growing conditions, such as those suffering from water-logging, had more die-back and leaf-spot. However, monitoring and cut-out rounds are continuing to minimise infection levels within the orchards. Removed material continues to be bagged and buried, or burnt.

Growers with vulnerable Gold varieties have clear plans for the removal of these blocks. With pollination now complete, the removal of the higher-risk male varieties from Hort16A blocks in their final production year is recognised as a means of reducing Psa-V risk for these orchards. Early removal also provides the opportunity for the earlier establishment of males suitable for Gold3.

Gold3 is performing well. Growers commented that signs of Psa-V are limited to a few canes with dieback, and on individual blocks some minor infection has been seen in a few M91 males. Again, male pruning provides an opportunity to remove this infection and to restructure vines to support good penetration of protective sprays for the balance of the season.

Some leaf spotting and sepal staining has appeared in the last three weeks in Hayward varieties on cold, wet sites and the impact of this is still to be seen.

The progression of bounty rootstock is being observed with interest. To date, some failed plants have been attributed to Psa-V infection. Overall however, this rootstock is showing promise in blocks with more difficult soil conditions where this new rootstock is being established.

Overall, as weather conditions start to improve, the rate of symptom progression is expected to slow across the region. However, robust protective spray programmes are still recommended to put vines in the best position as Hayward varieties move through to the higher-risk flowering period.

The Gisborne region now has 19 Psa-V positive KPINS. This represents 29% of orchards and 44% of kiwifruit hectares. Of these KPINS seven new finds were reported since 1 August 2014.
 

Protocols & Movement Controls
13 November 2014
Nursery biosecurity - best practice fact sheets available
13 November 2014
To minimise biosecurity risks across the supply chain, and to assist nurseries in meeting the Kiwifruit Plant Certification Scheme Core Standard, KVH has produced a series of factsheets on...
Nursery biosecurity - best practice fact sheets available
13 November 2014

To minimise biosecurity risks across the supply chain, and to assist nurseries in meeting the Kiwifruit Plant Certification Scheme Core Standard, KVH has produced a series of factsheets on biosecurity best practice for kiwifruit nurseries. An independent nursery expert has assisted KVH in developing these factsheets which are aligned with key components of the Core Standard.

These factsheets will be added to over time and currently include:

Grower News
13 November 2014
Revised Best Practice Orchard Hygiene confirmed on website
13 November 2014
KVH has amended its best practice guidelines for orchard hygiene to include a more practical approach in Recovery regions where infection is widespread. The revised guidelines also recognise the...
Revised Best Practice Orchard Hygiene confirmed on website
13 November 2014

KVH has amended its best practice guidelines for orchard hygiene to include a more practical approach in Recovery regions where infection is widespread.

The revised guidelines also recognise the lower risk of some vehicle movements onto orchards, such as harvest machinery, quad bikes used for maturity clearance, and fertiliser spreaders. These should be checked and have all visible plant material removed. However they no longer require sanitising between orchards in the same Recovery region. Higher-risk vehicles which come into direct contact with kiwifruit plant material (such as mulchers, root pruners etc) should continue to be cleaned and sanitised between orchards.

All vehicles should be cleaned and sanitised between Recovery regions. The requirements for Containment and Exclusion regions remain unaltered.

  • Click here to view the amended orchard hygiene best practice document.
     
Grower News
13 November 2014
Mandatory monitoring reminder
13 November 2014
Growers in all regions are required to carry out a round of mandatory monitoring in November. Growers in Exclusion and Containment regions must submit their results to KVH by 10 December using the...
Mandatory monitoring reminder
13 November 2014

Growers in all regions are required to carry out a round of mandatory monitoring in November. Growers in Exclusion and Containment regions must submit their results to KVH by 10 December using the simple online tool.

Growers in Recovery regions must record their results and file with their GAP records and are also encouraged to submit them to KVH by 10 December.

Mandatory monitoring is an important tool for the industry, as it allows KVH to report a more accurate picture of Psa-V progression around New Zealand. Additionally, early detection and intervention is the most effective method to control and minimise the impact of Psa-V.
 

Grower News
6 November 2014
Hail storm hits Nelson kiwifruit orchards
6 November 2014
A severe hailstorm has destroyed apple and kiwifruit crops in Tasman district. The hail hammered the area around Lower Moutere, Motueka and Riwaka, west of Nelson, for 20 minutes from 9.30pm Tuesday...
Hail storm hits Nelson kiwifruit orchards
6 November 2014

A severe hailstorm has destroyed apple and kiwifruit crops in Tasman district. The hail hammered the area around Lower Moutere, Motueka and Riwaka, west of Nelson, for 20 minutes from 9.30pm Tuesday night, collapsing hail nets and blanketing the ground with hailstones.

  • Click here for the full article in the Nelson Mail.

There are also reports of hail events in other growing regions, including the Bay of Plenty today.

All growers with orchards affected by hail are advised to apply a Psa-V copper protective spray. Wounds created by the hail create an entry point for Psa-V.

Those lodging a claim must contact the Zespri contact centre as soon as possible after the event (it needs to be done within 72 hours), and don’t cut or thin the orchard until the assessor has been out and you know the status of your orchard.

  • Click here for more hail advice on the Zespri Canopy.
Grower News
6 November 2014
Identifying male cultivars during flowering
6 November 2014
Males are difficult to identify and the flowering period provides the best opportunity to distinguish between cultivars. Male cultivars vary in susceptibility to Psa-V. Therefore, the ability to...
Identifying male cultivars during flowering
6 November 2014

Males are difficult to identify and the flowering period provides the best opportunity to distinguish between cultivars. Male cultivars vary in susceptibility to Psa-V. Therefore, the ability to identify different male varieties can assist Psa-V management activities.

Diseased males can impact future pollination requirements. More-tolerant male varieties are more likely to provide an ongoing source of pollen within the orchard.

To help growers identify between males, KVH has developed a simple guide including photos, descriptions and leaf characteristics of each variety.

  • Click here to view the KVH Male Cultivar Identification Guide on the KVH website
  • Click here to view a KVH information sheet about male susceptibility to Psa-V

Also, growers wanting to test their males to confirm identify are can contact Tree Lab in Rotorua who process male samples and send them offshore for DNA analysis.

Grower News
6 November 2014
Symptoms not always what they seem
6 November 2014
Three recent reports of symptoms appearing to be Psa-V (red exudate) have received ‘Not Detected’ results following testing. The samples from three different varieties in three different...
Symptoms not always what they seem
6 November 2014

Three recent reports of symptoms appearing to be Psa-V (red exudate) have received ‘Not Detected’ results following testing.

The samples from three different varieties in three different regions have been sent to MPI for further analysis. Testing is in progress. While no other strains of Psa have been identified so far, a fungi commonly associated with wounding has been identified on one sample.

We know wounds are a pathway for Psa-V to enter, and this could also be the case for other diseases. Therefore growers are advised to remain vigilant with monitoring and applying protectant sprays and to continue to protect vines by sealing any wounds.
 

Grower News
6 November 2014
NZKGI forum members unanimously support KVH AGM resolutions
6 November 2014
KVH Chairman Peter Ombler, Chief Executive Barry O’Neil and Director Mike Chapman presented KVH’s proposed resolutions, including the levies and financials, to the NZKGI Forum members...
NZKGI forum members unanimously support KVH AGM resolutions
6 November 2014

KVH Chairman Peter Ombler, Chief Executive Barry O’Neil and Director Mike Chapman presented KVH’s proposed resolutions, including the levies and financials, to the NZKGI Forum members yesterday and received unanimous support.

Peter also thanked Mike Chapman and Paul Jones for their contribution and service to the KVH Board. Mike Chapman will continue on as KVH Board Secretary.

The KVH AGM is scheduled for 26 November 2014 starting at 2pm in Classic Flyers, Jean Batten Drive, Mount Maunganui.  AGM papers and proposed resolutions have been sent to KVH members and are now available on the KVH website here.

All growers and industry participants are encouraged to attend the AGM. Please RSVP to info@kvh.org.nz.

Company Notices
6 November 2014
Zespri FON Field Days - time to sort those males
6 November 2014
Zespri is holding a round of field days in November. A number of pruning specialists will be in attendance to discuss male management, and in particular, how to undertake the post-flowering prune...
Zespri FON Field Days - time to sort those males
6 November 2014

Zespri is holding a round of field days in November. A number of pruning specialists will be in attendance to discuss male management, and in particular, how to undertake the post-flowering prune while minimising Psa-V infection risk. Latest research findings on this topic will be discussed.

Zespri strongly encourages all pruning contractors and key staff to attend these field days and participate in the discussion. These will be held late in the day so as not to disrupt the working day. The field day will conclude with a BBQ.

Click here for the full schedule.

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