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Grower News
4 May 2017
Border information straight to your inbox
4 May 2017
The Ministry for Primary Industries (MPI) regularly releases an update about what the Ministry and partners like KVH are doing together to keep New Zealand’s borders secure from pests and...
Border information straight to your inbox
4 May 2017
The Ministry for Primary Industries (MPI) regularly releases an update about what the Ministry and partners like KVH are doing together to keep New Zealand’s borders secure from pests and diseases.
 
You can subscribe to ‘The Border Space’ newsletter here to receive future issues. Regular features include updates on surveillance and detection of unwanted pests, information about new biosecurity rules, initiatives being developed and trialled, and border activity statistics.
 
The latest issue also includes a profile on KVH and port company-led activities at the Port of Tauranga to create a model of biosecurity operational excellence. We’re doing a lot of work in this area with the wider Port community (transport and logistics personnel and transitional facility staff for example), alongside our colleagues at the Port and MPI, to raise awareness and understanding of biosecurity risk at the frontline.
 
Grower News
4 May 2017
Do not pick fruit after spraying with Actigard
4 May 2017
Fruit left in the canopy after harvest should not be picked for home use or sale if a post-harvest Actigard spray has been applied.    Syngenta advises that after spraying, fruit residues...
Do not pick fruit after spraying with Actigard
4 May 2017
Fruit left in the canopy after harvest should not be picked for home use or sale if a post-harvest Actigard spray has been applied. 
 
Syngenta advises that after spraying, fruit residues will exceed the local Maximum Residue Level (MRL) for Acibenzolar-S-Methyl (set at 0.02ppm). All domestically-produced food and food imports sold in New Zealand must comply with these Food Safety rules.  While the residue from the spray is unlikely to have any serious health impacts but it is important that product registration guidelines are always met.
 
A viable alternative is to get in quick before the sprayer or source reject fruit from post-harvest suppliers.
R&D News
4 May 2017
Latest Psa research available
4 May 2017
KVH is an organisation basing its advice and decisions on industry knowledge, research and experience.   The scientific research publications that drive our policy and management advice are...
Latest Psa research available
4 May 2017
KVH is an organisation basing its advice and decisions on industry knowledge, research and experience.
 
The scientific research publications that drive our policy and management advice are added to our website – do look them up and have a browse of the many different reports we make available.
 
Recently added under the resistance and copper categories are papers on the evolution of copper resistance in Psa, and analysis of Psa from 80 genomes to strengthen understanding of the diseases evolution.
 
Grower News
4 May 2017
Keeping imported kiwifruit pest free
4 May 2017
Readers of the KVH Bulletin may recall that over the past few years, KVH has been advocating for tighter controls on the import of Italian kiwifruit to reduce the risk of White Peach Scale (WPS)...
Keeping imported kiwifruit pest free
4 May 2017
Readers of the KVH Bulletin may recall that over the past few years, KVH has been advocating for tighter controls on the import of Italian kiwifruit to reduce the risk of White Peach Scale (WPS) entering our borders. We have also been working with kiwifruit importers to ensure they are aware of this threat and measures they can take post-border to reduce risk.
 
While these discussions have not resulted in changes to the Import Health Standard, we are pleased to report that interceptions of WPS have declined significantly over the past season despite a similar level of infestation reported offshore. This is a great result and reflects measures that both the Ministry for Primary Industries (MPI) and importers have taken in dealing with Italian counterparts to ensure fruit arriving in New Zealand is free of unwanted organisms. 
 
This season there were almost 900,000 kilos of kiwifruit was imported in 31 consignments, which were all inspected by MPI at the border. Only two of these consignments were found to have WPS, and were fumigated to remove biosecurity risk. This compares to 18 out of 46 consignments – or 39% - last year. 
 
KVH and Zespri are also funding research being conducted in Italy to better understand cold tolerance of WPS and the ability of these organisms to reproduce following long periods of cold storage. This research is ongoing and the outcomes will support further actions to reduce risk. 
 
WPS is regularly intercepted by MPI at our borders. This pest has caused considerable damage to Italian kiwifruit orchards with production losses of up to 20% in some years. WPS infects bark, fruit and leaves of plants. In severe cases it appears as white, cottony masses encrusting the bark of the tree. Trees which are heavily infested can become stunted and young plants can die very quickly after infestation. Read the KVH factsheet to learn more about identifying and controlling WPS.
 
Grower News
4 May 2017
Learning more about Psa across the world
4 May 2017
Early last week KVH and NZKGI hosted a group of growers from Spain and Portugal to learn more about the challenges and experiences of growing kiwifruit in other regions.   KVH presented to the...
Learning more about Psa across the world
4 May 2017
Early last week KVH and NZKGI hosted a group of growers from Spain and Portugal to learn more about the challenges and experiences of growing kiwifruit in other regions.
 
KVH presented to the group on Monday and shared information about Psa in New Zealand, including our history with the disease and control efforts that are now in place. Most of the group are Hayward growers and were thankful for the interesting information shared with them that they can apply in their own local areas.
 
The growers shared with KVH that in several orchards in the coldest areas of Galicia (in the north west of Spain and the main production area of the country) and northern Portugal, where during January temperatures were as low as -7 degrees, large symptoms on trunks and leaders were recorded before budburst in February and early March. 
 
Unlike previous years, symptoms appeared more frequently in female plants. 
 
In the more temperate zones however there were practically no symptoms. 
 
There was a good number of cooler hours last winter, especially in December and January, with extreme temperatures and low rainfall.  Shoot dieback and cane collapse have been detected in some plants.
 
Both regions are currently in pre-flowering (flowering in Hayward will occur in about a fortnight from now) and they are seeing spots on leaves and early signs of sepal staining on buds. The weather has been dry over spring and as a result symptoms have not yet been serious. Rainfall was expected late last week, which is likely to lead to an increase in symptoms.
 
KVH will remain in contact with the group to ensure we keep up-to-date with seasonal changes to Psa. 
 
Biosecurity News
4 May 2017
Being prepared for BMSB
4 May 2017
Staff from KVH, Zespri, Horticulture NZ, NZKGI and the Ministry for Primary Industries (MPI) spent Tuesday afternoon taking part in a workshop dedicated to Brown Marmorated Stink Bug (BMSB) readiness...
Being prepared for BMSB
4 May 2017
Staff from KVH, Zespri, Horticulture NZ, NZKGI and the Ministry for Primary Industries (MPI) spent Tuesday afternoon taking part in a workshop dedicated to Brown Marmorated Stink Bug (BMSB) readiness planning.
 
The teams focused on case studies of possible BMSB finds, key considerations and questions that we’ll need to work through in the event of an incursion (possible movement restrictions and control approached for example), how information will be distributed to growers, and how we can make sure everything we do is well coordinated with other sectors and MPI.
 
Workshops like these take place regularly and are an integral part of the response and readiness plans KVH – along with industry partners – prepare and test to ensure we’re able to respond to an incursion quickly, efficiently, and with as minor impact as possible on growers and the kiwifruit industry.
 
Biosecurity News
4 May 2017
Stink bugs found in Chile
4 May 2017
Officials at the Ministry for Primary Industries (MPI) are working with peers at the Agricultural and Livestock Service (Servicio Agricola y Ganadero, SAG) in Chile following a recent Brown...
Stink bugs found in Chile
4 May 2017
Officials at the Ministry for Primary Industries (MPI) are working with peers at the Agricultural and Livestock Service (Servicio Agricola y Ganadero, SAG) in Chile following a recent Brown Marmorated Stink Bug (BMSB) detection.

The bugs were found in three homes in a small urban area of Santiago and because they were found at various life stages an established population is assumed.
 
The detection is of concern because it is the first southern hemisphere detection and increases the risk to New Zealand, as our seasons are compatible and BMSB could arrive year-round.
 
MPI is planning a trip to Chile to learn more about the initial stages of population establishment, and to provide help and advice to officials in Chile based on New Zealand’s readiness programme.
 
A report about the detection has been published in a free scientific e-journal that publishes papers, reviews and comments on entomology. A copy is also available from the KVH website.
Grower News
4 May 2017
Nursery joins KPCS
4 May 2017
KVH is pleased to announce another nursery has joined the Kiwifruit Plant Certification Scheme this week (KPCS).   Te Mahuri Nursery in Te Puke has met the requirements to sell KPCS...
Nursery joins KPCS
4 May 2017
KVH is pleased to announce another nursery has joined the Kiwifruit Plant Certification Scheme this week (KPCS).
 
Te Mahuri Nursery in Te Puke has met the requirements to sell KPCS “within region” certified plants to growers in the Te Puke region.
 
Growers are reminded that KVH movement controls must be observed when ordering kiwifruit plants form nurseries.
 
For a list of nurseries and their KPCS status, and to find out more about requirements of the KPCS, click here.
 
Biosecurity News
4 May 2017
BMSB at our borders
4 May 2017
Incorporating latest data from the Ministry for Primary Industries (MPI) we’ve released our latest Brown Marmorated Stink Bug (BMSB) risk update to provide you with the most up-to-date...
BMSB at our borders
4 May 2017
Incorporating latest data from the Ministry for Primary Industries (MPI) we’ve released our latest Brown Marmorated Stink Bug (BMSB) risk update to provide you with the most up-to-date information about activities underway to prevent BMSB from arriving in New Zealand and plans should it get here.
 
The update also includes data from the last reporting period (since 20 March 2017) and a summary of what has been found, where, over the high-risk period.
 
R&D News
4 May 2017
Actigard trial results
4 May 2017
Last year field trials were conducted on Gold 3 vines to determine whether the application of Actigard, at recommended application rates, post-harvest could impact components of yield in the...
Actigard trial results
4 May 2017
Last year field trials were conducted on Gold 3 vines to determine whether the application of Actigard, at recommended application rates, post-harvest could impact components of yield in the following season. 

Winter bud numbers; flower numbers and type; and fruit size and shape were measured to identify potential impacts.
 
Trials also included application of Actigard at rates up to double label recommendation, and at a two-week interval between repeat applications, which is seven days short of the 21-day interval recommended on the product label.
 
Results showed a negligible impact on components of yield in the following season when Actigard was applied at the recommended rate immediately post-harvest and when reapplied to leaves of good photosynthetic capacity pre-leaf fall.
 
In three of the four trial sites there appeared to be a slight trend for a small reduction in the number of side flowers per cane following Actigard treatment. 
 
Full details of the trial will be available on the KVH website shortly but in summary the results support recommendations outlined by Syngenta for autumn application of Actigard. These are as follows:
  • Apply 200 g/ha of Actigard (plus copper) immediately post-harvest as a foliar spray. Ensure thorough coverage of canopy and leaf stalks.
  • If canopy condition allows (ie leaves are still green) and infection risk remains high, reapply Actigard 21 days later to extend protection into the leaf-fall period.
  • Do not apply Actigard to vines that are stressed due to drought, excessive moisture, cold weather or disease.
  • Avoid risk of spray drift to unharvested fruit and clean sprayers thoroughly.
 
Grower News
20 April 2017
Bad weather in Italy leads to increase in Psa symptoms
20 April 2017
In the last Bulletin we talked about the need to increase Psa protective sprays in line with the seasonal weather changes. This has become even more pertinent following the bad, wet and windy...
Bad weather in Italy leads to increase in Psa symptoms
20 April 2017

In the last Bulletin we talked about the need to increase Psa protective sprays in line with the seasonal weather changes.

This has become even more pertinent following the bad, wet and windy weather we’ve recently had and news out of Northern Italy that Psa infection in Italy this spring is higher than previous years.

After a very wet autumn, the Italians have had a relatively mild winter and dry spring. It’s thought that the extensive rain last autumn has led to the outbreak they’re seeing now which is affecting Hayward in particular. Verona, Piedmont and Emilia Romagna are also heavily infected with significant secondary symptoms. 

There’s a strong chance we could see the same symptoms here in New Zealand next spring if growers don’t take the right action now.  To help protect their orchards, growers need to:

• apply a copper spray following the recent wet windy weather (ensure a suitable time window before harvest) to protect new wounds and rebuild protective cover across vines as soon as possible,
• ensure a copper Actigard spray is applied immediately after harvest to help prevent Psa entering vines through harvest wounds and leaf scars,
• look at a winter copper programme of five full rate copper sprays between harvest and bud break. Consider both weather and orchard activities when planning these sprays.

Post-harvest, Actigard can be tank mixed with copper and is most effective when applied to leaves that are still in good condition. It should not be applied to vines that have been waterlogged for an extended period. Vines should be given four to five days to recover from the recent heavy downpours before application.

For more information, refer to KVH's Psa-V Best Practice Guide.

Any growers concerned they may not be achieving the expected levels of Psa control from copper applications at label rates should contact KVH on 0800 665 825 or email info@kvh.org.nz.

Biosecurity News
20 April 2017
What can fruit flies smell?
20 April 2017
Sterile Queensland fruit flies are being imported over the next few months for use in a research project to identify new attractants that may have the potential to improve surveillance and...
What can fruit flies smell?
20 April 2017

Sterile Queensland fruit flies are being imported over the next few months for use in a research project to identify new attractants that may have the potential to improve surveillance and response for this unwanted pest.

As part of a long-term project to learn more about odour attractants, the flies are being used within a containment facility at Plant and Food Research to identify firstly any odours that flies can smell, and secondly, any behavioural activity they then demonstrate – such as flight towards odours. This work will allow scientists to then identify which compounds have the most potential to improve current surveillance and response systems.

Over 50 odours have so far been identified that female and / or male flies can detect and combinations of these will be trialled to determine flies response to any of these, or combinations of these, better than the existing attractants.

Read more about the ongoing research project in the Fruit Fly section of the KVH website.

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