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Grower News
21 April 2016
Protecting orchards after harvest
21 April 2016
Immediately following harvest, growers should be getting copper spray programmes underway to help prevent Psa entering their vines through harvest wounds and leaf scars. Incorporation of Actigard...
Protecting orchards after harvest
21 April 2016

Immediately following harvest, growers should be getting copper spray programmes underway to help prevent Psa entering their vines through harvest wounds and leaf scars.

Incorporation of Actigard into a post-harvest programme will reduce the likelihood of disease symptoms appearing the following spring. Actigard can be tank mixed with copper and is most effective when applied to leaves that are still in good condition. Extreme care must be taken to avoid spray drift onto unharvested blocks.

Following the discovery of copper-tolerant and streptomycin-resistant Psa developing on some orchards, a robust spray programme and cutting out infected material is particulary important through autumn and winter to reduce the spread of these new Psa strains.

Best practice advice for post-harvest protection and managing tolerance and resistance:

  • Starting after harvest, maintain a comprehensive copper programme through autum and winter including a minimum of five copper applications at full winter rates.
  • Ensure water rates are sufficient for complete canopy coverage. The addition of spreaders will improve coverage.
  • As autumn progresses, maintain copper cover to protect fresh leaf scars. This is particularly important following the use of leaf drop sprays.
  • Carry out good tool hygiene between vines during winter pruning and remove infected material from orchards.
  • Apply coppers prior and post winter pruning.

Autumn and winter are high-risk periods for Psa-V. While vines are dormant the disease can still be active and enter through pruning wounds, new grafts and frost-damaged tissue.

For more information, refer to KVH’s Psa-V Best Practice Guide at www.kvh.org.nz/seasonal_advice.

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.

Grower News
21 April 2016
Protect young plants through autumn
21 April 2016
Young plants, or vines newly grafted this season should be protected through the autumn period—particularly those located in frost-prone sites or close to Psa-V affected locations. New leaf...
Protect young plants through autumn
21 April 2016

Young plants, or vines newly grafted this season should be protected through the autumn period—particularly those located in frost-prone sites or close to Psa-V affected locations.

New leaf spot symptoms are being seen on a number of sites indicating a lift in Psa-V activity as we begin to experience colder wetter weather periods.

A protective spray programme re-establishing copper cover is now high priority to protect young tissue and plants.

The KVH Psa-V Risk Model has predicted high risk periods for Psa-V over the last few weeks with these periods matching periods of rainfall.

Grower News
21 April 2016
Soil-applied Actigard - label claim lapses from May
21 April 2016
Actigard manufacturer Syngenta, will not be renewing the limited label claim on soil-applied Actigard from May 2016. Therefore, from May onwards soil-applied Actigard will be considered off-label...
Soil-applied Actigard - label claim lapses from May
21 April 2016

Actigard manufacturer Syngenta, will not be renewing the limited label claim on soil-applied Actigard from May 2016. Therefore, from May onwards soil-applied Actigard will be considered off-label use. However, it may still be approved by Zespri under Justified Approval (JA).

Foliar-applied Actigard is not affected by this change.

Please contact Sylvia Warren, Crop Protection Advisor on spraydiary@zespri.com for more information on a JA.

Biosecurity News
21 April 2016
Strengthened border biosecurity pays off over summer
21 April 2016
Record numbers of arriving passengers into NZ over the 2015/16 summer have kept border biosecurity defences busy over the season. However, strengthened biosecurity measures have stopped hitchhiking...
Strengthened border biosecurity pays off over summer
21 April 2016

Record numbers of arriving passengers into NZ over the 2015/16 summer have kept border biosecurity defences busy over the season.

However, strengthened biosecurity measures have stopped hitchhiking pests and diseases from entering New Zealand without affecting passenger processing time. In fact, processing time is down on last year, and compliance rates (the amount of times MPI correctly detects risk goods carried by passengers) are up at 99%.

Significantly, these detections included 14 fruit fly found on passengers—reflecting the biosecurity risk pressure at our borders.

Strengthened biosecurity measures include:

  • 90 new frontline officers and 24 new detector dog teams
  • Introduction of a mobile x-ray scanner to clear cruise ship passengers
  • Raising risk assessment levels
  • Heavy investment in public biosecurity awareness
  • A stricter approach with fining passengers who break the rules

Click here to read more on MPI’s website.

Biosecurity News
21 April 2016
Snapshot of summer biosecurity stats and facts
21 April 2016
MPI’s latest summer statistics are a good indication of the pressure New Zealand’s borders are facing. Here’s a snapshot of some interesting stats: 14—number of fruit...
Snapshot of summer biosecurity stats and facts
21 April 2016

MPI’s latest summer statistics are a good indication of the pressure New Zealand’s borders are facing. Here’s a snapshot of some interesting stats:

  • 14—number of fruit flies intercepted in fresh produce risk items between December 2015 and February 2016
  • 38—number of Brown Marmorated Stink Bugs (mostly dead) intercepted at the border
  • 4148—undeclared risk items seized from air passengers, an increase of 28% from last summer
  • 1109—risk items intercepted from cruise ship passengers, an increase of 84% from last summer
  • 3.4—average risk items per cruise ship detected by biosecurity detector dogs
  • 2288—infringement notices issued ($400 fine), an increase of 41% from last summer
  • 343—number of inspections on arriving yachts
  • 216—number of yachts carrying fruit fly risk items

Click here for full details.

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