Our activities

A note on the biosecurity levy

Our Biosecurity (Readiness and Response—Summerfruit Levy) Order 2019 came into force on 1 November 2019. At the 2020 AGM summerfruit growers voted in favour of setting the biosecurity levy rate at 0.05%. This is the first time the biosecurity levy has been implemented and will allow Summerfruit NZ to collect the necessary funds to face any future biosecurity incursions affecting our industry. While we did have limited reserves available to cover biosecurity responses, unfortunately in the case of fruit fly, these responses have become increasingly frequent and can no longer be sustained in the same way.

Exotic pest incursions can disrupt orchard operations, lead to market access restrictions and impact on fruit production and quality. The best scenario is early detection which gives us the best chance of eradication. However, eradication is not always possible and being prepared to effectively manage a high impact exotic pest is important for production and export continuity.

This is the work that Summerfruit NZ supports as a partner to the GIA on behalf of growers. This work involve minimum commitments, which include participation on the decision making and sharing the cost of readiness and response activities with government and other industries.

In general terms, the biosecurity levy can be activated for any of the following three reasons:

  • in the event of a biosecurity response to meet our industry share for the cost of the response
  • to establish a biosecurity reserve fund
  • when multiple Operational Agreements are signed and additional funding is required to meet the industry’s share of readiness costs.

Any changes to the levy rate are to be discussed at an AGM. 


Biosecurity business pledge

Summerfruit NZ has taken the biosecurity business pledge under ‘This Is Us’, the biosecurity brand formed as part of the Biosecurity 2025 programme. The biosecurity pledge was launched on 31 October 2019 by the Hon Damien O’Connor, Minister for Biosecurity and MPI officials. 

Pledge signingUnder this pledge, Summerfruit NZ is committed to playing our part as a support organisation in the efforts to prevent pests and diseases from getting into New Zealand or helping to stop the spread if they arrive our country. Our pledge is to be an active part of New Zealand’s biosecurity team of all New Zealanders by integrating proactive biosecurity practices into our operations and supply chain. 

Photo: Biosecurity and export manager Juan Rosales signs the pledge on behalf of Summerfruit NZ while the Minister looks on.


Brown marmorated stink bug and spotted wing drosophila workshop

In the last week of May, Plant & Food Research hosted a meeting open to Hawke’s Bay apple, wine grape and summerfruit growers on two very important pests that challenge New Zealand’s border biosecurity systems. These pests are the brown marmorated stink bug (BMSB) and spotted wing drosophila (SWD).

Presenters included speakers with international experience in the management of these pests:
Dr Claudio Ioriatti from Italy and Dr David Bellamy from the USA – now based in New Zealand. Along with the international speakers there were also presentations from recognised specialists from PFR and MPI.

The meeting was an important opportunity to learn more about these biosecurity threats not currently present in New Zealand, how they are being managed overseas and what work is being done to minimise the impact these pests may pose on our horticultural industries.

Below is a summary of the main points from the meeting. 


Brown marmorated stink bug 

BMSB photo 2 MPI readiness for BMSB

  • Taking a seasonal approach to pre-border inspection.
  • 61 live BMSB have been found this season, often within luggage.
  • Two detector dogs currently with more being trained.
  • Traps are reported to have an attractant range radius of 124m or about four hectares.
  • Chemical control is difficult; only Bifenthrin is available which is a synthetic pyrethroid.
  • An operational plan has been developed should a BMSB population be found.

BMSB Council/Biosecurity management

  • Probably only one generation per year is likely, may be two in Northland and Tauranga.
  • There is a lot of research work in progress or completed that is now being co-ordinated.
  • Import permissions have been gained from EPA and MPI for the Samurai parasitic wasp. Note that only MPI can use this tool.
  • A highly-dosed insecticide impregnated ghost net can be used as a lure and kill trap or as an exclusion wall/net.

BMSB Chile experience

  • Has entered the country with non-organic items.
  • They are still attempting to control the population.
  • New Zealand and Chile are working together.


  • An app is being developed for smartphones to enable reporting of potential sightings.
  • Monitoring is possible via pheromone traps and beating traps.
  • BMSB produces an aggregation pheromone which could be used, but it is not effective as a ‘lure and kill’ trap. More work is being done.
  • More likely cheaper to attempt eradication than pay for long-term management of BMSB.

Possible controls

  • As BSBM migrates into orchards, boundaries can be treated with insecticide. Area wide treatments would be preferable.
  • Insect proof netting is possible with 80-90% effectiveness.
  • Is there a natural or importable parasitoid?
  • Considering sterile insect technique (SIT).
  • Kamikaze wasp importation being readied if an incursion were to occur. 


Spotted wing drosophila

SWD photo

  • All production in infected counties is now in cages.
  • The impact of this pest on susceptible crops is worse than that for BSBM.
  • Spinosad (eg Success) is the only known chemical option. This is registered for summerfruit.

SWD experience

  • Eggs are laid in ripe fruit, with up to 13 overlapping generations per year. Population can double every four days.
  • Broad host range, different fruit have varying acceptability to SWD. Peach fluff is a barrier. Raspberry seems very desirable.
  • Damaged fruit is more accessible to SWD.
  • Cherry is susceptible once it starts to colour.
  • Care should be taken when changing to a harsher chemical control environment, as that may well be applications every 5-10 days with older style broad spectrum chemistry.
  • Monitor and destroy boundary hosts.
  • Lure and kill traps are being developed. Current traps can be less attractive than the crop!
  • SWD numbers explode once it is established.
  • In Chile there is trapping, looking at SIT and biological control.

After the meeting, Richard Mill and Juan Rosales from Summerfruit NZ were invited to participate in a workshop to learn about industry views on the matter and the work industry bodies are doing in preparation for a possible incursion of any of these pests. 


Further information

More information can be found on the Summerfruit NZ website under Biosecurity. 

Download our fact sheet on BMSB here.

Download our fact sheet on SWD here.


Samurai wasp EPA application

The Brown Marmorated Stink Bug (BMSB) is one the biggest biosecurity threats facing New Zealand and is frequently intercepted at our borders. It has the potential to cause significant economic damage to the horticulture industry and to home owners due to its invasive nature.

The BMSB Council made an application to the Environmental Protection Authority (EPA) to release the Samurai wasp to help combat a BMSB incursion should one be found in New Zealand.

Following approval from the EPA, the Samurai wasp (Trissolcus japonicus) can now be used to fight BMSB in the event of an incursion. 

The BMSB represents one of the highest risk biosecurity threats to New Zealand. Several industry groups, including Summerfruit NZ, made an application to introduce the Samurai wasp as a biocontrol agent for this pest and a decision on this request was reached late August 2018. According to the EPA’s decision, the Samurai wasp may only be released in New Zealand after a stink bug invasion has been detected, and only at the location of the incursion. This is an extremely important achievement for horticultural industries and will be a very important tool in preparation for the effective and sustainable management of a potential BMSB incursion.

Samurai wasp with BMSB eggs

Further information

Download the Samurai wasp Q&A here.

Read When twenty-six thousand stink bugs invade your home by Kathryn Schulz, published 12 March 2018, The New Yorker.

Watch BMSB infestation on house in Italy.

Download our fact sheet on BMSB here.

Read MPI's factsheet on BMSB.