As part of the ongoing Streptomycin resistance and copper tolerance testing programme, KVH commissioned two rounds of testing over spring 2015.
The first round of testing was carried out on the seven orchards where resistance was identified in autumn of 2015.
Up to 30 symptomatic samples from each orchard where collected and forwarded to Dnature for resistance testing using a new PCR test method. The test results confirmed Streptomycin resistance was still present on six of the seven orchards tested. Of the six orchards, the percentage of positive Psa results showing resistances was below 5% on three orchards; between 20% and 25% on one orchard and above 25% on the other orchard.
KVH continues to liaise with these growers over how to best minimise the risk of resistance spreading throughout the orchard and onto neighbouring properties.
As part of the wider resistance monitoring programme, a total of 276 samples from 99 KPINs were collected from across the country in November and December and forwarded to Hills laboratory for streptomycin resistance and copper tolerance testing. No copper tolerance was identified in any of the samples. Three KPINs in the Edgecumbe/Whakatane area were confirmed as positive for Streptomycin resistant Psa.
KVH has met with the owners of the three orchards and will be working with these growers to minimise the spread of streptomycin resistant Psa. The next round of resistance testing will be undertaken in February.
NZ Kiwiberry Growers Inc (NZKBG) and KVH have jointly submitted an application to the Minister for Primary Industries for NZ Kiwiberry Growers to join Government Industry Agreements (GIA) and be represented by KVH in GIA decision making.
New Zealand kiwiberry growers voted in support of this arrangement and how they will fund their GIA commitments in 2014.
The new arrangement is fully supported by both KVH and NZKBG, and recognises both the commonality of biosecurity issues (across Actinidia spp.) and close existing relationships and association between kiwiberry and kiwifruit growers and industries.
Imported Italian kiwifruit is a potential pathway for unwanted pest White Peach Scale (WPS) to enter New Zealand. WPS could easily adapt to New Zealand conditions and is therefore considered a serious threat to our kiwifruit industry.
In the coming weeks KVH will be contacting all kiwifruit importers to reinforce the protocols for reducing risk of WPS, including systems for fruit disposal.
This also provides a great opportunity for KVH to raise awareness amongst staff of other unwanted pests and diseases such as Brown Marmorated Stink Bug, including what to look for, when the high-risk seasons are and what to do should they suspect it.
Growers can protect their own orchards by ensuring contractors do not bring imported fruit onto their property as discarded fruit and skins could contain the pest and establish on vines.
A fact sheet on WPS can be found here, if you think you have seen this pest please report to MPI on 0800 88 99 66 and inform KVH also.
Summer is a high-risk season for fruit flies entering New Zealand’s borders and KVH is calling for everyone travelling internationally at this time of year to be vigilant when returning to New Zealand, in particular if returning from the east coast of Australia.
The last two years have seen fruit flies detected this side of the border during the summer months, triggering significant government and industry responses (Whangarei in January and April 2014; and Auckland in February 2015).
Everyone in the kiwifruit industry has a responsibility to manage biosecurity risks when travelling. Always declare or dispose of biosecurity risk goods such as food when returning.
Click here for KVH’s best practice for kiwifruit growers to help reduce biosecurity risk when returning from an offshore orchard or farm; and also what they can expect through border control when arriving back in New Zealand.