Kiwifruit trunks make great firewood, but growers and orchard managers are reminded of movement control rules for all kiwifruit plant material moving off an orchard. This includes kiwifruit trunks used as firewood.
KVH permission is required if kiwifruit firewood is moved from a Psa-V positive orchard. The only circumstance under which a permission may be given is if the firewood is moved to a location within the same Recovery region. The firewood must be covered in transit.
Moving kiwifruit firewood from a Psa-V positive orchard to a location in a different region, is prohibited. The reason for this rule is to restrict movement of kiwifruit plant material across regions and reduce the risk of resistant bacteria or other pathogens or pests being moved significant distances. KVH wants consistency in managing risk associated with the movement of all plant material.
The KVH Protocol for movement of kiwifruit firewood can be viewed here.
The rule of thumb is to dispose of all kiwifruit plant material on the property of origin using approved disposal methods. These include mulching, burial or burning. Further information can be found in the KVH Protocol for disposal methods, which can be viewed here.
Do not throw the trunks over a bank as they are likely to regrow and cost the landowner to control as wild kiwifruit.
Growers and contractors are reminded that prior to any movement of orchard machinery they should refer to the relevant KVH Protocol, to confirm whether permission from KVH is required. The need for permission is dependent on the regional classification of where you are moving the machinery from or to. This includes movement of tractors from a machinery sales yard.
Click here to view the KVH Protocol for orchard machinery and infrastructure.
On 1 October 2016 new conditions around buying and selling kiwifruit plants will come into effect when the Kiwifruit Plant Certification Scheme (KPCS) becomes mandatory.
This means only KPCS-certified kiwifruit plants may be bought or sold after this date. However, growers will still be able to ‘grow for their own use’ up to 1000 kiwifruit plants for movement between their own properties within the same Psa-V region.
In the March Kiwiflier growers will have received an information sheet about the KPCS, outlining their options and requirements from 1 October – click here for the online version.
It is important growers are not only aware of their options from 1 October, but they also need to order kiwifruit plants for the upcoming season well in advance (at least one year) to enable nurseries to anticipate demand.
The KPCS has been in place for almost two years and some nurseries have already joined the Scheme and are producing certified plants in several regions – click here for the list of these nurseries.
An incoming passenger from Hong Kong was refused entry into New Zealand by border officials after a biosecurity detector dog sniffed out lemons concealed in her pants at Auckland Airport. The passenger was returned to Hong Kong on the next available flight.
KVH strongly supports the action taken by Immigration NZ and MPI which sends a firm message to those who deliberately smuggle high-risk food items into NZ.
Lemons from offshore can harbour unwanted pests like fruit fly, which would have a devastating impact on New Zealand’s horticulture industries if it were to enter and establish here.
Read MPI’s press release here.
MPI has released a consultation package asking industry for comments on its proposed approach for determining a fruit fly export restriction zone (ERZ) during an incursion. This consultation package is comprised of the following:
KVH is looking for an Independent Director with experience in biosecurity to make a significant contribution to the strategic approach to biosecurity risk management for the kiwifruit industry to join the KVH Board.
Click here for the job description.
If you are interested in this position, please send your expression of interest with details of your relevant experience to:
PO Box 4246
Mt Maunganui South
Or email to: Jacqui.email@example.com
Online auction site Trade Me, has now implemented the ban on kiwifruit plant material, following a request from KVH. This includes the sale of kiwifruit plants, budwood, pollen and firewood through their site. Click here to view kiwifruit plant material listed on their banned/restricted items list.
Weather warnings have been issued over the Easter weekend and the KVH Risk Model is showing high-risk weather for Psa in many regions including Te Puke, Kerikeri and Whangarei.
Heavy rain and strong winds can cause damage to vines, increasing risk of Psa-V infection and spread.
Growers with orchards impacted by this weather are recommended to apply a copper spray immediately following the weather event and monitor at-risk areas of the orchard.
Preliminary results from the latest KVH round of the ongoing Psa resistance and tolerance monitoring programme show a significant increase in the number of samples with a degree of tolerance to copper.
The February/March programme tested 237 samples from 99 KIPNs. Of these, forty-two samples showed low levels of tolerance to copper; and 23 samples showed medium levels of tolerance to copper. These samples were from 56 KPINs. The level of tolerance identified is still below the concentration of copper in a spray tank when applied at recommended rates, but the development is concerning.
The orchards are spread across the growing regions with the majority of orchards identified in Te Puke. The other areas are Whakatane, Opotiki, Poverty Bay, Coromandel, and Kerikeri.
KVH is contacting the owners of the orchards showing medium levels of copper tolerance to review what is happening on orchard and attempt to better understand the potential implications on Psa control. Orchards where copper tolerance has been identified are also required to manage risk items off-orchard to reduce the risk of transferring the bacteria to other locations.
All growers are encouraged to ensure copper is applied at label rates using high enough water rates to ensure complete coverage of the canopy and to follow best practice Psa management advice. This includes a comprehensive spray programme of five copper applications at full winter rates, starting immediately post-harvest and through dormancy. It’s also important to remove infected material from orchards, maintain good hygiene between vines and alternate spray protection products.
In addition to the resistance and tolerance monitoring work being carried out for KVH by Hills Laboratory, Otago University, Massey University and Plant and Food Research are undertaking studies looking at the genome sequence of Psa and how the bacteria is evolving on orchards. All these researchers have identified the presence of additional genes that they believe are associated with copper resistance in Psa. These samples were from a selection of orchards in the Te Puke region. It is important to note these research institutes have each used a different testing methodology to determine the level of copper required to inhibit the bacterial growth and as such, we still don’t know if this development is a significant finding.
KVH will host a collaborative science workshop in May for scientists from Otago University, Massey University, Plant and Food Research and other experts to discuss the findings to date and gain a better understanding of the situation. The objectives include agreeing a standardised testing methodology for resistance/tolerance and steps on how we best manage the increasing risk of Psa evolving and developing a resistance to copper.
Orchards that have been found to have a copper/streptomycin tolerance or resistance should refer to KVH Protocol: Resistance/tolerance to Psa control products.
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 firstname.lastname@example.org.
This week KVH met with North West Auckland growers to discuss autumn Psa-V protection and to reinforce the importance of orchard biosecurity and hygiene through the harvest and winter period.
North West Auckland now has ‘containment’ regional status with three of their 23 KPINs confirmed Psa-V positive.
Infected material was removed from the two Psa-V positive Gold3 blocks through to early December. However, no new symptoms have been seen in recent weeks.
Hayward vines reported Psa-V positive during the November KVH monitoring round, have found no further symptoms since cut-out of the two original symptomatic vines.
Overall growers in the North-West Auckland region have done an excellent job with biosecurity and managing the positive orchards to reduce disease spread.
KVH has facilitated the removal of a one hectare abandoned kiwifruit orchard in the North-West Auckland region. The orchard was recorded as unmanaged three years ago but was subsequently pruned and sprayed to meet KVH requirements.
The property was recently sold and after considering all options, the new owners agreed to removal over management. The orchard was low-lying and a marginal economic proposition for continued Hayward production. Local postharvest companies were no longer interested in any possible lease.
A North-Auckland based contractor has completed the removal. Piled vines will be burnt once they have dried out and fruit picking is completed on neighbouring orchards.
KVH would like to thank the land owner and all involved in achieving a successful outcome.
If growers know of any unmanaged or abandoned kiwifruit orchards, please alert KVH with location and orchard status details – email email@example.com.
Research clearly shows that as we move into autumn and temperatures drop and rainfall increases, Psa-V inoculum levels start to rise.
With the upcoming harvest we will also see a big increase in movement of people and machinery between orchards.
Growers and contractors are reminded to make sure good orchard hygiene practices are in place; not just to reduce the risk of spreading Psa-V through machinery, tools, people and vehicles, but also to reduce the risk of spreading streptomycin-resistant and copper-tolerant/resistant Psa-V that may be present but undetected.
As previously reported, streptomycin resistance and copper tolerance has been found on a small number of orchards but may well be present on other orchards. Where it has been identified, orchards are being managed to ensure best practice is being carried out. This includes heightened hygiene measures, particularly during harvest, to reduce the spread to other orchards.
Best practice hygiene
Click here for KVH Best Practice: Orchard Hygiene