A severe hailstorm has destroyed apple and kiwifruit crops in Tasman district. The hail hammered the area around Lower Moutere, Motueka and Riwaka, west of Nelson, for 20 minutes from 9.30pm Tuesday night, collapsing hail nets and blanketing the ground with hailstones.
There are also reports of hail events in other growing regions, including the Bay of Plenty today.
All growers with orchards affected by hail are advised to apply a Psa-V copper protective spray. Wounds created by the hail create an entry point for Psa-V.
Those lodging a claim must contact the Zespri contact centre as soon as possible after the event (it needs to be done within 72 hours), and don’t cut or thin the orchard until the assessor has been out and you know the status of your orchard.
Males are difficult to identify and the flowering period provides the best opportunity to distinguish between cultivars. Male cultivars vary in susceptibility to Psa-V. Therefore, the ability to identify different male varieties can assist Psa-V management activities.
Diseased males can impact future pollination requirements. More-tolerant male varieties are more likely to provide an ongoing source of pollen within the orchard.
To help growers identify between males, KVH has developed a simple guide including photos, descriptions and leaf characteristics of each variety.
Also, growers wanting to test their males to confirm identify are can contact Tree Lab in Rotorua who process male samples and send them offshore for DNA analysis.
Three recent reports of symptoms appearing to be Psa-V (red exudate) have received ‘Not Detected’ results following testing.
The samples from three different varieties in three different regions have been sent to MPI for further analysis. Testing is in progress. While no other strains of Psa have been identified so far, a fungi commonly associated with wounding has been identified on one sample.
We know wounds are a pathway for Psa-V to enter, and this could also be the case for other diseases. Therefore growers are advised to remain vigilant with monitoring and applying protectant sprays and to continue to protect vines by sealing any wounds.
KVH Chairman Peter Ombler, Chief Executive Barry O’Neil and Director Mike Chapman presented KVH’s proposed resolutions, including the levies and financials, to the NZKGI Forum members yesterday and received unanimous support.
Peter also thanked Mike Chapman and Paul Jones for their contribution and service to the KVH Board. Mike Chapman will continue on as KVH Board Secretary.
The KVH AGM is scheduled for 26 November 2014 starting at 2pm in Classic Flyers, Jean Batten Drive, Mount Maunganui. AGM papers and proposed resolutions have been sent to KVH members and are now available on the KVH website here.
All growers and industry participants are encouraged to attend the AGM. Please RSVP to firstname.lastname@example.org.
Zespri is holding a round of field days in November. A number of pruning specialists will be in attendance to discuss male management, and in particular, how to undertake the post-flowering prune while minimising Psa-V infection risk. Latest research findings on this topic will be discussed.
Zespri strongly encourages all pruning contractors and key staff to attend these field days and participate in the discussion. These will be held late in the day so as not to disrupt the working day. The field day will conclude with a BBQ.
Click here for the full schedule.
A study published this week found four species of fruit fly (Oriental Fruit Fly (OFF), Invasive Fruit Fly, Philippine Fruit Fly and Asian Papaya Fruit Fly), are in fact all the same species—Oriental Fruit Fly.
The implications of this study means the distribution and host range of the OFF is wider than previously thought, increasing the likelihood of an incursion by this species.
The OFF attacks a wider range of hosts than the Queensland and Mediterranean fruit flies and can damage fruit at an earlier stage than other species while the fruit is harder and greener.
Australia rank OFF as their major quarantine concern for plant industries with a total cost of establishment expected to be $1 billion in control and lost markets.
KVH consider OFF as one of three species of fruit fly (Mediterranean and Queensland fruit flies being the others) that together present the greatest biosecurity threat to the New Zealand kiwifruit industry. Should OFF establish in New Zealand the economic impact to the kiwifruit industry would primarily felt through market access restrictions by trading partners.
OFF is a target species of the fruit fly surveillance network in New Zealand, and a focus species of the Operational Agreement for readiness and response activities under GIA that KVH is preparing alongside MPI and other horticultural industries.