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Grower News
8 September 2015
Psa-V spring update meeting
8 September 2015
More than 100 growers attended yesterday’s Psa-V spring update meeting in Te Puke. Click here to watch a video of the meeting in including the presentations. Key messages from for the...
Psa-V spring update meeting
8 September 2015

More than 100 growers attended yesterday’s Psa-V spring update meeting in Te Puke.

Click here to watch a video of the meeting in including the presentations.

Key messages from for the upcoming season:

  • Signs of Psa-V are appearing in all affected regions and in all varieties - a colder, wetter autumn and winter is a contributor.
  • El Nino weather system has established in the Pacific and likely to continue with potential for a dry summer.
  • Likely to experience a wetter, windier spring until December.
  • Product rates and use conditions are confirmed in the latest Psa-V Seasonal Management Guide now available on the KVH website.
  • Industry must demonstrate it is using a combination of control practices – protective spray programmes and orchard cultural practices.
  • Bactericide products, KeyStrepto™ and Kasumin® are available for the upcoming season with strict use conditions, including the requirement to complete an Orchard Psa IPM Strategy (OPIS) document and submit to Zespri by 1 October 2015. Click here for further information.
  • Streptomycin resistance and copper tolerance is a focus this season – growers and contractors should be using label rates to help avoid resistance and tolerance developing. See KVH Best Practice Advice: Management to limit resistance to Psa control products on the KVH website.

Growers were also presented with a technical update on streptomycin resistance and management of bud-rot in green varieties through a 30-day pre-flowering girdle.

Key messages about pre-flowering girdling:

  • Pre-flower girdles can aid in the control of bud rot in green varieties
  • Apply 30 days before flowering for Hayward and Green14
  • Single blade knife girdles and half girdles don’t work
  • Girdles need to be done to correct depth
  • Use as part of an integrated Psa control programme

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