Kiwifruit Vine Health says it is disappointing but not surprising vines on a Coromandel orchard have been provisionally identified as having the bacterial disease PSA.
The agency says four vines of the new Gold 9 variety in the Whenuakite area appear to have PSA-V.
The discovery comes only a fortnight after the bacterial disease was confirmed for the first time in Waikato.
KVH chief executive Barry O'Neil says given that the orchard is relatively close to PSA-V infected areas of Bay of Plenty, the Coromandel region has been classified as high risk.
The four infected vines have been cut out and disposed of.
The agency has established a control zone 10km around the infected block and has met with the 18 growers who collectively have 100 hectares of kiwifruit inside the zone.
PSA-V has now been found on more than 1300 kiwifruit orchards in Bay of Plenty, Waikato, south Auckland and Coromandel.