15 Aug 2012

Vine canker hits green cultivars harder

11:19 am on 15 August 2012

Kiwifruit Vine Health executives say there are signs the bacterial disease PSA is start to have a greater impact on green kiwifruit orchards in Bay of Plenty.

Nearly 6500 hectares of kiwifruit have been confirmed as having the virulent PSA-V form of vine canker, but most of them are the main gold variety, Hort 16A, rather than green Hayward cultivars.

KVH chief executive Barry O'Neil says red ooze and lesions were found last year on a small number of male Hayward vines but there's been a substantial increase in the past few weeks.

Dr O'Neil says it's serious on some blocks, with more than half the male plants showing secondary symptoms of PSA-V.