Ninety-two kiwifruit orchards have now been confirmed as having the vine killing disease PSA, marketer Zespri says.
That means 12 more have tested positive for the bacterial disease since last Friday.
Three-quarters of the affected blocks are in a 23km area south of Te Puke in the Bay of Plenty.
Zespri's grower services director Carol Ward says almost all the vines with PSA are still only showing signs of leaf spotting.
Severe symptoms have only been seen on about 5% of infected orchards.
Zespri is working with MAF Biosecurity to develop a process so orchards under restricted place notices could have them removed by the end of this week.