Orchards in Paengaroa and Pongakawa South are among five sites cleared of having Psa after initially testing positive.
Other orchards to be cleared, all outside the existing Psa-V priority zone, were in Gisborne and Nuhaka.
Kiwifruit Vine Health (KVH) lifted the provisional Psa-V status of the orchards as they showed
no obvious signs of the disease and follow-up tests failed to detect it.
The five orchards will remain under high surveillance by KVH.
KVH general manager John Burke said the orchards initially tested positive for Psa-V late last month using a quick detection test developed by Te Puke laboratory VLS, which is a division of Seeka Kiwifruit Industries.
But further testing failed to detect evidence of the disease.
Mr Burke said the differences in results could be explained by a number of factors including sampling, season, environmental conditions and treatments.
"The VLS speed test offers a rapid turn-around time in providing results, usually around one day which is much faster than the original 'haplotype' test, which takes around two weeks. This is because the original test needs to grow the bacteria in the laboratory," he said.
"Unlike the original test, the VLS test does not undertake genetic sequencing, which is what provides us with greater confidence of Psa-V detection."
Mr Burke said KVH would continue to use the VLS test.If a positive result for Psa-V is found out of the priority zone, the original testing method will be used to confirm the result.
The $1.5 billion kiwifruit industry is under threat from the vine-killing bacteria Psa - Pseudomonas syringae pv actinidiae.
Last week scientists revealed a potential breakthrough in the fight against the disease.
Research into a high-temperature treatment that can kill Psa without affecting the pollen could help growers ahead of artificial pollination beginning in October, kiwifruit body Zespri said.
Other work was being done to discover a way of killing Psa in the vine without destroying the plant, but Plant & Food Research has confirmed that Psa can be killed without destroying the pollen it has attached to.
The fine details are not being revealed as it is commercially sensitive, but involves heating followed by freezing the dried pollen.
Plant & Food Research scientists believe the heat treatment was the most promising.
