The Kiwifruit Vine Health organisation is concerned that some growers are becoming complacent about the vine killing disease PSA, and aren't reporting their blocks may be infected.
In the past week, 35 orchards have been identified as having the virulent form of the disease, bringing the total number in Bay of Plenty, Coromandel, Waikato and the Franklin district to 1369.
But KVH chief executive Barry O'Neil says the organisation can't be sure that in heavily infected areas, its figures are accurate.
He says it is working with growers post-harvest to clarify the figures.
Mr O'Neil says he believes growers are resigned to the fact they have PSA, and therefore the urgency in reporting is not the same where PSA is at a much lower level.
But he says it is very important that robust monitoring and reporting is maintained so the impacts of the disease can be collectively managed.
"Under the new pest management plan, we're proposing that there be three monitoring and reporting rounds per year, which I believe will improve the situation."
He says his organisation is working with packhouses as well as growers over PSA.
Mr O'Neil says growers should contact Kiwifruit Vine Health directly or their packhouse if they see PSA-V-like symptoms in their orchards.
