A police spokesman said today that the Tasman district commander had this year decided to use a "targeted, focused deployment model that did not include an aerial recovery phase".
He said police used various tools and tactics to detect and recover cannabis at all times, not just during the annual cannabis recovery operation.
"In some situations helicopters are used, but this is not necessarily appropriate in all circumstances."
Police made operational decisions about the best use of resources on a case-by-case basis, he said.
The spokesman confirmed that some of the plants recovered were on Department of Conservation (DOC) land. Over 400 plants were discovered at one public plot.
This year's operation began two weeks ago. Thirty police staff have been involved.
It included visits to 50 sites on public land and a dozen visits to urban and rural addresses.
The spokesman said police were yet to conclude the investigation.
"Physical and photographed evidence is still being catalogued. Those details will be presented in court once the prosecution files are completed."
- Westport News