"In our view, a strong precautionary approach to GMOs - or even better, outright prohibition - is desirable to prevent potentially enormous costs falling on ratepayers from damage or unforeseen adverse effects from GE experiments or release of GE organisms," he said.
Northland Regional Council placed precautionary provisions in the Regional Policy Statement after identifying GMOs as a significant issue for Northland ratepayers.
Councils, iwi and other concerned groups have voiced concern about gaps in the Hazardous Substances and New Organisms (HSNO) Act, including a lack of liability if there were unintended or unforseen adverse impacts from GMOs in farming and other industries.
"We support the right of local bodies to manage any potential use of GMOs in their area, using the RMA.
"We applaud the efforts of various New Zealand councils to put in place a much-needed additional tier of local protection against the risks of outdoor use of GMOs."
Mr Robinson said potential accidental damage could include transgenic contamination of soil and waterways, the emergence of herbicide resistant super weeds, and contamination of existing GE-free primary producers.
There was also potential for economic loss to regions marketing products and tourism under New Zealand's clean, green brand.