Biosecurity New Zealand says it is to tighten up surveillance of genetically modified crop trials.
A trial carried out by the Institute of Plant and Food Research at Lincoln near Christchurch was closed down after it was found one of the GM kale plants had been allowed to regrow and flower outside.
Biosecurity New Zealand says the chance of cross pollination through either wind or bees is very low.
The agencies principal adviser Doug Lush says the investigation did show a series of worrying lapses in the conduct of the plant and food trial.
He says as a consequence the audit for any future trials at the site will be significantly tightened.
Copyright © 2009 Radio New Zealand
