A survey has found traces of glyphosate in one-in-five honey samples, which beekeepers say presents a tricky situation.

The Ministry for Primary Industries found low levels of the chemical in twenty percent of samples from around the country, but say it is still safe to eat.

Unique Manuka Factor Honey Association general manager John Rawcliffe told Mike Hosking it is not a surprise to the industry.

"The industry through the national body and the ministry has been working constructively with this issue for a large number of years. Has helped with the testing and been advising beekeepers on their practice."

Mr Rawcliffe says while they can not control the bees, they are working to reduce those figures.

He says they can monitor where the bees are located and how they manage weeds around the hive.

Glyphosate is a recognised probable carcinogenic, and is the active ingredient in the weed-killer Round Up.