A new technology helping fight against a bee-killing disease is a "massive breakthrough", an Otago apiarist says.
New Zealand Alpine Honey owner and Project CleanHive chairman Peter Ward, of Hawea, said he ran about 5000 hives across Otago, Southland and the West Coast.
The operation was one of the biggest in the South Island.
He had been beekeeping for nearly 45 years and the highly contagious American Foulbrood disease was a "constant concern".
Although the Government approved a strategy to eliminate the disease more than 20 years ago, there had been "no real gain" in stopping its spread.