The public is being reassured they're not at risk from antibiotics used on some kiwifruit vines.
Kiwifruit Growers Incorporated says fewer than 50 growers put antibiotics into their vines, out of more than 2500 throughout the country.
It's illegal to inject vines, in case the use of streptomycin will get into the food chain and eventually cause humans to form immunity to it - but growers are getting increasingly desperate in their battle against the psa virus.
The antibiotic has however been used for half a century in spray form.
Kiwifruit Growers President Neil Trebilco says a decision was made in early March for every grower's fruit to be tested for any residues.
"We can assure the markets and anybody who's eating kiwifruit that it's absolutely safe to eat them, there will be no antibiotic or other residues that makes it unsafe to eat."