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	Podcast:		RNZ: Our Changing World
	Episode:		Keeping the South Island Psa-V free
	Category:		Science & Medicine
	Duration:		00:26:32
	Publish Date:		2026-04-20 17:00:00
	Description:		In 2010 the Psa-V bacterial disease was found in a Bay of Plenty kiwifruit orchard. This was the beginning of a terrible ordeal for many kiwifruit growers. It devastated crops, resulting in the loss of hundreds of jobs, and hundreds of millions of dollars. But though it spread to some other areas in the North Island, it never made it across the Cook Strait. Claire Concannon learns about the science behind keeping this microbe out of Te Waipounamu. Sign up to the Our Changing World monthly newsletter for episode backstories, science analysis and more. Learn more: The Plant and Food Research (today the Bioeconomy Science Institute) team who worked on science to help with the kiwifruit Psa crisis won the Prime Minister’s Science Prize in 2017. In 2012 Alison Ballance reported on the hunt for resistance genes so kiwifruit plants could be more resilient in the face of this bacteria. As In-Depth reporter Farah Hancock detailed earlier this year, 95% of the kiwifruit grown here are actually exported - an earner of $4.5 billion in 2025. Guests: Falk Kalamorz Rebecca Manners, Bioeconomy Science Institute Dr Ed Morgan, Bioeconomy Science Institute Leanne Stewart, Kiwifruit Vine Health Go to this episode on rnz.co.nz for more details
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