The potato psyllid is a tiny insect that is wreaking havoc in New Zealand’s potato sector. It has cost the industry $120 million since it was first discovered in 2006, last year alone the figure was  $28 million. Anxious growers have been at meetings throughout New Zealand this week, organised by industry body, Potatoes New Zealand. Reporter Benedict Collins was at one of the meetings in Pukekohe, one of the worst affected areas...