Uptake and persistence of 1080 in watercress and puha

Abstract

Sodium fluoroacetate (Compound 1080) is a key tool in the control of possums, and the most extensively used vertebrate pesticide in New Zealand. The most common method of control using this pesticide is via aerial application of cereal or carrot baits containing 1080. Despite the efficiency of aerial 1080 application for reducing possum population numbers, support amongst Māori is mixed. The risk of secondary poisoning of people using kai resources has previously been identified as key research by the Animal Health Board (AHB), Environmental Risk Management Authority (ERMA) and Māori. During aerial application of 1080 baits, there is the possibility that 1080 may leach from baits and be taken up by nearby plants. This presentation is part of a research programme conducted to investigate the uptake and persistence of 1080 in watercress and puha.