Discussion

068 Serean L. Adams, Samantha L. Gale, Zoë Hilton, John F. Smith, H. Robin Tervit, David Burrit, Adam Rusk, Lindsay T. McGowan, Andrea C. Alfaro, Cawthron Institute, Nelson, New Zealand, University of Otago, Dunedin, New Zealand, Auckland University of Technology, Auckland, New Zealand, and AgResearch, Ruakura Research Centre, Hamilton, New Zealand.