CRC for Sheep Industry Innovation and the University of New England, Armidale, NSW 1 Department of Agriculture and Food of Western Australia, South Perth, Western Australia, 6151, Australia Institute of Agriculture, University of Western Australia, Crawley, Western Australia, 6009, Australia School of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, Western Australia 6150, Austr...

a Centre for Cropping Systems, Department of Agriculture and Food, Western Australia, PO Box 483, Northam, WA 6401, Australia; b Rothamsted Research, Harpenden, Hertfordshire, AL5 2QJ, UK; c UMR d’Agronomie INRA/INA P-G, BP 1, 78850 Thiverval-Grignon, France; d Department of Agriculture and Food, Western Australia, Locked Bag 4, Bentley Delivery Centre, WA 6983, Australia; e School of Plant Bio...

John Karlsson is a researcher and farmer who has been working on a variety of sheep selection and resistance to parasites for more than 30 years. He is a Senior Veterinary Officer at the Department of Agriculture and Food Western Australia (DAFWA). At DAFWA he has worked on regulatory disease management programmes and providing general advice to livestock farmers since 1978. Al Karlsson is a Zo...

ARC Centre of Excellence in Plant Energy Biology, Faculty of Science, Bayliss Building M316, The University of Western Australia, 35 Stirling Highway, Crawley 6009, Western Australia, Australia (K.B., S.H., O.V.A., A.H.M.); Commonwealth Scientific and Industrial Research Organisation (CSIRO), Agriculture and Food, Wembley, Washington 6913, Australia (L.F.T., H.C., K.B.S.); and University of Wes...

1Department of Horticultural Engineering, Leibniz Institute for Agricultural Engineering (ATB), Potsdam, Germany 2Agro-polymer Engineering and Emerging Technologies, French National Institute for Agricultural Research (INRA), Montpellier, France 3Postharvest Technology Research Laboratory, Faculty of AgriSciences, Stellenbosch University, Stellenbosch, South Africa 4Curtin Horticulture Research...