1. School of Agriculture and FoodFaculty of Veterinary and Agricultural SciencesThe Univ. of MelbourneParkvilleVIC3010Australia
2. Soil and Allied Services Pty. Ltd.1500 Warragul Rd.StrzeleckiVIC3950Australia
3. AgResearch, Lincoln Science CentrePrivate Bag 4749Christchurch 8140New Zealand
4. Faculty of Agriculture and Life Sciences, P.O. Box 85084Lincoln Univ.Christchurch 7647New Zealand
5. School of Agriculture Food and WineWaite Research InstituteThe Univ. of AdelaidePMB 1Glen OsmondSA5064Australia