The Queensland Department of Primary Industry has published a report titled 'Soil health for vegetable production in Australia'. From the summary on the web page: "Specifically for vegetable agronomists, consultants and growers, this manual takes a holistic view of soil health, considering the interaction of physical, chemical and biological soil properties. The balance and stability of these components are what make a healthy soil." The report can be found at this URL: http://www.dpi.qld.gov.au/26_17025.htm