This decision tree has been designed with the purpose of application with the Australian Soil Classification, which was created by R.F.Isbell. This work takes no credit for the creation of the classification system, it is simply a tool to be used to aid the process of classification. I recommend that any user has access to a copy of the book. Click here to order one online. I am using the 1st addition.
How the use the tool?
Read the questions in italics, than answer yes or no for the soil you are classifying.
Keep answering the questions until you get to a bold soil sub-order, this is the soil sub-order of the soil you are classifying.
Decision Tree Tool
Is the soil in an intertidal zone (i.e. experiences daily high and low tides)?
Yes, than it is Intertidal
No,
Is the soil salt crusted and/or experiences seasonal flooding?
Yes, than it is Supratidal
No,
Is the soil seasonally flooded with freshwater and occasionally flooded with saline water when extreme weather events occur?
Yes, than it is Extratidal
No,
Is the soil in coastal salines or continental playas?
Yes, than it is Hypersalic
Does the soil have a saline water table?
Yes, than it is Salic
Is a major part of the solum mottled?
Yes, than it is Redoxic
No, than it is Oxyaquic
SoilSarah 