**3. Role of strategic tillage in southern Australian agriculture**

In this section we focus on the role of ST in removing soil and agronomic constraints and providing additional benefits toward maintaining sustainable productivity in a broadacre cropping system. A cause-and-effect relationship between multiple interacting soil constraints (soil water repellence, compaction, acidity and sodicity) arises due to long-term farming practices with NT adoption by farmers and the reasons for generating a yield gap are presented in **Figure 1**. The role of ST in amelioration of these constraints such as water repellence, soil acidity and compaction will be discussed further in this chapter.
