Project Delivery: Wheatbelt NRM, Individual Landholder
Contact: Lizzie von Perger
Ph: 9670 3106
Website: Wheatbelt NRM Website
Start Date: 2015 End Date: 2016
Site ID: SA00530SA2
Area (Ha): 610(Ha)
This project aims to demonstrate the benefits of soil testing to depth (up to 30 cm) and therefore increase wider adoption of the practice. The soil test results will be used to determine the best management practices to improve the soil pH and health and ultimately crop yields.
Soil samples will be collected from the depths 0-10 cm, 10-20 cm and 20-30 cm. pH and a comprehensive nutrient analysis will be completed for the topsoil samples (0-10 cm) and pH analysed for the subsoil samples (10-20 cm & 20-30 cm). The soil test results will be used to determine best soil management practices in order to increase efficiency and productivity.
The soil test results showed that acidification (low pH) was a significant issue in the subsoil of the focus paddock and quite likely to be limiting crop productivity. pH of the topsoil was good. This highlights the importance of soil testing to depth. Most Wheatbelt growers test the topsoil, however, acidity in the subsoil in many cases is of greater concern.
The grower now has more information enabling him to take a more targeted approach to lime applications and liming rates have been increased to 2 t/ha with 300 kg/ha gypsum. The grower is also considering the benefits of incorporating lime to depth either by ploughing or deep ripping.