Assessing Soil Indicator Practices: Determinants and Variations Among Australian Farmers – Journal article

Soil indicators play a crucial role in assessing soil performance and guiding sustainable land management practices by providing insights into soil health and quality. However, limited information exists on the types of soil indicators used by Australian farmers and their reasons for selecting these indicators across different agricultural enterprises. This study was conducted to address this knowledge gap by surveying Australian farmers from grain, cattle, and sheep enterprises. The survey examined farmers’ knowledge of fixed soil properties, the types of chemical, physical, biological and observational indicators used, and the reasons for their choice of indicators. The results revealed that grain farmers had the highest knowledge of fixed soil properties and conducted more frequent and diverse soil tests compared to cattle and sheep farmers. Chemical indicators, such as pH and available phosphorus, were the most used across all enterprises, while biological indicators remained least used due to complexity and cost. Observational assessments, including paddock walks and plant growth, were the most frequently used indicators. Farmers primarily chose indicators based on their relevance to production decisions and ease of assessment, with grain farmers more likely to follow agronomist recommendations and select indicators suited to their enterprise. The findings highlight a need for targeted education programs, simplified biological testing and enhanced integration of traditional and advanced analytical techniques to improve soil management practices in Australian agriculture.