About Us | Links | Contact Us

• Home
• Articles & Presentations
• Fact Sheets
• Calculators

Fact Sheets - Soil Acidity

Soil acidity is a major environmental and economic concern. Approximately 50% of Australian agricultural land or 50 million ha have surface pH values less than or equal to 5.5 which is below the optimal level to prevent subsoil acidification. If untreated, acidity will become a problem in the subsurface soils, which are more difficult and expensive to ameliorate. Subsurface acidity is already a major problem for large areas of Western Australia and New South Wales. It is estimated that 12 to 24 million ha is extremely to highly acidic with pH values less than or equal to 4.8.