Soil testing for crop nutrition (Western Region)
Published: 20 Jan 2014
Updated critical soil test values will help improve test interpretation to inform better fertiliser decisions.
- A range of soil test values used to determine if a nutrient is deficient or adequate is termed a critical range.
- Revised critical soil test values and ranges have been established for combinations of nutrients, crops and soil.
- A single database collated more than 1892 trials from Western Australia for different crops.
- Nutrient sufficiency is indicated if the test value is above the critical range.
- Where the soil test falls below the critical range there is likely to be a crop yield response from added nutrients.
- Critical soil test ranges have been established for 0 to 10cm and 0 to 30cm of soil.
- Soil sampling to greater depth is considered important for more mobile nutrients (N, K and S) as well as for pH and salinity.
- Use local data and support services to help integrate critical soil test data into profitable fertiliser decisions.
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GRDC Project Code UMU00030, DAW000222, DAW000223, DAN00165, DAN00166
Region West, North, South
Region: West; North; South
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